Observaciones 2013

Año 2013 – Observaciones Visuales y CCD de Cometas
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C/2013 V3 (Nevski)
2013 Dec. 16.16 UT: m1=[10.0, NEGATIVE; 20×80 B; Marek Biely (Brno, Czech Republic) [Fainter than 10.0 mag.]
2013 Dec. 15.21 UT: m1=9.6, Dia.=5, DC=2; 20cm STC (50x); Carlos Labordena (Castellón, España)
2013 Dec. 12.29 UT: m1=9.8, Dia.=5′, DC=2; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2013 Dec. 10.05 UT: m1=11.2, Dia.=5.5′, DC=1/; 25×100 B; Jakub Cerny (España)
2013 Dec. 09.06 UT: m1=11.1, Dia.=5.0′, DC=2; 25×100 B; Jakub Cerny (España)
2013 Dec. 08.19 UT: m1=10.7, Dia.=6.4′, DC=2/; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.70 UT: m1=10.9, Dia.=3.4’, DC=1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with very slight brightening to centre, no tail]
2013 Dec. 07.18 UT: m1=9.5 Dia.=5′, DC=2; 20cm SCT (50x); Carlos Labordena (España)
2013 Dec. 07.15 UT: m1=10.2, Dia.=4.5′, DC=2; 25 cm L (77x); Sandor Szabo (Hungary)
2013 Dec. 07.15 UT: m1=[9.7, NEGATIVE; 20×80 B; Marek Biely (Brno, Czech Republic) [Fainter than 9.7 mag. Heavy snow clouds interference]
2013 Dec. 07.07 UT: m1=10.4, Dia.=4.7′, DC=2; 25×100 B; Jakub Cerny (España)
2013 Dec. 06.06 UT: m1=10.0, Dia.=6.6′, DC=2, 25×100 B; Jakub Cerny (España)
2013 Dec. 05.69 UT: m1=10.4, Dia.=4.7’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Observation difficult due to background star in coma. No tail]
2013 Dec. 05.04 UT: m1=10.1, Dia.=9.6′, DC=2, 25×100 B; Jakub Cerny (España)
2013 Dec. 05.03 UT: m1=9.1, Dia.=6′, DC=2/; 25×100 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España)
2013 Dec. 03.08 UT: m1=10.0, Dia.=5′, DC=2; 25×100 B; Martin Lehky (Czech Republic)
2013 Dec. 02.87 UT: m1=10.8, Dia.=4′, DC=3; 20cm reflector; Man-To Hui (Nhut Thong Pau, Canton, China) [city lights]
2013 Dec. 02.16 UT: m1=11.1, Dia.=4′, DC=3; 32cm L f:5 (48x); Uwe Pilz (Leipzig, Germany)
2013 Dec. 01.16 UT: m1=11.1, Dia.=4′, DC=3; 32cm L f:5 (48x); Uwe Pilz (Leipzig, Germany)
2013 Nov. 25.14 UT: m1=9.5, Dia.=5.5′, DC=3; 20×80 B; Marek Biely (Brno, Czech Republic) [Hard to see this comet. I utilized the opportunity when one of the clouds covered the Moon. Although the comet is near by the Moon in the last quarter, the cloud covered only the Moon. The comet is very faint, near by the limits of my binocular. Heavy snow clouds and moonlight interference]
2013 Nov. 16.84 UT: m1=10.1, Dia.=2.7′, DC=3; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 15.29 UT: m1=8.8, Dia.=8′, DC=1; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 15.28 UT: m1=10.9, Dia.=4′, DC=5/; 27cm L F/5; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 12.15 UT: m1=10.1, Dia.=3.8′, DC=4; 42cm L f:5 (66x); Martin Lehky (Czech Republic)
2013 Nov. 14.70 UT: m1=8.9, Dia.=6.5’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma diffuse, no tail]
2013 Nov. 14.51 UT: m1=8.6, Dia.=7′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 14.29 UT: m1=11.0, Dia.=3′, DC=6; 27cm L F/5; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 14.18 UT: m1=8.7, Dia.=8′, DC=3; 25×100 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [Claramente más brillante que lo previsto. El cometa muestra un mayor diámetro de coma, y con ello se deduce una magnitud m1 bastante más brillante que la obtenida en la observación previa de Nov. 11.21]
2013 Nov. 13.73 UT: m1=8.9, Dia.=6′, DC=4; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia) [Much brighter than anticipated. Comet is clearly in outburst since discovery]
2013 Nov. 13.71 UT: m1=9.5, Dia.=8; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Strongly enhanced through Swan band filter]
2013 Nov. 13.70 UT: m1=9.0, Dia.=5’, DC=2/3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma very large and diffuse, easy to locate. Glimpsed in 7×50 B’s.]
2013 Nov. 13.68 UT: m1=9.0, Dia.=5.7’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very large and diffuse,  enhances strongly using Swan Band filter]
2013 Nov. 13.29 UT: m1=11.0, Dia.=3′, DC=2/; 22cm L (120x); Marco Goiato (Araçatuba, Brasil)
2013 Nov. 13.26 UT: m1=11.0, Dia.=1′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Nov. 12.69 UT: m1=9.7, Dia.=2’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Star in coma, no tail, coma very diffuse, enhances strongly using Swan Band filter]
2013 Nov. 11.21 UT: m1=10.9, Dia.=4′, DC=2/; 20cm SCT (77x); Juan José González (Sierra de Nuestra Señora – Castrocontrigo, alt. 1140 m, León, España) [Más brillante que lo previsto. Coma amplia y difusa]
2013 Nov. 08.02 UT: m1=12.7, Dia.=1.3′, DC=2; 50.8cm L (189x); Sandor Szabo (Sieggraben, Austria) [Very diffuse comet, motion was checked 3 hours later]

C/2013 V1 (Boattini)
2013 Nov. 27.84 UT: m1=14.1, Dia.=0.9′, DC=3; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary)
2013 Nov. 25.84 UT: m1=14.1 CCD, Dia.=0.65′, Tail=1.4′ in PA 219 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Nov. 08.00 UT: m1=14.9, Dia.=0.6′, DC=3; 50.8cm L (307x); Sandor Szabo (Sieggraben, Austria) [Motion was checked during a 40 minutes period]

C/2013 V2 (Borisov)
2013 Dec. 15.20 UT: m1=11.1, Dia.=1.2′, DC=3; 20cm STC (80x); Carlos Labordena (Castellón, España)

C/2013 U1 (Catalina)
2013 Nov. 25.70 UT: m1=19.3 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

P/2013 R3 (Catalina-PANSTARRS)
2013 Oct. 13.94 UT: m1=17.1 CCD, Dia.=0.28′, Tail=0.8′ in PA 244 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 R1 (Lovejoy)
2013 Dec. 31.54 UT: m1=6.1, Dia.=6′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [SQM=20.48, LM=6.0]
2013 Dec. 30.20 UT: m1=5.7, Dia.=4.5′, DC=d7, Tail=2.6 deg. in PA: 346 deg.; 12cm R (40x); Uwe Pilz (Leipzig, Germany)
2013 Dec. 30.20 UT: m1=5.9, Dia.=7′, DC=6; 10x50B; Alex Scholten (Eerbeek, Netherlands) [Tail I= 0.9 degrees (1.5 degrees in 15x80B); PA= 335 degrees]
2013 Dec. 30.20 UT: m1=6.0, Dia.=7.5′, DC=5/, Tail=1.1 deg. in PA: 355 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Although it is fading, it´s still very bright and it has long tail]
2013 Dec. 28.21 UT: m1=6.3, Dia.=10′, DC=5, Tail=1.5 deg. PA: 350 deg.; 10×80 B; Martin Lehky (Czech Republic)
2013 Dec. 25.54 UT: m1=5.9, Dia.=3′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)[tail 1.1 deg long in p.a. 330 deg]
2013 Dec. 25.15 UT: m1=5.6, Dia.=9′, DC=5, Tail=0.65 deg. in PA: 350 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Some high clouds and moonlight interference.]
2013 Dec. 23.24 UT: m1=5.8, Dia.=6′, DC=6; 10x50B; Alex Scholten (Eerbeek, Netherlands) [Tail I=1 degree (1.7 degrees in 15x80B); PA= 340 degrees, moonlight]
2013 Dec. 22.50 UT: m1=6.5:, DC=5/, Tail: Visible; 10×50 B, Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 19.73 UT: m1=5.8, Dia.=~5′, DC=6; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 14 degrees, weak tail I=?; PA= 345 degrees]
2013 Dec. 19.54 UT: m1=5.7, Dia.=-, DC=3; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Dec. 18.71 UT: m1=5.8, Dia.=~5′, DC=6/; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 19 degrees, weak tail I= 0.9 degrees; PA= 345 degrees]
2013 Dec. 17.53 UT: m1=6.2:, Dia.=8′, DC=5/, Tail=0.5 deg in PA: 345deg.; 10×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 17.20 UT: m1=5.6, Dia.=15′, DC=5; naked eye; Martin Lehky (Czech Republic)
2013 Dec. 16.17 UT: m1=5.4, Dia.=9.5′, DC=6, Tail=2.5 deg in PA: 355 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Fading slowly, it is still very bright]
2013 Dec. 15.23 UT: m1=4.9, Dia.=12′, DC=6, Tail=1.5 grad.; a naked eye; Carlos Labordena (Castellón, España)
2013 Dec. 15.22 UT: m1=5.1, Dia.=12′, DC=7, Tail=4.5 grad.; 11×80 B; Carlos Labordena (Castellón, España)
2013 Dec. 14.87 UT: m1=5.5, Dia.=10′, DC=6/, Tail=1.2 deg in PA 345 deg; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Dec. 14.65 UT: m1=6.0, Dia=5′, DC=5, Tail= 30′ in pa: 350°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Twilight beginning, getting low to horizon. Comps TYC2580-2438-1 4.85, TYC2580-2437-1 6.40, Tycho2+Bessell corrections. Coma still somewhat elongated in direction of tail]
2013 Dec. 14.53 UT: m1=5.8, Dia.=6′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 0.9 deg long in p.a. 350 deg]
2013 Dec. 14.16 UT: m1=6.1, Dia.=7′, DC=7, Tail=1.7deg.; 15×70 B; Peter Mitrofanov (Pskov, Russia)
2013 Dec. 13.69 UT: m1=5.7, Dia.=4′, D=5, Tail=0.7 deg. PA: 345 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Dec. 13.43 UT: m1= 5.0 CCD, Dia.=9’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Dec. 12.43 UT: m1= 6.3 CCD, Dia.=12’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Dec. 12.235 UT: m1=4.9, Dia.=12′, DC=6, Tail: 1′; naked eye; Carlos Labordena (Serra d’Engarcerà, Castellón, España)
2013 Dec. 12.232 UT: m1=5.2, Dia.=12′, DC=7, Tail: 4′; 11×80 B; Carlos Labordena (Serra d’Engarcerà, Castellón, España)
2013 Dec. 10.73 UT: m1=5.5, Dia.=~8′, DC=7; 15x80B; Alex Scholten (Eerbeek, Netherlands) [hazy, moon, altitude 17 degrees]
2013 Dec. 10.52 UT: m1=5.5, Dia.=8′, DC=5/, Tail= 0.5 deg in PA: 335deg.; 10×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 10.23 UT: m1=5.4, Dia.=10′, DC=7, Tail: 2.20 deg in PA: 350 deg.; 8×40 b; Jakub Cerny (España)
2013 Dec. 09.23 UT: m1=5.5, Dia.=10′, DC=7, Tail: 2.10 deg in PA: 350 deg.; 8×40 b; Jakub Cerny (España)
2013 Dec. 08.84 UT: m1=5.4, Dia.=12′, DC=6/, Tail=1.9 deg in PA 340 deg; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Dec. 08.40 UT: m1= 6.6 CCD, Dia.=8’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Dec. 08.24 UT: m1=5.0, Dia.=10′, DC=7, Tail: 0.80 deg in PA: 345 deg.; naked eye; Jakub Cerny (España)
2013 Dec. 08.23 UT: m1=5.3, Dia.=10′, DC=7, Tail: 3.90 deg in PA: 345 deg.; 8×40 b; Jakub Cerny (España)
2013 Dec. 07.46 UT: m1= 6.3 CCD, Dia.=15’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Dec. 07.24 UT: m1=5.5, Dia.=10′, DC=7, Tail: 4.70 deg in PA: 340 deg.; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.22 UT: m1=5.3, Dia.=10′, DC=7, Tail: 3.70 deg in PA: 340 deg.; 8×40 B; Jakub Cerny (España)
2013 Dec. 07.22 UT: m1=4.8 Dia.=13′, DC=6, Tail= 60′; a naked eye; Carlos Labordena (España)
2013 Dec. 07.21 UT: m1=5.1 Dia.=12′, DC=7, Tail= 270′; 11×80 B; Carlos Labordena (España)
2013 Dec. 07.17 UT: m1=5.1, Dia.=11′, DC=5/, Tail=2 deg. in PA 345 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Naked eye attempt unsuccesful due to fading of comet. Heavy snow clouds interference]
2013 Dec. 07.16 UT: m1=5.0, Dia.=7′, DC=6; 8×56 B; Sandor Szabo (Hungary) [Tail is 4.5deg long to PA 345 deg. Easy object to the unaided eye]
2013 Dec. 07.16 UT: m1=[4.7, NEGATIVE; naked eye; Marek Biely (Brno, Czech Republic)
2013 Dec. 06.54 UT: m1=[4.0; naked eye; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 06.53 UT: m1=5.4, Dia.=10′, DC=4/, Tail= Visible; 10×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 06.43 UT: m1=5.0, Dia.=20′, DC=4, Tail= 0.5 deg. in PA: 330deg.; 15×70 B; Willian Souza (Orlando, FL, USA)
2013 Dec. 06.22 UT: m1=5.7, Dia.=~10′, DC=7; 10x50B; Alex Scholten (Eerbeek, Netherlands) [weak tail I= 1.4 degrees; PA= 340 degrees]
2013 Dec. 06.20 UT: m1=5.1, Dia.=10′, DC=7; naked eye; Jakub Cerny (España)
2013 Dec. 06.19 UT: m1=5.2, Dia.=10′, DC=7, Tail: 3.00 deg in PA  340 deg.; 8×40 B; Jakub Cerny (España)
2013 Dec. 05.21 UT: m1=5.1, Dia.=12′, DC=7/; naked eye; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España)
2013 Dec. 05.21 UT: m1=5.3, Tail: 2.2º en PA: 340º; 10×50 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España)
2013 Dec. 05.20 UT: m1=5.0, Dia.=10′, DC=7; naked eye; Jakub Cerny (España)
2013 Dec. 05.19 UT: m1=5.2, Dia.=10′, DC=7, Tail: 2.25 deg in PA  350 deg.; 8×40 B; Jakub Cerny (España)
2013 Dec. 04.17 UT: m1=5.1, Dia.=10′, DC=7/, Tail: 2.80 deg in PA  335 deg.; 8×40 B; Jakub Cerny (España)
2013 Dec. 04.17 UT: m1=4.9, Dia.=10′, DC=7/; naked eye; Jakub Cerny (España)
2013 Dec. 03.13 UT: m1=5.7, Dia.=12′, DC=6; naked eye; Martin Lehky (Czech Republic)
2013 Dec. 02.54 UT: m1=5.3, Dia.=8′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 1.0 deg. long in p.a. 335 deg.]
2013 Dec. 02.54 UT: m1=5.2, Dia.=-, DC=3; naked eye; Carl Hergenrother (Tucson, Arizona, USA)
2013 Dec. 02.21 UT: m1=5.2, Dia.=7′, DC=d7, Tail=0.8 deg. PA: 336 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Dec. 01.21 UT: m1=5.2, Dia.=7′, DC=d7, Tail=0.8 deg. PA: 336 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Nov. 30.74 UT: m1=4.8, Dia.=12′, DC=5, Tail=0.75 deg. in PA: 320 deg.; 7-15×35 B (7x); Marek Biely (Brno, Czech Republic) [Naked eye attempt unsuccesful because the comet was too low. Tail in PA 40 deg. was due to evening observation. Comet is fairly bright.]
2013 Nov. 30.73 UT: m1=[4.6, NEGATIVE, naked eye; Marek Biely (Brno, Czech Republic)
2013 Nov. 30.40 UT: m1= 6.5 CCD, Dia.=14’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 30.10 UT: m1=4.8, Dia.=12′, DC=7, Tail 2.5 deg. in PA 320 deg.; 10x50B; Timo Karhula (Åkesta observatory, Västerås, Sweden)
2013 Nov. 29.45 UT: m1= 5.9 CCD, Dia.=16’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 28.65 UT: m1=5.4, Dia.=9′, DC=5, Tail= 40′ in pa: 330 deg.; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Moonlight. Coma elongated in direction of tail]
2013 Nov. 28.50 UT: m1=4.5:; naked eye; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 28.50 UT: m1=4.3, Dia.=12′, DC=5, Tail= 0.5 deg. in PA 290 deg.; 7×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 28.22 UT: m1=4.7, Dia.=15′, DC=7/; naked eye; Juan José González (Cueto Rosales, 1420 m alt., León, España ) [En 10x50B: m1=5.1, Tail: 3.2º en PA 320º; ligera interferencia de la luz lunar]
2013 Nov. 28.11 UT: m1=5.0, Dia.=14′, DC=6/, Tail=1.3 deg. in PA 300 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Very good sky condition. I observed it earlier than last time, so I saw the coma diameter about a bit smaller and the comet was about a bit fainter. But it is very bright and easily visible by binocular. By naked eye it is hard indeed.]
2013 Nov. 28.10 UT: m1=4.8, Dia.=15′, DC=1/; naked eye; Marek Biely (Brno, Czech Republic)
2013 Nov. 27.16 UT: m1=4.7, Dia.=17′, DC=1; naked eye; Marek Biely (Brno, Czech Republic) [I was surprised, that it is visible to the naked eye! By the naked eye it is very diffuse, large and precisly on the limits. But it is very bright as well. Moonlight interference]
2013 Nov. 27.14 UT: m1=5.0, Dia.=12′, DC=5; 7×50 B; Sandro Baroni (Milano, Italia)
2013 Nov. 26.863 UT: m1=5.8, Dia.=8´, DC=4; 11X80 B; Angelito Sing (Makati, Philippines) [Comet lower than last week. ther is a bright last quarter moon that is causing light pollution. the moon could be the reason why the comet seems fainter and smaller]
2013 Nov. 25.82 UT: m1=4.9, Dia.=15′, DC=5, Tail=1.5 deg in PA 320 deg; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Nov. 25.53 UT: m1=4.8, Dia.=-, DC=3; naked eye; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 25.52 UT: m1=4.8, Dia.=10′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 1.5 deg long in p.a. 305 deg]
2013 Nov. 25.20 UT: m1=4.8, Dia.=12′, DC=7/; naked eye; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, 1140 m alt., León, España) [En 10x50B: m1=5.0, Tail: 2.3º en PA 320º; Interferencia de la luz lunar]
2013 Nov. 25.19 UT: m1=5.0, Dia.=10′, DC=4; 7×50 B; Sandro Baroni (Milano, Italia)
2013 Nov. 25.17 UT: m1=4.7, Dia.=7′, DC=d7; 8×24 B; Uwe Pilz (Leipzig, Germany)
2013 Nov. 25.14 TU: m1=5.1, Dia.=16′, DC=6, Tail= 1.1 deg. in PA: 305 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [First time when I saw the tail of this comet. It is very bright and large, although the naked eye attempt was unsuccesful. Heavy snow clouds and moonlight interference.]
2013 Nov. 24.64 UT: m1=5.7, Dia.=10′, DC=5, Tail= 25′ in pa: 320°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Moonlight. Coma elongated in direction of tail]
2013 Nov. 23.19 UT: m1=5.0, Dia.=13′, DC=7, Tail= 1.7º in PA: 310º: 10×50 B; Juan José González (Andarraso, alt. 1470 m, León, España) [Interferencia de la luz lunar]
2013 Nov. 23.10 UT: m1=4.9, Dia.=17.5′, DC=5; 15×70 B; Danil Sidorko (Korenovsk, Russia)
2013 Nov. 22.23 UT: m1=4.9, Dia.=13, DC=5, Tail= 30′; naked eye; Carlos Labordena (Castellón, España)
2013 Nov. 22.22 UT: m1=5.1, Dia.=13, DC=6, Tail= 70′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 21.88 UT: m1=5.6, Dia.=14′, DC=5; 11X80 B; Angelito Sing (Makati, Philippines) [Diameter not so accurate due to the rains coluds. Observed it for less than 5  minutes before clouds cover them]
2013 Nov. 21.49 UT: m1=5.3, Dia.=11′; 10×50 B; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Nov. 21.41 UT: m1=5.0, DC=5; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 21.19 UT: m1=5.2, Dia.=13′, DC=7,  Tail: 1.2º in PA 290º; 10×50 B; Juan José González ( Aldeanueva de Figueroa, 910 m alt., Salamanca, España) [Interferencia lunar]
2013 Nov. 20.45 UT: m1=5.0, DC=5; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 20.41 UT: m1=5.2, Dia.=9′, DC=4; 10×50 B; John D Sabia (Fleetville, Pennsylvania, USA)
2013 Nov. 20.40 UT: m1= 6.5 CCD, Dia.=6’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 20.20 UT: m1=5.2, Dia.=16′, DC=5/; 10x50B; Alex Scholten (Eerbeek, Netherlands) [weak tail l = 1.7 degrees; PA = 295 degrees]
2013 Nov. 19.87 UT: m1=5.5, Dia.=14′, DC=4; 11X80 B; Angelito Sing (Makati, Philippines)
2013 Nov. 19.51 UT: m1=5.1, Dia.=12′, DC=6; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)[tail 1.1 deg long in p.a. 285 deg]
2013 Nov. 19.30 UT: m1=4.8, Dia.=15′, DC=5, Tail: 0.7 degrees in PA 290 degrees; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 19.17 UT: m1=5.2, Dia.=12′, DC=5; 7×50 B; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight]
2013 Nov. 18.51 UT: m1=5.3, Dia.=9′, DC=6; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail: 0.6 deg. long. in p.a. 270 deg.]
2013 Nov. 18.16 UT: m1=5.0, Dia.=13′, DC=3; 10×50 B; Roberto Haver (Roma, Italia)
2013 Nov. 17.88 UT: m1=6.0, Dia.=8′, DC=4; 25X100 B; Angelito Sing (Makati, Philippines)
2013 Nov. 17.42 UT: m1=5.2, DC=5; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 17.40 UT: m1=5.0, DC=5; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 17.34 UT: m1= 7.0 CCD, Dia.=16’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 17.31 UT: m1=5.2, Dia.=12′, DC=5; 7×50 B; Marco Goiato (Araçatuba, Brasil) [clouds, nautical twilight, moonlight]
2013 Nov. 16.78 UT: m1=4.9, Dia.=21′, DC=7; 10×70 R; Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 16.64 UT: m1=6.2, Dia.=10′, DC=5, Tail 30′ in pa: 300°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [SQM-L: 19.2, Comps TYC2514-1295-1 5.56, TYC2515-1141-1 6.41, Tycho2+Bessell corrections. Coma elongated in direction of tail.]
2013 Nov. 16.27 UT: m1=5.8, Dia.=12′, DC=5/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 15.51 UT: m1=6.0, Dia.=15′, DC=4/; 7×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 15.30 UT: m1=5.4, Dia.=16′, DC=5/, Tail: 1 degree in PA 290 degrees; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 15.27 UT: m1=5.4, Dia.=15′, DC=4; 10×50 B; Willian Souza (Sao Paulo, Brazil)
2013 Nov. 15.27 UT: m1=5.8, Dia.=12′, DC=5/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 14.71 UT: m1=5.8, Dia.=15’, DC=6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Large faint outer coma, bright inner coma wth small central condensation, sometimes stellar, Low alt – 12.1°.
2013 Nov. 14.51 UT: m1=5.5, Dia.=15′, DC=6; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 0.8 deg long in p.a. 290 deg]
2013 Nov. 14.34 UT: m1=5.5, Dia.=16´, DC=5/6, Tail: 30´en PA 285 deg.; 7×50 B; Gonzalo Vargas B.(Cochabamba, Bolivia)
2013 Nov. 14.27 UT: m1=5.9, Dia.=12′, DC=5/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 14.20 UT: m1=5.2, Dia.=15′, DC=7; naked eye; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [En 10x50B: m1=5.4, Tail: 1.7º en PA 300º]
2013 Nov. 14.188 UT: m1=5.4; a naked eye; Carlos Labordena (Castellón, España)
2013 Nov. 14.184 UT: m1=5.6, Dia.=13′, DC=6, Tail=35′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 14.15 UT: m1=5.6, Dia.=20′, DC=5, Tail: 1.60 deg in PA: 280 deg.; 8×40 B; Jakub Cerny (Sieggraben, Austria)
2013 Nov. 14.03 UT: m1=5.5, Dia.=11′, DC=6; 20×80 B; Marek Biely (Brno, Czech Republic) [It is fantastic. Bright and large, very easily visible.]
2013 Nov. 13.73 UT: m1=5.4; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Faintly visible with naked eye]
2013 Nov. 13.73 UT: m1=6.1, Dia.=13′, DC=5; 8×40 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Nov. 13.71 UT: m1=5.8, Dia.=20’, DC=1; 0.0E; Chris Wyatt (Walcha, NSW, Australia) [Coma very diffused and easily located naked eye, diameter was difficult to estimate due to low alt]
2013 Nov. 13.70 UT: m1=5.8, Dia.=15’ DC=6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears to have smaller outer coma, with bright central condensation offset to the ESE, bright inner coma gradually fades to edges and shows an elongation to the WSW, no tail observed, Alt – 15°]
2013 Nov. 13.30 UT: m1=5.6, Dia.=16′, DC=5, Tail= 1 deg. in PA: 290 deg.; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 13.27 UT: m1=6.0, Dia.=12′, DC=5; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 13.27 UT: m1=6.0, Dia.=12′, DC=4; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Nov. 13.19 UT: m1=5.8, Dia.=15′, DC=6; 8×40 B; Alex Scholten (Eerbeek, Netherlands) [weak tail in 15x80B (long= ~1 degrees; PA= 270 degrees)]
2013 Nov. 13.03 UT: m1=5.9, Dia.=10′, DC=5; 10×80 B; Martin Lehky (Czech Republic)
2013 Nov. 12.71 UT: m1=5.6, Dia.=45’, DC=0/1; 0.0E; Chris Wyatt (Walcha, NSW, Australia) [Coma large and very diffuse, easily picked up naked eye. Limiting mag in vicinity 6.0+, very clean clear sky. Nearby stars near naked eye threshold may have contributed to coma diameter estimate]
2013 Nov. 12.70 UT: m1=6.0, Dia.=19.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with small bright central condensation, not quite stellar. Narrow tail 19’ in P.A.: 288°]
2013 Nov. 12.44 UT: m1=6.5:, Dia.=12′, DC=6/; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 12.27 UT: m1=6.0, Dia.=10′, DC=5; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 12.19 UT: m1=6.2, Dia.=10′, DC=4; 10×50 B; José J. Chambó (Vallés, Valencia, España)
2013 Nov. 12.16 UT: m1=5.0; naked eye; Uwe Pilz (Leipzig, Germany)
2013 Nov. 12.16 UT: m1=5.0, Dia.=7′, DC=6; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Nov. 12.06 UT: m1=5.7, Dia.=15′, DC=4; naked eye; Martin Lehky (Czech Republic)
2013 Nov. 11.33 UT: m1=6.2, Dia.=8×12′, DC=5/6; 25cm L f/4.5 (45x); Gonzalo Vargas B. (Cochabamba, Bolivia)
2013 Nov. 11.29 UT: m1=6.0, Dia.=16′, DC=5; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 11.20 UT: m1=5.4, Dia.=15′, DC=7; naked eye; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, alt. 1140 m, León, España) [En 10x50B: m1=5.6; la Tail iónica observada ( 2.2º en PA 290º ) se muestra con una longitud mucho mayor que hace 5 días (0.7º)]
2013 Nov. 11.18 UT: m1=6.0, Dia.=17′, DC=6; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [weak tail in 42x200L (long= 0.3 degrees; PA= 275 degrees)]
2013 Nov. 10.62 UT: m1=6.7, Dia.=15′, DC=4, Tail= 30′ in pa 310°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [SQM-L: 21.3, Comps TYC1954-1551-1 6.90, Tycho2+Bessell corrections. Some high clouds passing, estimated during clear hole.]
2013 Nov. 10.53 UT: m1=6.2, Dia.=14′, DC=5; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 10.28 UT: m1=6.2, Dia.=10′, DC=5; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 10.26 UT: m1=6.3, Dia.=10′, DC=3; 20×60 B; Willian Souza (Sao Paulo, Brazil)
2013 Nov. 10.169 UT: m1=6.4, Dia.=7′, DC=6, Tail=12′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 09.72 UT: m1=5.7, Dia.=12′; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Faintly visible with naked eye]
2013 Nov. 09.29 UT: m1=6.2, Dia.=15′, DC=4; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 09.29 UT: m1=6.4, Dia.=12′, DC=5, Tail: 0.3º in PA 270º; 20×100 B; Marco Goiato (Araçatuba, Brasil);
2013 Nov. 09.28 UT: m1=6.3, Dia.=10′, DC=4/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 08.77 UT: m1=6.0, Dia.=18′, DC=7; 7cm R (10x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 08.50 UT: m1=6.5, Dia.=14′, DC=6; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.47 UT: m1=7.0, Dia.=10′, DC=6; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: not visible]
2013 Nov. 08.29 UT: m1=6.3, Dia.=14′, DC=4/; 7×50 B; Marco Goiato (Araçatuba, Brasil) [clouds]
2013 Nov. 08.28 UT: m1=6.4, Dia.=8′, DC=4/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 08.189 TU: m1=6.7, Dia.=7′, DC=6, Tail=15′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 08.16 UT: m1=6.4, Dia.=12′, DC=6; 8×56 B; Sandor Szabo (Sieggraben, Austria) [with 50.8L, 189x: tail is 30’ long. 307x: There is a fountain like feature from the starlike false-nucleus to the east, 0.9’ long]
2013 Nov. 08.16 UT: m1=6.5, Dia.=14′, DC=4, 8×40 B; Jakub Cerny (Sieggraben, Austria)
2013 Nov. 08.14 UT: m1=5.8, Dia.=14′; naked eye; Timo Karhula (Åkesta Observatory, Västerås, Sweden) [40cm L (68x) showed a 11 magnitude pseudonucleus; DC=6/]
2013 Nov. 08.09 UT: m1=6.8, Dia.=7′, DC=5/; 20×80 B; Marek Biely (Brno, Czech Republic) [It locates very high in the morning sky. Clouds and fog interference, so mabye I underestimated.]
2013 Nov. 07.69 UT: m1=6.6, Dia.=16.5’, DC=5/6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Not visible to naked eye, no obvious signs of a tail, coma elongated to WSW PAprox., small central condensation, sometimes PApears stellar in periods of good seeing]
2013 Nov. 07.50 UT: m1=6.5, Dia.=12′, DC=5; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 07.30 UT: m1=6.6, Dia.=6×8′, DC=5/6; 25cm L f/4.5 (45x); Gonzalo Vargas B. (Cochabamba, Bolivia)
2013 Nov. 07.28 UT: m1=6.5:, Dia.=8′, DC=3; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Nov. 07.16 UT: m1=6.5, Dia.=17′, DC=5; 20×60 B; José J. Chambó (Vallés, Valencia, España)
2013 Nov. 06.77 UT: m1=6.8, Dia.=10.7′, DC=5; 20cm L (30x); Man-To Hui (Nhut Thong Pau, Canton, China) [city lights; Probably I saw some hint of its tail, but I couldn’t convince myself]
2013 Nov. 06.72 UT: m1=6.5, Dia.=7.5′, DC=4/; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 Nov. 06.72 UT: m1=6.5, Dia.=9’, DC=5; 10×50 B; Rob Kaufman (White Cliffs, NSW, Australia) [Large, slightly oval nebulous patch with bright, star-like inner coma in and out of vision. No tail visible. Clear sky, dust around horizon, Method=M, comp stars from NOMAD1 catalogue]
2013 Nov. 06.70 UT: m1=6.0, Dia.=-, DC= -; naked eye; Rob Kaufman (White Cliffs, NSW, Australia) [NELM at zenith 7+, comp stars 20 Cancri V=5.9 and 25 Cancri V=6.1. Star-like, could be held in averted vision]
2013 Nov. 06.68 UT: m1=6.5, Dia.=14.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [No tail, coma elongated to WSW PAproximately. Large diffuse outer coma, gradually brightening to small central condensation which is almost stellar. Sky transparency fair, humid air present, fog at ground level]
2013 Nov. 06.183 TU: m1=7.1, Dia.=7′, DC=5; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 06.18 UT: m1=5.9, Dia.=12′, DC=7; naked eye; Juan José González ( Collada del Fresno – Sierra del Aramo, alt. 1220 m, Asturias, España) [En 10x50B: m1=6.3, Tail: 0.7º en PA 270º.]
2013 Nov. 05.71 UT: m1=6.3, Dia.=17.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail 8.7’ length in P.A. 284, coma quite diffused with bright and almost stellar central condensation, strongly enhances using Swan Band filter. Naked eye attempt successful but PApears very faint, LM = 6.4, averted vision worked best. Very diffuse (DC=0/1) and difficult to obtain m1 value.]
2013 Nov. 05.26 UT: m1=6.8, Dia.=12′, DC=3/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Nov. 04.74 UT: m1=6.2; 10×50 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 04.68 UT: m1=6.3, Dia.=14’ DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with almost stellar central condensation, naked eye attempt unsuccessful]
2013 Nov. 04.49 UT: m1=6.3, Dia.=14′, DC=5; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 04.45 UT: m1=6.5, Dia.=15′, DC=5; 10×50 B; Jorge Solano(Guatemala)
2013 Nov. 03.75 UT: m1=6.9, Dia.=10′, DC=5; 8×40 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Nov. 03.72 UT: m1=6.3, Dia.=15′; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 03.27 UT: m1=6.9, Dia.=8′, DC=4/; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Nov. 03.25 UT: m1=6.8, Dia.=10′, DC=3; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Nov. 03.187 TU: m1=7.6, Dia.=7′, DC=4; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 03.183 TU: m1=7.8, Dia.=7′, DC=5, Tail=15′; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Nov. 03.11 UT: m1=6.6, Dia.=14′, DC=4; 20×60 B; José J. Chambó (Hoya Redonda, Valencia, España)
2013 Nov. 02.69 UT: m1=6.6, Dia.=13.3’, DC=5/6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Close to bright star (6.4), bright central condensation, PApears stellar-like in good seeing, enhances very well with Swan Band filter held at eyepiece, negative naked eye attempt. No tail]
2013 Nov. 02.67 UT: m1=7.0, Dia.=10.0′, DC=6; 11cm R f7 (45x); John Drummond (Gisborne, New Zealand) [Comet Lovejoy easy to see in the 11cm f7 refractor. A large, fuzzy patch with some condensation and no tail. Used TYC 802 1776 (mag 6.3), TYC 806 967 (mag 7.3), and TYC 802 999 (mag 8.9). Comet 29 degrees altitude in the NE. Naked eye LM = 5.8 near comet. Clear, dark rural sky.]
2013 Nov. 02.29 UT: m1=7.3, Dia.=10′, DC=4/; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 02.29 UT: m1=7.1, Dia.=12′, DC=3; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 02.28 UT: m1=6.7, Dia.=10′, DC=3; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Nov. 02.28 UT: m1=7.0, Dia.=8′, DC=4; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Nov. 01.75 UT: m1=7.0, Dia.=10′, DC=5; 8×40 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Nov. 01.48 UT: m1=6.7, Dia.=10′, DC=5; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 01.25 UT: m1=7.4, Dia.=8′, DC=4; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Nov. 01.14 UT: m1=6.7, Dia.=&15′, DC=6; naked eye; Piotr Guzik (Przełęcz Szklarska, Poland) [The comet was visible with naked eye as 6.5 mag spot, but there was 8.6 mag star inside coma during the observation, thus I subtracted 0.2 mag to take that into account. Excellent transparency with stars up to 7.3 mag visible with naked eye in comet’s vicinity]
2013 Nov. 01.13 UT: m1=7.6, Dia.=5′, DC=4/; 20×80 B; Marek Biely (Brno; Czech Republic)
2013 Nov. 01.11 UT: m1=6.6 CCD + V filter, Dia.=7′, DC=5; 6.8cm R f/4 (5x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Cat.(TJ)- 4 comparison stars: V=(8.5-10.7) with color index B-V=(0.56-0.59)]
2013 Nov. 01.10 UT: m1=6.9, Dia.=13′, DC=5; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Bright and large. Coma elongated towards p.a. 280 deg. Faint straight tail 0.2 deg long in p.a.~280 deg could also be glimpsed in 32.6 cm reflector (50x)]
2013 Nov. 01.06 UT: m1=6.7 CCD + V filter, Dia.=7′, DC=5; 6.8cm R f/4 (5x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland)[Cat.(TJ)- 4 comparison stars: V=(8.5-10.7) with color index B-V=(0.56-0.59)]
2013 Nov. 01.03 UT: m1=7.2, Dia.=8′, DC=3/; 25×100 B; Martin Lehky (Czech Republic)
2013 Oct. 31.75 UT: m1=7.3, Dia.=8′, DC=5; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Oct. 31.68 UT: m1=6.9, Dia.=13.6’, DC=4/5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, close to bright star, no tail.]
2013 Oct. 31.29 UT: m1=7.1, Dia.=9′, DC=4; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [nebulosity interference]
2013 Oct. 31.17 UT: m1=7.2, DC=5; 7×50 B; Uwe Pilz (Leipzig, Germany) [In 32cm L f/5 (72x) Dia.=6, DC=d5, Tail= 6′ in PA: 270 deg.]
2013 Oct. 31.15 UT: m1=7.2, Dia.=8′, DC=6; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 25x100B: m1=7.5, Tail: 0.4º en PA 280º. Coma elongada]
2013 Oct. 31.15 UT: m1=7.5, Dia.=7′, DC=4; 20×60 B; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight; No Tail]
2013 Oct. 31.15 UT: m1=7.7, Dia.=11′, DC=5; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 21 degrees]
2013 Oct. 31.13 UT: m1=7.9, Dia.=8.6′, DC=5; 25×100 B; Jakub Cerny  (Senohraby, Czech Republic)
2013 Oct. 31.13 UT: m1=8.0, Dia.=8.6′, DC=5/; 35cm L (64x); Jakub Cerny  (Senohraby, Czech Republic)
2013 Oct. 31.12 UT: m1=7.4, Dia.=10′, DC=5; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland)
2013 Oct. 31.04 UT: m1=7.2, Dia.=9′, DC=3/; 25×25 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 30.68 UT: m1=7.6, Dia.=11.5’, DC=5/6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [No tail, line of stars at coma edge to S, large coma with faint outer edges, small central condensation with nearly stellar core]
2013 Oct. 30.50 UT: m1=7.3, Dia.=10′, DC=5; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 29.29 UT: m1=7.1, Dia.=9′, DC=3; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 29.17 UT: m1=7.8, Dia.=8′, DC=2; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude:15º]
2013 Oct. 29.15 UT: m1=7.8, Dia.=12′; 7×50 B; NiTails Biver (Ablis, France) [Large and diffuse coma]
2013 Oct. 29.14 UT: m1=8.3, Dia.=8.0′, DC=4, Tail: 0.3deg. in PA: 270; 40.7cm L (58x); NiTails Biver (Ablis, France)
2013 Oct. 29.10 UT: m1=7.3, Dia.=10′, DC=5; 8×56 B; Sandor Szabo (Boly, Hungary) [25T, 77x: Tail is 5’ long]
2013 Oct. 28.30 UT: m1=8.1, Dia.=8′, DC=3; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Oct. 28.190 TU: m1=9.1, Dia.=6′, DC=4; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Oct. 27.46 UT: m1=8.4; 10×50 B; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 27.30 UT: m1=8.7, Dia.=2.5′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Oct. 27.17 UT: m1=8.1, Dia.=~10′ DC=5; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [possible underestimated due to moonlight, Last Quarter]
2013 Oct. 26.75 UT: m1=8.0, Dia.=4.0′, DC=3; 11×70 B; Con Stoitsis (Nagambie, Victoria, Australia) [Moonlight Interference. Coma uniformed Brightness]
2013 Oct. 26.47 UT: m1=8.9, Dia.=4′, DC=4/; 25cm L (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 24.71 UT: m1=8.2, Dia.=3.9’, DC=3/4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma easily visible. Outer coma faint, gradual in brightness to centre to a moderately condensed central condensation. Enhances well with Swan Band filter. No tail]
2013 Oct. 23.13 UT: m1=8.7 CCD + V filter, Dia.=2.2′, DC=5; 6.8cm R f/6 (13x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight. Catalogue [TJ] – 2 comparison stars: V=8.9 and 9.4 with color index B-V=0.56 and 0.66, respectively]
2013 Oct. 23.10 UT: m1=8.5, Dia.=5′, DC=5; 10×50 B; Piotr Guzik (Biórków Mały, Poland) [Only faintly seen. Bright moon ~40 degrees away]
2013 Oct. 23.10 UT: m1=8.8, Dia.=4′, DC=5; 32.6cm L (50x); Piotr Guzik (Biórków Mały, Poland)
2013 Oct. 22.17 UT: m1=9.2, Dia.=4.0′, DC=5; 40.7cm L (58x); NiTails Biver (Versailles, France)
2013 Oct. 20.31 UT: m1=8.4, Dia.=5′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [moonlight]
2013 Oct. 20.25 UT: m1=9.5:, Dia.=1.5′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Oct. 20.14 UT: m1=9.0, Dia.=5′, DC=4; 20.3cm L (63x); Piotr Guzik (Krosno, Poland)  [Easily visible despite very bright moonlight]
2013 Oct. 19.15 UT: m1=[9.1 Negative; 20×80 B; Marek Biely (Brno, Czech Republic)
2013 Oct. 18.10 UT: m1=8.7 CCD, Dia.=3′, DC=6; Digital Reflex + 0.3m lens; Giuseppe PPApa (Sicily, Italy)
2013 Oct. 16.72 UT: m1=9.3, Dia.=3.3’, DC=3/4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Small central condensation, no tail, coma elongated to the West PAproximately, enhances well in Swan Band filter. Moonlight interference]
2013 Oct. 16.50 UT: m1=8.7, Dia.=5′, DC=5; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 16.22 UT: m1=8.7, Dia.=7′, DC=4; 25×100 B; Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España)
2013 Oct. 16.22 UT: m1=8.9; 20 cm SCT (77x); Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España) [Coma elongada. Crepúsculo astronómico]
2013 Oct. 15.72 UT: m1=9.6, Dia.=3′; 25×100 B; David A. J. Seargent (The Entrance, NSW, Australia) [Quite strongly enhanced through Swan Band filter]
2013 Oct. 15.29 UT: m1=10.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [very close to TYC 162-1293-1]
2013 Oct. 14.72 UT: m1=9.3:, Dia.=6.4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail. Comet located in crowded star field, background stars in coma making m1 estimate difficult, coma PApears elongated to the West PAproximately, averted vision]
2013 Oct. 14.70 UT: m1=9.0, Dia.=7.0′, DC=2; 20cm reflector; Con Stoitsis (Clonbinane, Victoria, Australia) [No tail observed, noisy FOV made mag and coma size estimate difficult]
2013 Oct. 13.76 UT: m1=9.3, Dia.=6.5′, DC=4; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 13.14 UT: m1=10.7, Dia.=3′, DC=3, no Tail; 20cm SCT(50x); Carlos Labordena (Castellón, España)
2013 Oct. 12.76 UT: m1=10.4, Dia.=4.5′, DC=5; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.75 UT: m1=9.6, Dia.=4′, DC=3; 20cm L (57x); Michael Mattiazzo (Swan Hill, Victoria)
2013 Oct. 12.31 UT: m1=10.5, Dia.=1.3′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 11.75 UT: m1=9.3, Dia.=5′, DC=4; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.50 UT: m1=9.3, Dia.=4′, DC=4; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 11.29 UT: m1=10.0, Dia.=4′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [better visualization with Swan filter]
2013 Oct. 09.67 UT: m1=9.8, Dia.=4.4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse and in crowded star field. Coma elongated to the West PAproximately, measuring 4.4’ x 5.0’. Slightly condensed central condensation]
2013 Oct. 09.44 UT: m1=10.5, Dia.=4′, DC=4; 25cm Reflector (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 09.29 UT: m1=10.4, Dia.=1.3′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 08.73 UT: m1=10.1, Dia.=3.5′, DC=2; 20cm L (57x); Michael Mattiazzo (Swan Hill, Victoria) [comet PApears to be brightening more rPAidly than expected and is on track for a faint naked eye performance in December]
2013 Oct. 08.30 UT: m1=10.9, Dia.=1′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 07.30 UT: m1=10.6, Dia.=1′, DC=5/; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 07.17 UT: m1=9.7, Dia.=6′, DC=3/; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20cm SCT (77x): m1=10.1. Coma elongada]
2013 Oct. 06.32 UT: m1=11.0:, DC=6; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Oct. 05.48 UT: m1=11.1; 41cm reflector; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 05.31 UT: m1=11.0:, Dia=2′; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [close to TYC 4803-01050-1]
2013 Oct. 05.133 UT: m1=10.7, Dia.=1,5′, DC=2; 40cm L (120x); Gabor Santa (Polaris Observatory, BudPAest, Hungary) [coma elongated to PA: 190]
2013 Oct. 04.08 UT: m1=10.2, Dia.=4′, DC=3; 32.6cm L (50x); Piotr Guzik (Dosłońce, Poland) [Bright and easy to see]
2013 Oct. 04.07 UT: m1=10.5, Dia.=1.7′, DC=6; 50.8cm refl. (189x); Sandor Szabo (Hungary) [Droplike coma, short 2’ long tail to PA 250 deg.]
2013 Oct. 03.73 UT: m1=10.2, Dia.=4.3’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SW PAproximately, measures 4.3’ x 4.7’, no tail. Moderately condensed, enhances using Swan Band filter]
2013 Oct. 03.70 UT: m1=10.8, Dia.=3.5′, DC=4/; 30cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia) [Coma elongated to SSW. No tail observed]
2013 Oct. 03.09 UT: m1=10.8, Dia.=2.3′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Oct. 02.08 UT: m1=10.6, Dia.=4.0′, DC=3; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.44 UT: m1=11.0, Dia.=3′, DC=2; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Sep. 29.73 UT: m1=10.1, Dia.=5.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Coma very large and diffuse, faint outer coma brightening to a slightly more condensed central condensation. Averted vision, enhances using Swan Band filter]
2013 Sep. 28.74 UT: m1=10.6, Dia.=3.8’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight. No tail, coma diffuse and gradually brightens to centre, enhances using Swan Band filter]
2013 Sep. 27.67 UT: m1=10.8, Dia.=2.1′, DC=3; 41cm L (96x); John Drummond (Gisborne, New Zealand) [Comet Lovejoy seen with averted vision. A fairly large, fuzzy patch with little condensation and no tail. Used TYC 4806298 (mag 9.24), TYC 48062847 (mag 10.57), and TYC 4806148 (mag 10.75). Comet 45 degrees altitude in the NE. Clear, dark rural sky.]
2013 Sep. 14.39 UT: m1=13.1, Dia.=1.4′, DC=3; 45.7cm L f/4.2 (191x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Relatively easy to see; brighter than I expected.]
2013 Sep. 13.16 UT: m1=12.7, Dia.=1.5′, DC=3; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 25º. Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña, buen seeing]
2013 Sep. 11.73 UT: m1=12.2, Dia.=1.9’, DC=1/2; 25cm L f:5 (39x) Chris Wyatt (Walcha, NSW, Australia) [Close to bright stars, coma diffuse with fan shPAed PApendage to SSE, does not enhance using Swan Band filter]

C/2013 P4 (PANSTARRS)
2013 Oct. 08.79 UT: m1=17.8 CCD, Dia.=0.38′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 P3 (Palomar)
2013 Nov. 09.86 UT: m1=18.0 CCD, Dia.=0.24′, Tail=0.3′ in PA 358 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 P2 (PANSTARRS)
2013 Oct. 09.79 UT: m1=19.4 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

P/2013 O2 (PANSTARRS)
2013 Aug. 14.96 UT: m1=18.3: CCD, Dia.=0.2′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [poor quality images]
2013 Oct. 14.01 UT: m1=17.0 CCD, Dia.=0.62′, Tail=0.9′ in PA 269 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 N4 (Borisov)
2013 Dec. 07.19 UT: m1=12.1, Dia.=1.5′, DC=2; 25 cm L (125x); Sandor Szabo (Hungary)
2013 Nov. 08.17 UT: m1=11.8, Dia.=1.6′, DC=1; 50.8cm L (189x); Sandor Szabo (Sieggraben, Austria)
2013 Oct. 29.17 UT: m1=10.5, Dia.=2.5′, DC=3; 25.0 cm refl. (77x); Sandor Szabo (Boly, Hungary)
2013 Oct. 12.80 UT: m1=10.8, Dia.=1.3′, DC=3/; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Aug. 18.17 UT: m1=8.8, Dia.=6′, DC=2/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Significativamente más brillante que lo previsto. Coma amplia y difusa. Comienzo del crepúsculo astronómico. Altura sobre el horizonte: 9º. Cielo muy claro de montaña]
2013 Aug. 11.39 UT: m1=11.4, Dia.=2.5′, DC=2; 30.5cm L (115x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA) [Comet 8.4 degrees altitude; Sun -16.3 degrees altitude]
2013 Aug. 06.06 UT: m1=11.5, Dia.=0.6’, DC=3; 50.8cm L (187x); Sandor Szabo (Hungary) [Motion was checked]
2013 Aug. 04.38 UT: m1=11.2, Dia.=3.0′, DC=2; 30.5cm L (115x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Comet 9 degrees altitude; Sun -17 degrees altitude. Immediately visible upon star hopping to comet’s position; diffuse with size]
2013 Aug. 03.36 UT: m1=10.8, Dia.=3.5′, DC=2; 37cm L (142x); Bob King (Duluth, Minnesota, USA) [Diffuse, “puffy” object with broad, brighter core. Comet 9 degrees high at start of morning twilight. Visible also in Swan Band filter but only a small improvement in contrast seen.]
2013 July 18.13 UT: m1=11.0, Dia.=3′, DC=2; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Más brillante que lo previsto. La débil coma externa es difícil de observar con mayores aumentos. Movimiento seguido durante 30 minutos. Estrellas de campo comprobadas en el DSS y USNO A2.0. Algunas estrellas en la coma, la más brillante con mag 12.4 (GSC). Comienzo del crepúsculo astronómico. Altura sobre el horizonte: 13º. Cielo muy claro de montaña]
2013 July 17.35 UT: m1=12.9, Dia.=1.5′, DC=3; 37cm L (242x); Bob King (Duluth, Minn., USA) [It was very faint and diffuse and 13 degrees high at the start of morning twilight. Luckily no aurora in that direction to wash it out]

C/2013 L2 (Catalina)
2013 Aug. 30.78 UT: m1=18.8: CCD, Dia.=0.19′, Tail=0.3′ in PA:139 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 J6 (Catalina)
2013 Jun. 30.83 UT: m1=18.7 CCD, Dia.=0.24′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

P/2013 J2 (McNaught)
2013 Nov. 27.80 UT: m1=15.6, Dia.=0.2′, DC=6; 50.8cm L (307x); Sandor Szabo (Sopron, Hungary) [Very small compact object, motion was checked]
2013 Oct. 12.44 UT: m1=[13.3; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.45 UT: m1=14.3, Dia.=0.5′, DC=5; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan) [I could see it, probably because the moon was hidden by heavy clouds. Very tiny]
2013 Oct. 06.02 UT: m1=14.2, DC=3; 91cm F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 03.94 UT: m1=15.0, Dia.=0.2′, DC=7; 50.8cm refl. (307x); Sandor Szabo (Hungary) [Very compact, easy to see]
2013 Oct. 02.85 UT: m1=13.7, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Sep. 22.42 UT: m1=14.4 CCD, Dia.=0.9′, Tail=0.9′ in PA:194 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 14.29 UT: m1=14.5, Dia.=0.3′, DC=5; 45.7cm L f/4.2 (318x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Faint, averted vision necessary; formed a triangle with two 15.7 magnitude stars]
2013 Sep. 08.53 UT: m1=14.1: CCD, Dia.=&0.9′, Tail=0.6′ in PA:207 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 07.97 UT: m1=12.9 CCD + V filter, Dia.=0.7′, DC=6; 15cm L f/4 (14x30s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Software: IRIS. Comparison star 12.416+/-0.011mag with B-V=0.56 taken from PAASS]
2013 Sep. 07.20 UT: m1=14.4, Dia.=0.4′, DC=5; 30.5cm L f/4.9 (250x); Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA) [Faint; just able to detect with averted vision]
2013 Sep. 06.91 UT: m1=15.0, Dia.=0.4′, DC=2; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 Sep. 01.12 UT: m1=12.2, Dia.=1.5′, DC=3; 20cm SCT (160x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Observación realizada en mejores condiciones atmosféricas que la previa de Aug. 18.12 UT, percibiendo mayor diámetro de coma y con ello una m1 más brillante. Estrellas de campo comprobadas en el DSS. Estrellas de comparación tomadas de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña]
2013 Aug. 28.08 UT: m1=12.3, Dia.=1′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Aug. 25.00 UT: m1=12.3:, Dia.=1′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [Light polution]
2013 Aug. 18.12 UT: m1=14.0, Dia.=0.4′, DC=5; 20cm SCT (200x); Juan José González ( Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden del sector SA113. Cielo muy claro de montaña]
2013 Aug. 11.25 UT: m1=14.3, Dia.=0.4′, DC=5; 30.5cm L (250x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA)
2013 Aug. 08.91 UT: m1=14.6 CCD, Dia.=0.69′, Tail=1.7′ in PA 224 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Aug. 05.98 UT: m1=14.6, Dia.=0.7′, DC=4; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 Aug. 04.27 UT: m1=14.3, Dia.=0.3′, DC=6; 40.6cm L (305x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Easy to see]
2013 July 28.53 UT: m1=14.7: CCD, Dia.=&0.6′ Tail=0.9′ in PA 230 deg.; 0.43-m f/6.8 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 06.95 UT: m1=15.3, Dia.=0.4′, DC=3; 50.8cm L (307x); Sandor Szabo (Hungary) [Surprisingly easy comet with a 15.8 mag small central condensation]
2013 May  13.44 UT: m1=17.1 CCD; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)

C/2013 H2 (Boattini)
2013 May  10.94 UT: m1=17.6 CCD, Dia.=0.25′, Tail=0.6′ in PA 144 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 G9 (Tenagra)
2013 July 31.79 UT: m1=18.3 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 G5 (Catalina)
2013 July 08.88 UT: m1=[15.3 NEGATIVE; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 May  29.85 UT: m1=17.2: CCD, Dia.=0.87′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 G2 (McNaught)
2013 Aug. 02.80 UT: m1=17.8 CCD, Dia.=0.23′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 F3 (McNaught)
2013 Aug. 11.81 UT: m1=18.2 CCD, Dia.=0.3′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jun. 04.35 UT: m1=16.8 CCD, Dia.=0.26′, Tail=0.2′ in PA 316 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 May  05.36 UT: m1=16.1 CCD, Dia.=0.26′, Tail=0.3′ in PA 188 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)

C/2013 F1 (Boattini)
2013 May  10.81 UT: m1=18.0 CCD, Dia.=0.32′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 E2 (Iwamoto)
2013 Oct. 06.07 UT: m1=15.0, DC=4; 91cm F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 03.99 UT: m1=14.4, Dia.=1.2′, DC=4; 50.8cm refl. (189x); Sandor Szabo (Hungary)
2013 Sep. 26.51 UT: m1=13.8 CCD, Dia.=1.41′, Tail=1.4′ in PA:270 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 09.03 UT: m1=14.2 CCD, Dia.=0.4’; CCD images unfiltered; Stéphane Potvin (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 189-003745 mag.=15.00]
2013 Sep. 07.03 UT: m1=14.5, Dia.=0.7′, DC=4; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 Sep. 04.78 UT: m1=13.7 CCD, Dia.=1.71′, Tail=1.7′ in PA:271 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 11.98 UT: m2=15.6 CCD, Dia.=2.46′, Tail=3.8′ in PA 269 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Aug. 11.34 UT: m1=[14.4 Negative; 30.5cm L (250x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA) [Could not convincingly see comet; Able to see 8 galaxies within 30′ radius of comet’s position]
2013 Aug. 08.02 UT: m1=14.3, Dia.=0.8′, DC=5; 30cm L f/5 (167x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Motion checked over a 60-min period. Faintest star 15.3 mag in FOV]
2013 Aug. 06.02 UT: m1=14.7, Dia.=0.5′, DC=2; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 Aug. 04.34 UT: m1=14.2, Dia.=0.4′, DC=4; 40.6cm L (229x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Glad I was able to see this comet before it faded from view later in the year]
2013 Aug. 02.81 UT: m1=14.0 CCD, Dia.=1.00′, Tail=0.9′ in PA 265 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 14.39 UT: m1=13.3 CCD, Dia.=1.9′, Tail=2.4′ in PA 264 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 July 06.99 UT: m1=13.8, Dia.=0.7′, DC=3; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 Jun. 12.01 UT: m1=13.5, Dia.=1.0′, DC=3; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 May  17.73 UT: m1=13.1, Dia.=0.9’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very small and diffuse, averted vision]
2013 May  14.75 UT: m1=12.3, Dia.=2’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Cloud interference, averted vision, sky transparency average, zodiacal light interference, low contrast background sky]
2013 May  11.33 UT: m1=11.7, Dia.=2′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 May  10.77 UT: m1=12.1, Dia.=2.6’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Background sky was of low contrast due to Zodiacal light interference, small coma was visible using direct vision and outer coma was best visible using averted vision. Swan band filter weakly enhanced coma, no tail]
2013 Apr. 22.75 UT: m1=11.1, Dia.=3’, DC=3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Small central condensation, edges diffuse, enhances slightly using Swan Band filter, slight interference by zodiacal light, no tail. Comparison stars=TASS-4; Method=S; Cat=TA]
2013 Apr. 22.47 UT: m1=[12.0; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [negativa en 15cm]
2013 Apr. 20.16 UT: m1=10.8, Dia.=3′, DC=2/; 20cm SCT (100x); Juan Jose Gonzalez (Puerto de Aralla, alt. 1530 m, Leon, Spain) [Más brillante que lo previsto. Débil coma exterior]
2013 Apr. 12.48 UT: m1=[11.3; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [negativa en 15cm]
2013 Apr. 07.78 UT: m1=[12.3; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Ibaraki, JPAan) [negativa en 40cm]
2013 Mar. 23.35 UT: m1=11.0:, Dia.=2′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [Nautical twilight, sun altitude: -14º]
2013 Mar. 20.14 UT: m1=12.5, Dia.=0.6’, DC=5; 50.8cm L (250x); Sandor Szabo (Hungary) [Only some 12 deg above horizont, but well condensed. Motion was checked during 30 min period. LM in the field is 15.2 mag]

C/2013 E1 (McNaught)
2013 May  10.77 UT: m1=17.7 CCD, Dia.=0.25′, Tail=0.3′ in PA 137 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 D1 (Holvorcem)
2013 May  10.79 UT: m1=17.2: CCD, Dia.=&0.4′, Tail=0.3′ in PA 80 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

P/2013 CU129 (PANSTARRS)
2013 Aug. 27.39 UT: m1=13.2: CCD, Dia.=0.78′, Tail=4.5′ in PA 119 deg; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia)
2013 Aug. 03.37 UT: m1=13.2: CCD, Dia.=1.45′ Tail=4.5′ in PA 115 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 29.36 UT: m1=13.8: CCD, Dia.=1.13′, Tail=2.2′ in PA 116 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)

P/2013 A2 (Scotti)
2013 Jan. 16.87 UT: m1=19.0 CCD, Dia.=0.17′, Tail=0.2′ in PA 233 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2013 A1 (Siding Spring)
2013 Sep. 30.63 UT: m1=15.8 CCD, Dia.=0.27′, Tail=0.3′ in PA: 321 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)

C/2012 X2 (PANSTARRS)
2013 Feb. 07.87 UT: m1=18.2 CCD, Dia.=0.21′, Tail=0.1′ in PA 72 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 X1 (LINEAR)
2013 Dec. 31.53 UT: m1=8.5, Dia.=5′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [SQM=20.48, LM=6.2]
2013 Dec. 30.22 UT: m1=8.7, Dia.= 5′, DC=1; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 Dec. 30.19 UT: m1=8.8, Dia.=5′, DC=4/: 20×80 B; Marek Biely (Brno, Czech Republic) [Good sky helped to see larger coma diameter. Comet is brighter than last time]
2013 Dec. 25.53 UT: m1=8.8, Dia.=4′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [m1=9.0 with 3′ diameter coma in 30×125 B]
2013 Dec. 25.14 UT: m1=9.1, Dia.=4′, DC=4/; 20×80 B; Marek Biely (Brno, Czech Republic) [Brighter than last time, but it was problematic to see. Some high clouds and moonlight interference.]
2013 Dec. 16.18 UT: m1=9.3, Dia.=4′, DC=5; 20×80 B; Marek Biely (Brno, Czech Republic)
2013 Dec. 15.19 UT: m1=8.9, Dia.=4′, DC=4; 20cm SCT(50x); Carlos Labordena (Castellón, España)
2013 Dec. 14.86 UT: m1=9.4, Dia.=4′, DC=4; 26×100 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Dec. 10.23 UT: m1=9.2, Dia.=4.5′, DC=4, Tail: 0.20 deg in PA  305 deg.; 25×100 b; Jakub Cerny (España)
2013 Dec. 09.22 UT: m1=9.6, Dia.=4.5′, DC=4, Tail: 0.15 deg in PA  315 deg.; 25×100 b; Jakub Cerny (España)
2013 Dec. 08.22 UT: m1=9.4, Dia.=5.1′, DC=4/; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.23 UT: m1=9.4, Dia.=5.1′, DC=4; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.20 UT: m1=8.6, Dia.=3.5′, DC=3; 11×80 B; Carlos Labordena (España)
2013 Dec. 07.20 UT: m1=8.7 Dia.=4′, DC=4; 15cm STC (30x); Carlos Labordena (España)
2013 Dec. 07.18 UT: m1=9.6, Dia.=5.0′, DC=5; 25 cm L (33x); Sandor Szabo (Hungary) [Elliptical coma with 5’ tail to PA 320 deg.]
2013 Dec. 07.15 UT: m1=9.1, Dia.=4.5′, DC=4; 20×80 B; Marek Biely (Brno, Czech Republic) [About a bit more condensed than last time, but fainter. Heavy snow clouds interference]
2013 Dec. 06.55 UT: m1=[7.0; naked eye; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Dec. 05.24 UT: m1=8.8, Dia.=3′, DC=5; 25×100 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [En 20cm SCT (77x): coma de forma parabólica, latus rectum: 3.5′, Tail= 0.4º en PA: 320º]
2013 Dec. 05.21 UT: m1=9.3, Dia.=4.7′, DC=3/; 25×100 B; Jakub Cerny (España)
2013 Nov. 30.72 UT: m1=[7.8, NEGATIVE; 7-15×35 B (7x); Marek Biely (Brno, Czech Republic) [Fainter than 7.8 mag. No chance in this binocular.]
2013 Nov. 25.13 UT: m1=8.6, Dia.=6.5′, DC=2/; 20×80 B; Marek Biely (Brno, Czech Republic) [I observed it in extreme conditions. I started to observate it, but a light snow shower came and I had to wait for few minutes to observate it again. It is diffuse, but not too hard to see it. Heavy snow clouds and moonlight interference]
2013 Nov. 16.83 UT: m1=9.0, Dia.=3.5′, DC=1; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 14.53 UT: m1=8.5, Dia.=6′, DC=2; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 14.21 UT: m1=7.6, Dia.=9′, DC=2; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 13.22 UT: m1=8.8, Dia.=8′, DC=1; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 Nov. 12.17 UT: m1=8.2, Dia.=12′, DC=2; 25×100 B; Martin Lehky (Czech Republic)
2013 Nov. 12.15 UT: m1=8.2, Dia.=8′, DC=1/; 20×80 B; Marek Biely (Brno, Czech Republic) [Very diffuse.]
2013 Nov. 11.24 UT: m1=7.4, Dia.=13′, DC=2; 10×50 B; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, alt. 1140 m, León, España) [Coma elongada hacia PA 320º. Altura sobre el horizonte: 22º]
2013 Nov. 10.52 UT: m1=8.0, Dia.=10′, DC=1; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.81 UT: m1=8.6, Dia.=4.6′, DC=1/; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 08.52 UT: m1=7.7, Dia.=9′, DC=1; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.52 UT: m1=9.0, Dia.=10′, DC=1/; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: Not visible]
2013 Nov. 08.203 TU: m1=8.2, Dia.=4′, DC=2; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 08.15 UT: m1=8.5, Dia.=10′, DC=2; 10×50 B; Timo Karhula (Åkesta Observatory, Västerås, Sweden)
2013 Nov. 08.14 UT: m1=7.9, Dia.=8.5′, DC=3; 15×80 B; Sandor Szabo (Sieggraben, Austria)
2013 Nov. 07.52 UT: m1=7.3, Dia.=14′, DC=1; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 06.23 UT: m1=7.5, Dia.=13′, DC=2; 10×50 B; Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1220 m, Asturias, España) [Coma elongada en PA 320º. Altura sobre el horizonte: 20º]
2013 Nov. 06.204 TU: m1=8.3, Dia.=4′, DC=2; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 04.51 UT: m1=7.5, Dia.=10′, DC=2; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 03.215 TU: m1=8.2, Dia.=4′, DC=2; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 03.213 TU: m1=8.5, Dia.=4′, DC=2; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Nov. 01.72 UT: m1=8.0, Dia.=8′, DC=3, 25×100 B; Timo Karhula (Sweden) [Low altitude, 9º]
2013 Nov. 01.51 UT: m1=7.6, Dia.=13′, DC=1; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 01.15 UT: m1=8.1, Dia.=&8′, DC=3; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Easily visible. Coma brighter with better defined edge on SE side]
2013 Nov. 01.15 UT: m1=8.3, Dia.=8′, DC=3; 32.6cm L (50x); Piotr Guzik (Przełęcz Szklarska, Poland) [Very large and quite diffuse. Star-like pseudonucleus, m2~13, immersed in disk-like central condensation of mag ~11 and a smaller than 1′ across. All of that was surrounded by much larger coma that was sharply defined on SE edge and PAparently brighter on SE side. On the other hand NW edge was very ill-defined, and NW side of coma was definitely fainter. Additionaly faint, straight tail-like feature ~4′ long in p.a. ~330 deg could also be seen with averted vision]
2013 Oct. 31.24 UT: m1=8.1, Dia.=8′, DC=3; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20cm SCT (77x): m1=8.3. En evolución después del reciente outburst. Coma en forma de disco, con borde bien definido en dirección solar y progresivamente más difuso en sentido opuesto. Se percibe una estructura radial, similar a una Tail, en PA 330º, extendiéndose 0.10º desde la condensación central. Crepúsculo astronómico. Altura sobre el horizonte: 21º]
2013 Oct. 31.23 UT: m1=8.6, Dia.=6′, DC=1; 32cm L f/5 (48x); Uwe Pilz (Leipzig, Germany)
2013 Oct. 31.18 UT: m1=7.7, Dia.=9′, DC=2; 25×25 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 31.16 UT: m1=8.2, Dia.=&8′, DC=2; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Only faintly see]
2013 Oct. 31.15 UT: m1=8.5, Dia.=7′, DC=2; 32.6cm L (50x); Piotr Guzik (Przełęcz Szklarska, Poland) [Very large, diffuse. Some moonlight interference]
2013 Oct. 30.52 UT: m1=7.7, Dia.=7′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 29.73 UT: m1=7.0, Dia.=12′, DC=4; 16×70 B; Uwe Pilz (Leipzig, Germany)
2013 Oct. 29.22 UT: m1=8.0, Dia.=8′, DC=3; 40.7cm L (58x); NiTails Biver (Ablis, France) [getting large with brighter core]
2013 Oct. 29.15 UT: m1=8.1, Dia.=8′, DC=2; 15×80 B; Sandor Szabo (Boly, Hungary)
2013 Oct. 28.212 TU: m1=9.3, Dia.=3′, DC=2; 20cm SCT (80x); Carlos Labordena (Castellón, España)
2013 Oct. 27.50 UT: m1=8.3, Dia.=6′; 41cm L; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 27.19 UT: m1=8.1, Dia.=~7′, DC=1; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [possible underestimated due to moonlight, Last Quarter]
2013 Oct. 23.45 UT: m1=8.1, Dia.=3.3′, DC=3; 30.5cm f/4.9 reflector (115x); Todd Augustyniak (Bartlett, Illinois, USA) [Noticeably more diffuse than on Oct. 22.  Surface brightness is less and comet isn’t as visually striking, but still relatively easy to see through 30.5 cm telescope.  Bright moonlight interference and low elevation (comet 14.5 degrees above horizon; sun 16.75 below horizon)]
2013 Oct. 23.14 UT: m1=8.2, Dia.=3′, DC=5; 10×50 B; Piotr Guzik (Biórków Mały, Poland) [Easily visible in binoculars thanks to excellent transparency. Bright moonlight]
2013 Oct. 23.14 UT: m1=8.2, Dia.=2.5′, DC=5; 32.6cm L (50x); Piotr Guzik (Biórków Mały, Poland) [Very bright, round, well condensed object]
2013 Oct. 22.50 UT: m1=8.2, Dia.=3′, DC=3/4; 41cm L (70x); Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 22.45 UT: m1=7.8, Dia.=3′, DC=4; 30.5 cm f/4.9 reflector (150x); Todd Augustyniak (Bartlett, Illinois, USA) [Quite bright with good size.  Easily seen despite moonlight interference and low altitude (comet 14.25 degrees above horizon; sun 16.5 below horizon).  Reminded me of a moderately bright unresolved globular cluster with faint outer edge gradually brightening towards center. False nucleus not visible]
2013 Oct. 22.22 UT: m1=8.3, Dia.=3′, DC=5; 40.7cm L (58x); NiTails Biver (Versailles, France) [in twilight but still fairly easy to see]
2013 Jun. 05.16 UT: m1=16.2 CCD, Dia.=0.27′; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 Apr. 30.80 UT: m1=16.5 CCD, Dia.=0.50′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Apr. 29.13 UT: m1=16.5 CCD, Dia.=0.42′; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Feb. 07.93 UT: m1=17.1 CCD, Dia.=0.5′, Tail=0.6′ in PA:244 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 V2 (LINEAR)
2013 Dec. 12.30 UT: m1=10.9, Dia.=1.5′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Dec. 07.70 UT: m1=11.6, Dia.=1.2’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and almost even in brightness across coma, outer coma edge transparent, no tail, close to 13th mag star]
2013 Dec. 05.70 UT: m1=11.7, Dia.=0.9’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Crowded star field, coma small, almost uniform in brightness across coma, no tail]
2013 Nov. 15.27 UT: m1=11.0, Dia.=3′, DC=5; 27cm L F/5; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 05.29 UT: m1=10.7:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Nov. 03.75 UT: m1=10.2, Dia.=2′, DC=4; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Nov. 03.74 UT: m1=9.8, Dia.=4′; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 02.70 UT: m1=10.2: Dia.=2.8’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Crowded star field, tail not noticeable, diffuse outer coma with small bright central condensation]
2013 Oct. 31.75 UT: m1=9.9, Dia.=3′, DC=5; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia)
2013 Oct. 31.71 UT: m1=9.9, Dia.=3.3’, DC=5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Star in coma, enhances in Swan Band filter, tail 5.2’ in length in P.A. 247, very faint.]
2013 Oct. 29.30 UT: m1=10.3, Dia.=2′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 24.72 UT: m1=10.7, Dia.=1.9’, DC=5; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, outer coma very faint. Inner half of coma brighter and circular in PApearance with a small and almost stellar central condensation]
2013 Oct. 20.30 UT: m1=9.5:, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Oct. 15.73 UT: m1=9.1, Dia.=2′; 25×100 B; David A. J. Seargent (The Entrance, NSW, Australia) [More clearly visible through Swan Band filter. It now seems to be more enhanced through filter than it was in Aug. & Sept.]
2013 Oct. 12.76 UT: m1=8.9, Dia.=3′, DC=6; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria)
2013 Oct. 12.31 UT: m1=9.8, Dia.=2.6’, DC=2/3; 25cm L f/4.5 (66x); Gonzalo Vargas (Cochabamba Bolivia) [magnitud límite visual 6.0 PArox. Poca interferencia de nubes]
2013 Oct. 10.31 UT: m1=9.5:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Oct. 09.72 UT: m1=9.0, Dia.=4′; 25×100 binoculars; David A. J. Seargent (The Entrance, NSW, Australia) [More clearly visible through Swan Band filter.
2013 Oct. 09.69 UT: m1=9.0, Dia.=5.7’ DC=3/4; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma, no tail, averted vision. Coma shows slightly compact central condensation. Averted vision, comet was 16° altitude at time of obs]
2013 Oct. 09.30 UT: m1=9.3, Dia.=3′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 08.75 UT: m1=8.9, Dia.=3′, DC=6; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria) [Moderately condensed coma. Comet PApears brighter than anticipated. In a 20cm reflector, a short dust tail is visible 6′ long in PA 260]
2013 Oct. 08.31 UT: m1=9.0, Dia.=2′.5, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 07.30 UT: m1=8.9, Dia.=3′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 06.32 UT: m1=9.1:, Dia.=3′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2013 Oct. 05.32 UT: m1=9.0, Dia.=3′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 04.72 UT: m1=8.4, Dia.=10.4’, DC=3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma, no tail]
2013 Oct. 03.70 UT: m1=10.0, Dia.=3.5′, DC=6/; 30cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia) [Coma brighter in the centre, with very faint outer edges, seen better with averted vision. Tail to SW 8’in length with averted vision]
2013 Sep. 29.74 UT: m1=8.7, Dia.=7.2’, DC=5; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, no tail, small condensed inner coma. Moonlight]
2013 Sep. 28.76 UT: m1=9.2, Dia.=3.7’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Tail to the West PAprox., 13’ in length, very faint and tenuous. Coma has faint edges, gradually brightening to centre with small stellar central condensation]
2013 Sep. 28.32 UT: m1=9.0:, Dia.=3′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Sep. 27.32 UT: m=9.1, Dia.=2′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Sep. 24.75 UT: m1=8.9, Dia.=3’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma diffuse with slightly brighter central condensation, coma elongated to the West PAproximately, using averted vision. Coma enhances using Swan Band filter]
2013 Sep. 11.80 UT: m2=11.3 CCD, Dia.=&4′, Tail=6.7′ in PA:264 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 11.75 UT: m1=9.0, Dia.=3.4’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma bright with almost stellar central condensation, enhances using Swan Band filter. Tail 5.5’ in length in P.A. 264°. Very tenuous at the extremities of the tail and was best observed using averted vision and no wider than 4’.]
2013 Sep. 04.77 UT: m1=8.9, Dia.=3′; 25×100 B; David A. J. Seargent (The Entrance, NSW, Australia) [Somewhat enhanced through Swan Band filter]
2013 Sep. 03.32 UT: m1=9.3, Dia.=3’, DC=3; 25cm L (45x); Gonzalo Vargas (Cochabamba, Bolivia) [Magnitud limite visual 6.0, color cometa celeste débil]
2013 Aug. 30.34 UT: m=9.0, Dia.=3′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Aug. 29.35 UT: m=9.2, Dia.=4′, DC=4/; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Aug. 29.34 UT: m1=8.9, Dia.=3´, DC=3; 25cm L (45x); Gonzalo Vargas (Cochabamba, Bolivia) [Interferencia de luz de la Luna, magnitud límite visual 5.0]
2013 Aug. 27.33 UT: m1=8.8, Dia.=4’, DC=4; 25cm L (45x); Gonzalo Vargas (Cochabamba, Bolivia) [Algo de interferencia de luz de la Luna, magnitud límite visual 6.0]
2013 Aug. 24.36 UT: m1=9.1:, Dia.=4′, DC=3/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [Nautical twilight, comet altitude: 21º, moonlight interference, clouds]
2013 Aug. 23.35 UT: m1=8.7, Dia.=3′, DC=5; 10cm R (25x); Willian Souza (Sao Paulo, Brazil)
2013 Aug. 17.36 UT: m1=8.7, Dia.=4′, DC=4; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [Nautical twilight, comet altitude: 18º]
2013 Aug. 16.36 UT: m=8.5:, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [nautical twilight]
2013 Aug. 15.79 UT: m1=9.5, Dia.=1.6’, DC=5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Close to bright star making obs difficult. Slightly affected by twilight]
2013 Aug. 15.36 UT: m1=8.7, Dia.=4′, DC=3; 20×100 B; Marco Goiato (Araçatuba, Brasil) [Astronomical twilight, comet altitude: 16º]
2013 Aug. 15.35 UT: m=8.5, Dia.=3′, DC=5; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Aug. 14.77 UT: m1=9.4, Dia.=2.5’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma bright with even brightness across most of the diameter, faint edges and slightly elongated to the North, small central condensation PApears stellar sometimes. Observed at 8 degrees Altitude, close to bright star (6.4), no tail, inner coma enhances using Swan Band filter]
2013 Aug. 13.35 UT: m=8.7:; 20.3cm SCT (62x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Aug. 12.80 UT: m1=8.6, Dia.=4′, DC=5; 25×100 B; David A. J. Seargent (The Entrance, NSW, Australia) [Low elevation. Somewhat enhanced through Swan Band filter]
2013 Aug. 12.36 UT: m=8.7, Dia.=2′, DC=4; 20.3cm SCT (62x); Alexandre Amorim (Florianopolis, Brazil)
2013 Aug. 11.36 UT: m1=8.7:, Dia.=3′, DC=5; 20.3cm SCT (62x); Alexandre Amorim (Florianopolis, Brazil)
2013 Aug. 10.80 UT: m1=9.2, Dia.=2.5′, DC=5/; 20cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia)
2013 Aug. 09.82 UT: m1=8.9, Dia.=3′, DC=6; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria)
2013 Apr. 13.81 UT: m1=14.4, Dia.=0.5’, DC=4; 50.8cm reflector (250x) Sandor Szabo (Hungary) [I have tried several times in previous months without success. Now surprisingly easy to see, motion was confirmed in 20 min. period]
2013 Jan. 11.83 UT: m1=[15.0, NEGATIVE; 50.8cm L (307x); Sandor Szabo (Hungary) [Not seen, must be fainter than 15.0 mag]

C/2012 T5 (Bressi)
2013 Feb. 06.44 UT: m1=10.6, Dia.=3′, DC=3; 25.4cm L (71x); David A. J. Seargent (Cowra, NSW, Australia) [Significantly fainter and more diffuse. Somewhat enhanced using Swan Band filter, possibly more near centre of coma]
2013 Feb. 04.44 UT: m1=9.0; Dia.=2′, DC=4, tail= 0.05 degrees; pa=97°; 25.4cm L (71x); David A. J. Seargent (Cowra, NSW, Australia) [Easily visible. Quite strongly enhanced using Swan band filter]
2013 Feb. 10.96 UT: m1=10.7:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 08.43 UT: m1=10.5, Dia.=2.4’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SE, enhances inner coma with Swan Band filter. At 83x the elongation PApears to be bar-like in the direction of the elongation. Method=M; Cat=AU]
2013 Feb. 06.47 UT: m1=10.8, Dia.=2′, DC=3; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Feb. 05.98 UT: m1=10.0 (S), Dia.=2′, DC=5; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [clouds, central condensation]
2013 Feb. 05.47 UT: m1=10.5, Dia.=2′, DC=3; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Feb. 05.44 UT: m1=9.7, Dia.=2’, DC=5/6; 25cm L f:5 (39x); [Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to the East, gradual brightening to centre, moderately condensed. Inner coma enhances slightly in Swan Band filter. Method=M; Cat=TK]
2013 Feb. 05.10 UT: m1=10.4, Dia.=3.5′, DC=3; 25×100 B; Will Godward (Moonta, South Australia, Australia) [comparison stars checked using Guide 8. Seeing conditions very good]
2013 Feb. 04.47 UT: m1=9.2, Dia.=2′, DC=6; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Feb. 04.455 UT: m1=10.2, Dia.=1′, DC=4; 11.4cm f/8 refl (43x); Rob Kaufman (Bright, Victoria, Australia) [Small diffuse patch, brightening in centre in averted vision, no tail visible. Ref=NOMAD1 data in ViZier; Method=M. Smoke haze]
2013 Feb. 04.45 UT: m1=10.1, Dia.=1.0′, DC=3/; 20cm Dobson; Con Stoitsis (Clonbinane, Victoria, Australia) [More condensed towards the centre when using averted vision]
2013 Feb. 03.04 UT: m1=11.4 CCD, Dia.=1.6′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 02.458 UT: m1=10.6, Dia.=1.5′, DC=3; 11.4cm f8 refl (43x); Rob Kaufman (Bright, Victoria, Australia) [Small diffuse patch, slight brightening towards centre, no tail visible. Ref= NOMAD1 data in ViZier; Method=M]
2013 Jan. 31.97 UT: m1=10.5:, DC=8; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 03.47 UT: m1=9.5, Dia.=2′, DC=6; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Feb. 02.47 UT: m1=9.8, Dia.=2′, DC=6; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Jan. 31.42 UT: m1=10.5, Dia.=2.2’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, diffuse inner coma fading to a thin transparent outer coma, at x83 the central condensation PApears elongated to WSW. Method=M; Cat=TK]
2013 Jan. 30.43 UT: m1=10.5, Dia.=2.5’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma slightly elongated to WSW to ENE, no tail, tenuous outer coma weakly brightening to a faint stellar pseudo nucleus. Method=M; Cat=TK]
2013 Jan. 29.42 UT: m1=10.4, Dia.=1.8’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Small pseudo nucleus visible in good seeing, coma gradually brightens to centre with weak centre. No tail, enhances inner coma with Swan Band filter. At x83 the coma PApears circular. Moonlight interference. Method=M; Cat=TK]
2013 Jan. 29.04 UT: m1=12.6 CCD, Dia.=0.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 18.00 UT: m1=11.6 (S), Dia.=1.5′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [moonlight interference]
2013 Jan. 13.81 UT: m1=10.8, Dia.=5′, DC=1/; 20cm SCT (100x); Juan José Gonzalez (Alto de la Garandilla – Escuredo, alt. 1150 m, León, España)
2013 Jan. 11.98 UT: m1=11.9 (S), Dia.=1.5′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Jan. 07.77 UT: m1=12.1, Dia.=3′, DC=1, no Tail; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2013 Jan. 06.11 UT: m1=17.2 CCD, Dia.=0.4′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 03.85 UT: m1=12.0, Dia.=3.5′, DC=1/; 20cm SCT (100x); Juan José González (Aralla, alt. 1440 m, León, España) [Coma muy difusa. Estrellas de campo comprobadas en el DSS. Cielo muy claro de montaña]

C/2012 S4 (PANSTARRS)
2013 Oct. 12.91 UT: m1=16.8 CCD, Dia.=0.3′ Tail=0.4′ in PA 41 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 S3 (PANSTARRS)
2013 Aug. 05.92 UT: m1=15.0, Dia.=0.3′, DC=2; 50.8cm L (307x); Sandor Szabo (Hungary) [Motion was checked]
2013 Aug. 04.23 UT: m1=15.6, Dia.=0.2′, DC=5/; 40.6cm L (305x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Faint; 16.0 magnitude star visible 10″ to NE of comet]
2013 July 29.43 UT: m1=14.4: CCD, Dia.=&0.8′, Tail=0.6′ in PA 30 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 09.012 UT: m1=15.7, Dia.=0,3′, DC=s4; 102cm RC telescope (338x); Gábor Sánta and Krisztián Sárneczky (Piszkéstető Observatory, Hungary) [disc-like coma with a nucleus (17,0) and diffuse edges]
2013 July 08.97 UT: m1=15.5, Dia.=0.2’, DC=6; 50.8cm L (490x); Sandor Szabo (Hungary) [Faint, but can be seen. Motion was checked during a 15 min. period.]
2013 July 08.37 UT: m1=15.0 CCD, Dia.=0.66′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 July 06.97 UT: m1=15.4, Dia.=0.3′, DC=2; 50.8cm L (307x); Sandor Szabo (Hungary) [Easy to see, small round disk]

C/2012 S1 (ISON)
2013 Dec. 16.19 UT: m1=[10.1, NEGATIVE; 20×80 B; Marek Biely (Brno, Czech Republic) [Fainter than 10.1 mag. I didn´t see any remnant of this comet. Probably it is already too faint.]
2013 Dec. 10.24 UT: m1=[9.9, Dia.=9′; 25×100 B; Jakub Cerny (España)
2013 Dec. 09.25 UT: m1=9.6:, Dia.=9.1′, DC=1/; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.26 UT: m1=[7.6, Dia.=5′; 25×100 B; Jakub Cerny (España)
2013 Dec. 07.20 UT: NEGATIVE, not seen ;25cm L (125x); Sandor Szabo (Hungary) [The area of the predicted position is scanned, but no any remnant could be confirmed]
2013 Dec. 07.26 UT: m1=7.2, Dia.=10′, DC=1/; 20cm SCT (77x); Juan José González (Cueto Rosales, alt. 1420 m., León, España) [Lo que puede percibirse del cometa en el post-perihelio muestra visualmente un área elíptica de 10′ de eje mayor, con un grado de condensación algo superior al resto, con centro PAroximado en A.R.=16h11m.8, Decl.=-1o45′.0, a una separación del orden de 20′ respecto a las efemérides calculadas con elementos orbitales previos al perihelio. Eran observables dos débiles estructuras en forma de Tail, teniendo 0.3º de longitud en A.P. 310 la mejor definida, PAareciendo la otra como más corta y dirigida hacia A.P. 180º. Estrellas de campo comprobadas en el DSS. Estrellas de comparación situadas a la misma baja altitud (7º) que el cometa. Observación realizada desde ubicación de montaña con muy buen seeing y transparencia, hasta el nivel del horizonte]
2013 Dec. 06.192 UT: m1=7.5, Dia.=~15′, DC=0/; 10×50 & 15×70 B; Piotr Guzik (Krosno, Poland)
2013 Nov. 28.69 UT: m1=[-4.0; 10×50 B; Alexandre Amorim (Florianópolis, Brazil)
2013 Nov. 28.56 UT: m1=[-2.0:; 20cm L (48x); Jure Atanackov (Krvavec, Slovenia)
2013 Nov. 28.48 UT: m1=[-3.0:; 11×70 B; Jure Atanackov (Krvavec, Slovenia)
2013 Nov. 28.33 UT: m1=[-4.0:; 10×50 B; Juan José González (Cueto Rosales, 1420 m alt., León, España ) [ Intento negativo de observación después del orto solar, con el cometa situado a muy baja altura sobre el horizonte : 5º. Cielo muy claro de montaña]
2013 Nov. 25.29 UT: m1=[3.5:*; 10×50 B; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, 1140 m alt., León, España) [Cometa no observado. Muy baja altura sobre el horizonte (4º). Magnitud límite corregida por extinción atmosférica mediante la tabla ICQ de invierno. Cielo muy claro de montaña]
2013 Nov. 24.66 UT: m1=[3.0; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Moonlight, twilight, low altitude. Comp star alpha-Libra. Comet not seen.]
2013 Nov. 24.26 UT: m1=[4.0; 10×50 B; José J. Chambó (La LLosa de Ranes, Valencia, España) [Moonlight, Twilight, Low altitude: 5º]
2013 Nov. 23.26 UT: m1=4.6*, Dia.=–, DC=8/, Tail= 0.7º en PA: 280º; 10×50 B; Juan José González (Andarraso, alt. 1470 m, León, España) [PAariencia casi estelar. Muy baja altura sobre el horizonte (5º). Comienzo del crepúsculo náutico. Magnitud corregida por extinción atmosférica mediante la tabla ICQ de invierno. El menor diámetro de coma PAarente percibido (observado a baja altura en el crepúsculo) podría ser la causa de la estimación de una m1 más débil en comparación con la realizada previamente (Nov. 21.25 UT: m1=3.8; Dia.=2′). Cielo muy claro de montaña]
2013 Nov. 22.24 UT: m1=4.0, Dia.=-, DC=7; 10×50 B; José J. Chambó (La LLosa de Ranes, Valencia, España) [Moonlight, Low altitude: 5º corrected for extinction]
2013 Nov. 22.24 UT: m1=3.7, Dia.=3, DC=8, Tail= 50′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 21.87 UT: m1=3.7*, Dia.= -, DC=7/; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Nov. 21.52 UT: m1=3.9*; 10×50 B; Alan Hale (Cloudcroft, New Mexico, USA) [PApeared almost stellar, with a faint, filmy tail 1.5 degrees long. I perhPAs suspected it naked-eye, but couldn’t quite convince myself I was seeing it]
2013 Nov. 21.46 UT: m1=3.5, DC=7; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 21.32 UT: m1=3.7*, Dia.=3′, DC=8, Tail: 0.2 degrees in PA 280 degrees; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, civil twilight, clouds]
2013 Nov. 21.31 UT: m1=3.9*, Dia.=5′, DC=7, Tail: 0.5 degrees in PA 280 degrees; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 7 degrees, nautical twilight, clouds]
2013 Nov. 21.31 UT: m1=4.0, Dia.=2′, DC=7; 10x50B; Maciel Sparrenberger (Brasília, Brasil)
2013 Nov. 21.31 UT: m1=4.2*, Dia.=3′, DC=8, Tail: 0.3 degrees in PA 280 degrees; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 7 degrees, nautical twilight, clouds]
2013 Nov. 21.29 UT: m1=4.5, Dia.=–, DC=6; 7×50 B; João Amâncio (Lagoa Santa/MG, Brasil)
2013 Nov. 21.25 UT: m1=3.8, Dia.=2′, DC=8/, Tail: 1.5º en PA 290º; 10×50 B; Juan José González (Aldeanueva de Figueroa, 910 m alt., Salamanca, España) [PAariencia casi estelar. Muy baja altura sobre el horizonte: 7º. Interferencia lunar. Ubicación rural, buenas condiciones atmosféricas]
2013 Nov. 21.233 UT: m1=4.1, Dia.=3, DC=8, Tail= 30′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 20.86 UT: m1=3.8*, Dia.= -, DC=7/; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Nov. 20.52 UT: m1=[4.4; naked eye; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 20.49 UT: m1=4.8, Dia.=1.5′, DC=7/; 10×50 B; Todd Augustyniak (Bartlett, Illinois, USA)
2013 Nov. 20.41 UT: m1=4.0, DC=7; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 20.31 UT: m1=4.5, Dia.=2′, DC=7; 10×50 B; Maciel Sparrenberger, Brasilia/DF, Brasil) [moonlight, light pollution, nautical twilight]
2013 Nov. 20.222 UT: m1=4.7, Dia.=4′, DC=8, Tail= 25′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 20.22 UT: m1=5.0, Dia.=-, DC=6; 20×60 B; José J. Chambó (La LLosa de Ranes, Valencia, España) [Moonlight, Low altitude: 7º corrected for extinction]
2013 Nov. 19.88 UT: m1=5.3, Dia.=1′, DC=7, Tail=3´ in PA: 294 deg.; 11X80 B; Angelito Sing (Makati, Philippines) [Pseudo-nucleus seems somewhat elongated a bit i nthe 25X100B]
2013 Nov. 19.53 UT: m1=5.2, Dia.=3′, DC=8; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 0.5 deg long in p.a. 290 deg]
2013 Nov. 19.51 UT: m1=[4.2; naked eye; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Nov. 19.48 UT: m1=5.0, Dia.=2′, DC=8; 10×50 B; Todd Augustyniak (Bartlett, Illinois USA) [Strongly condensed core.  Easier to see than previous morning despite lower elevation. Tail visible 15′ PA 280 degrees. Followed well into bright twilight]
2013 Nov. 19.31 UT: m1=4.8, Dia.=5′, DC=6; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, sun altitude: -13 degrees, nautical twilight]
2013 Nov. 19.31 UT: m1=4.9, Dia.=3′, DC=7/, Tail: 0.3 degrees in PA 290 degrees; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, sun altitude: -13 degrees, nautical twilight]
2013 Nov. 19.30 UT: m1=5.2, Dia.=5′, DC=7; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Nov. 19.30 UT: m1=5.6: CCD; dSRL-70;  Ednilson Oliveira (São Paulo/SP, Brasil)
2013 Nov. 19.18 UT: m1=5.0*, Dia.=&4′, DC=7; 7×50 B; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Twilight, comet alt. 9.1 deg. – extinction corrected using winter ICQ tables; Cat.(TK)]
2013 Nov. 18.85 UT: m1=5.2, Dia.= –’, DC=7; 8×42 B; Katsumi Yoshimoto (Yamaguchi, JPAan)
2013 Nov. 18.75 UT: m1=5.8, Dia.=2.0′, DC=5;  11×70 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Comet is obviously fainter than my previous observation which was PAprox a day after outburst. Very hard to pick up against strong morning twilight, Really only visible with averted vision. Low elevation, less than 5 degs above the horizon I couldn’t detect the tail]
2013 Nov. 18.74 UT: m1=5.7, Dia.=5’ DC=5/6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse with small central condensation. Bright moonlight and twilight interference, low alt – 9.6°. Lost sight of comet through 11×70 B’s at 18.75 UT. Coma diameter is PAproximate]
2013 Nov. 18.74 UT: m1=5.8, Dia.=3′, DC=7; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Possible trace of tail to SW glimpsed]
2013 Nov. 18.552 UT: m1=5.4, Dia.=1.5′, DC=7; 7cm R (25x); Anthony J. Cook (Pasadena, CA, USA) [Sky clear but bright due to bright moonlight and nautical twilight]
2013 Nov. 18.53 UT: m1=5.4, Dia.=3′, DC=8; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail: 0.3 deg. long. in p.a. 280 deg.]
2013 Nov. 18.47 UT: m1=5.3, Dia.=2.5′, DC=7, 20×80 B; Todd Augustyniak (Bartlett, Illinois, USA)
2013 Nov. 18.29 UT: m1=5.2, Dia.=8′, DC=7/; 11X80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 17.86 UT: m1=5.5, Dia.=1′, DC=7, Tail=2′ in PA: 295 deg.; 25X100 B; Angelito Sing (Makati, Philippines)
2013 Nov. 17.42 UT: m1=5.2, DC=7; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 17.32 UT: m1=4.7, Dia.=3′, DC=7; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 16 degrees, sun altitude: – 10 degrees (civil twilight), clouds]
2013 Nov. 17.31 UT: m1=4.9, Dia.=1′, DC=7/; 7cm R (35x); Lucas Camargo da Silva (São José/SC, Brasil)
2013 Nov. 17.31 UT: m1=5.0*, Dia.=3’, DC=7, Tail: 15’ en PA 300º; 20cm SCT (40X); Alberto Anunziato (Paraná, Argentina) [corrección por extinción atmosférica, 7º sobre el horizonte]
2013 Nov. 17.30 UT: m1=5.0, Dia.=3′, DC=7; 25x100B; Paulo Régis (Paramoti/CE, Brasil)
2013 Nov. 17.21 UT: m1=5.1, Dia.=3′, DC=8, Tail=70′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 17.19 UT: m1=5.0, Dia.=–, DC=8; naked eye; Jakub Cerny
2013 Nov. 17.19 UT: m1=5.2, Dia.=5′, DC=7, Tail= 1.9 deg. in PA 290 deg.; 25×100 B; Jakub Cerny
2013 Nov. 17.18 UT: m1=5.1, Dia.=5′, DC=8; 8×40 B; Jakub Cerny
2013 Nov. 16.83 UT: m1=5.8, Dia.=-, DC=9; 10×70 R; Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 16.82 UT: m1=6.3, Dia.=-, DC=8; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 16.73 UT; m1=6.2, Dia.=4’, DC=5/6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight and Twilight affected. Coma PApears circular and slightly elongated to WSW (P.A. 290) showing a small and sometimes stellar central condensation, tail is not obvious and hard to detect. Low altitude – 7.8°. Observed using 7×50 B’s as well, I lost sight of the coma at around 5:05am AEDST (16.75 UT) in deep twilight]
2013 Nov. 16.65 UT: m1=5.7, Dia=3′, DC=8, Tail 15′ in pa: 280°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [SQM-L: 19.0, Comps TYC5537-1459-1 5.56, TYC5537-1390-1 6.30, Tycho2+Bessell corrections. Comet getting low in early twilight, tail difficult. Coma very compact now.]
2013 Nov. 16.45 UT: m1=5.7, Dia.=3′, DC=7; 7×50 B; Han Chen (Fairfax, Virginia, USA) [It rained during midnight and there were some fractostratus and stratocumulus left. The tail was not seen in twilight. SQM-L read 16.45 when pointed at the comet.]
2013 Nov. 16.41 UT: m1=5.4, Dia.=4′, DC=3; 10×50 B; John D. Sabia (South Abington Township, Pennsylvania, USA)
2013 Nov. 16.32 UT: m1=4.7, Dia.=3′, DC=8/9; 15×70 B; Mariano Ribas (Buenos Aires, Argentina)
2013 Nov. 16.29 UT: m1=6.1; 10x50B; Saulo Machado Filho (Fortaleza/CE, Brasil)
2013 Nov. 16.27 UT: m1=6.0, Dia.=3.5′, DC=2; 15cm L (70x); Leonardo Barbosa (Olinda/PE, Brasil)
2013 Nov. 16.26 UT: m1=5.7: CCD; dSLR-70; Ednilson Oliveira (São Paulo/SP, Brasil)
2013 Nov. 16.22 UT: m1=5.3, Dia.=9′; 20×80 B; Sandro Baroni (Milano, Italia)
2013 Nov. 15.91 UT: m1=5.0, Dia.=4.5′, DC=8; 20cm L; Man-T. Hui (Nhut Thong Pau, Canton, China) [city lights, twilight; 0.7-deg tail in p.a. 295 deg.]
2013 Nov. 15.44 UT: m1=4.8, Dia.=1.5′, DC=8; 7×50 B; Han Chen (Fairfax, Virginia, USA) [thin stratocumulus interfered, tail was not seen. Comet disPApeared in twilight at 15.458 UT, when the sun was 10.5° below the horizon.]
2013 Nov. 15.31 UT: m1=4.8, Dia.=6′, DC=7/, Tail: 1 degree in PA 290 degrees; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 14 degrees, sun altitude: – 13 degrees (nautical twilight), atmospheric extinction PAplied]
2013 Nov. 15.31 UT: m1=4.8, Dia.=–, DC=9; naked eye; Marco Goiato (Araçatuba, Brasil) [comet altitude: 14 degrees, sun altitude: – 13 degrees (nautical twilight), atmospheric extinction PAplied]
2013 Nov. 15.30 UT: m1=4.8, Dia.=1′, DC=8/; 7cm R (35x); Lucas Camargo da Silva (São José/SC, Brasil)
2013 Nov. 15.29 UT: m1=5.1, Dia.=4′, DC=7; 7x50B; Dennis Weaver (Paramoti/CE, Brasil) [condensação de aspecto estelar, cor pálido esverdeado, cauda em V em ângulo fechado]
2013 Nov. 15.29 UT: m1=5.5, Dia.=2′, DC=8; 25x100B; Paulo Régis (Paramoti/CE, Brasil)
2013 Nov. 15.29 UT: m1=5.2, Dia.=6′, DC=6/: 11X80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 14.76 UT: m1=5.5, Dia.=3′; DC= 7; 10×50 B; Rob Kaufman (White Cliffs, NSW, Australia) [Tail not visible in strong twilight. Extended object with bright central condensation. Comet at 9-deg altitude]
2013 Nov. 14.71 UT: m1=5.3, Dia.=–; DC=8; 7×50 B: Chris Wyatt (Walcha, NSW, Australia) [Faint tail 30’ in length in P.A. 295 PAproximately, very bright stellar central condensation with very faint outer coma. Enhances very strongly in Swan Band filter. Visible naked eye at 14.72 UT although very faintly and difficult to get estimate, it PApeared stellar. Low alt – 5° for binocular obs, and 7.6° when naked eye. Twilight interfered not long after, I lost visual sighting of comet through the binoculars at 14.74 UT deep in twilight]
2013 Nov. 14.552 UT: m1=5.8, Dia.=1.25′, DC=7; 7cm R (20x); Anthony Cook (Pasadena, CA, USA)
2013 Nov. 14.52 UT: m1=5.7, Dia.=2′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [tail 1.2 deg long in p.a. 290 deg]
2013 Nov. 14.43 UT: m1=5.8, Dia.=1.5′, DC=8, Tail length= 10′ in PA=300°; 7×50 B; Han Chen (Fairfax, Virginia, USA) [quite dense, stellar-like that couldn’t tell the difference at a glance. Still easily found, without using averted vision. The green color was readily detectable]
2012 Nov. 14.41 UT: m1=5.4, Dia.=5′; 15×70 B; John Bortle (Stormville, NY, USA)
2013 Nov. 14.36 UT: m1=5.6, Dia.=6′, DC=8; 7×50 B; Gonzalo Vargas B (Cochabamba, Bolivia) [Se PArecia Tail de 20′ en un PA PAroximado de 290 deg.]
2013 Nov. 14.32 UT: m1=6.2, Dia.=2′, DC=8; 10x60B; Reginaldo Nazar (Curitiba/PR, Brasil)
2013 Nov. 14.30 UT: m1=6.1, Dia.=1′, DC=8; 7cm R (35x); Lucas Camargo da Silva (São José/SC, Brasil)
2013 Nov. 14.30 UT: m1=6.1, Dia.=2′, DC=8, tail 0.1 deg. in PA 290 deg.; 10×50 B; Willian Souza (Sao Paulo, Brazil)
2013 Nov. 14.30 UT: m1=6.2, Dia.=2′, DC=8, tail 0.2 deg. in PA 290 deg.; 10cm R f/5 @16x); Willian Souza (Sao Paulo, Brazil)
2013 Nov. 14.30 UT: m1=6.0, Dia.=2′, DC=8; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [altitude 14 degrees]
2013 Nov. 14.30 UT: m1=6.1, Dia=2′, DC=7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 14 degrees]
2013 Nov. 14.29 UT: m1=5.4, Dia.=6′, DC=6/; 11X80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Nov. 14.29 UT: m1=6.1; 18cm L (57x); Margarete J. Amorim (Florianopolis, Brazil) [altitude 10 degrees]
2013 Nov. 14.22 UT: m1=6.1, Dia.=3′, DC=8, Tail= 0.7º en PA: 300º; 10×50 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [En outburst. PAariencia casi estelar. La baja altura sobre el horizonte ( 15º ) y la interferencia de la luz zodiacal no permitieron realizar una observación a naked eye. Cielo muy claro de montaña]
2012 Nov. 14.21 UT: m1=6.2; naked eye; NiTails Biver (Pico Veleta, Spain)
2012 Nov. 14.21 UT: m1=6.3, Dia.=3′; 7×50 B; NiTails Biver (Pico Veleta, Spain)
2013 Nov. 14.202 UT: m1=6.2, Dia.=3′, DC=8, Tail=50′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 13.75 UT: m1=8.0, Dia.=2′, DC=6; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia) [8 degrees altitude, twilight interference. DC has increased considerably since last observation but coma still PApears quite small]
2013 Nov. 13.74 UT: m1=7.0; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Enhanced through Swan band filter]
2013 Nov. 13.72 UT: m1=7.4, Dia.=6’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Very faint tail 15’ in length in P.A. 290, Stellar central condensation, outer coma small with faint diffused edges, low alt – 7.5°, Twilight]
2012 Nov. 13.41 UT: m1=7.4, Dia.=&7′; 15×70 B; John Bortle (Stormville, NY, USA)
2013 Nov. 13.31 UT: m1=7.2, Dia.=4′, DC=7; Tail: 0.5 deg. in PA: 300 deg.; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 16 degrees, nautical twilight]
2013 Nov. 13.21 UT: m1=7.0, Dia.=~7′, DC=5/; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [weak tail in 42x200L (long= 0.4 degrees; PA= 295 degrees) (altitude 16 degrees)]
2013 Nov. 13.30 UT: m1=7.8, Dia.=2′, DC=6; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 15 degrees]
2012 Nov. 13.22 UT: m1=7.4, Dia.=3′; 7×50 B; NiTails Biver (Pico Veleta, Spain)
2013 Nov. 12.72 UT: m1=8.3, Dia.=2.5’, DC=5; 25cm L f:5 (39x); Chris Wyatt, Walcha, NSW, Australia] [Tail to West PAproximately, difficult to determine length due to bright star. Enhances well in Swan Band filter. Low alt – 7.5°, slight twilight interference, rPAid movement noticeable over 10 minute period]
2013 Nov. 12.72 UT: m1=8.4, Dia.=4’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma small with compact central condensation and thin faint outer edge of coma, PApears circular, no tail. Twilight, low alt – 9°]
2013 Nov. 12.51 UT: m1=7.5:, Dia.=4′, DC=3/; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: visible]
2013 Nov. 12.21 UT: m1=8.5, Dia.=4.5′, DC=5, Tail:15′ in PA=295; 20×60 B; José J. Chambó (Vallés, Valencia, España) [City lights, Low altitude: 20º]
2013 Nov. 12.18 UT: m1=8.1, Dia.=5′, DC=4/, Tail=0.33 deg. PA: 290 deg.; 25×100 B; Martin Lehky (Czech Republic)
2013 Nov. 12.18 UT: m1=7.9, Dia.=2′; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Nov. 12.15 UT: m1=7.9, Dia.=5′, DC=5/, Tail=0.35 deg. in PA 290 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [It is brighter than last time, although it locates lower.]
2013 Nov. 11.30 UT: m1=7.8, Dia.=4′, DC=7, Tail: 0.2 degrees in PA 290 degrees; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 14 degrees]
2013 Nov. 11.23 UT: m1=7.7, Dia.=5′, DC=7, Tail: 1.2º en PA 300º; 10×50 B; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, alt. 1140 m, León, España ) [ En 25x100B: m1=8.0. Coma exterior no perceptible. Otra Tail, ( más débil que la  visualmente observada  en sesiones anteriores ), era visible a lo largo de 0.6º en PA 285º. Interferencia de la luz zodiacal. Altura sobre el horizonte: 21º. Cielo muy claro de montaña]
2013 Nov. 11.21 UT: m1=7.9, Dia.=~4′, DC=6; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [weak tail in 42x200L (long= 0.3 degrees; PA= 300 degrees) (altitude 20 degrees)]
2013 Nov. 10.51 UT: m1=8.1, Dia.=5′, DC=3; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 10.30 UT: m1=8.5, Dia.=2′, DC=5; 10cm R f/5 (50x); Willian Souza (Sao Paulo, Brazil)
2013 Nov. 10.193 UT: m1=8.1, Dia.=3′, DC=5, Tail=15′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 09.31 UT: m1=8.4, Dia.=3′, DC=6; 20×100 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 18 degrees, nautical twilight]
2013 Nov. 08.83 UT: m1=8.4, Dia.=3.4′, DC=7, Tail 9′ in PA 290 deg.; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 08.79 UT: m1=8.3, Dia.=2.8′, DC=7; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 08.63 UT: m1=8.5, Dia.=2×6′, DC=4; 25cm L f/4.5(45x); Gonzalo Vargas B. (Cochabamba, Bolivia)
2013 Nov. 08.53 UT: m1=8.1, Dia.=7′, DC=3; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.47 UT: m1=7.0, Dia.=4′, DC=5; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: Yes visible]
2013 Nov. 08.196 TU: m1=7.7, Dia.=4′, DC=5, Tail=20′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 08.17 UT: m1=8.1, Dia.=8.8′, DC=5, Tail: 0.50 deg. in PA: 300 deg., 25×100 B; Jakub Cerny (Sieggraben, Austria)
2013 Nov. 08.17 UT: m1=8.0, Dia.=5′, DC=6; 10×50 B; Timo Karhula (Åkesta Observatory, Västerås, Sweden) [40cm L, 68x showed a 0.25-deg long, straight tail towards PA 285.  Degree of condensation has increased substantially.]
2013 Nov. 08.12 UT: m1=8.1, Dia.=4′, DC=5; 8×56 B; Sandor Szabo (Sieggraben, Austria) [with 50.8L, 189x: tail is 22’ long]
2013 Nov. 08.11 UT: m1=8.9, Dia.=4.5′, DC=4, Tail=0.2 deg. in PA 295 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [Faint in binocular 20×80. Clouds and fog interference, so maybe I underestimated.]
2013 Nov. 07.72 UT: m1=8.4, Dia.=9’, DC=4; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [No tail, comma PApears diffuse with a small faint central condensation but not stellar. Low altitude – 10.6°, slight twilight interference]
2013 Nov. 07.62 UT: m1=8.0, Dia.=5′, DC=4, Tail= 30′ in pa: 290°; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Comps TYC272-272-1 7.77, Tycho2+Bessell corrections. Some high clouds passing, but good dark sky. ]
2013 Nov. 07.50 UT: m1=7.9, Dia.=7′, DC=4; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 07.30 UT: m1=8.5:, Dia.=2′, DC=5; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 15 degrees, nebulosity interference]
2013 Nov. 07.19 UT: m1=8.2, Dia.=3.4′, DC=4, Tail:35′ in PA=295°; 20×60 B; José J. Chambó (Vallés, Valencia, España) [City lights, Low altitude: 22º]
2013 Nov. 06.90 UT: m1=9.0, Dia.=4′, DC=5; 20cm L (30x); Man-To Hui (Nhut Thong Pau, Canton, China) [city lights; very high humidity so transparency poor at low elevations; tail not seen]
2013 Nov. 06.21 UT: m1=8.0, Dia.=6′, DC=6, Tail: 0.6º en PA 300º; 10×50 B; Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1220 m, Asturias, España) [El cometa muestra un claro aumento del grado de condensación (DC=6) respecto a mi observación previa de Oct. 31.20 (m1=8.3; DC=3). Interferencia de la luz zodiacal. Altura sobre el horizonte: 23º]
2013 Nov. 06.199 TU: m1=8.6, Dia.=4′, DC=3; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 05.72 UT: m1=8.6, Dia.=6.5’, DC=2/3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma enhances well using Swan Band filter and PApears elongated to the West, no tail visible, slight twilight interference, low altitude at 11°]
2013 Nov. 05.41 UT: m1=9.1 CCD, Dia.= 1’, Tail= 13′ PA= 300°; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 05.31 UT: m1=8.7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 19 degrees, nautical twilight]
2013 Nov. 05.30 UT: m1=8.8, Dia.=2′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 18 degrees, nautical twilight]
2013 Nov. 05.11 UT: m2=12.3 CCD, Dia.=&9′, Tail>21.5′ in PA 299 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Nov. 04.74 UT: m1=8.4, Dia.=4′; 25.4 L (71x); David A. J. Seargent (Cowra, NSW, Australia) [Quite strongly enhanced thro Swan Band filter. Low elevation & twilight]
2013 Nov. 04.73 UT: m1=8.7, Dia.=5.3’, DC=2/3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, small hint of central condensation, no tail, windy conditions, slight twilight interference, low alt 12°]
2013 Nov. 04.72 UT: m1=9.1, Dia.=3.5’, DC=5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Faint tail visible 15.5’ in length in P.A. 293, small compact coma, almost stellar, low alt at 10.5°]
2013 Nov. 04.48 UT: m1=8.3, Dia.=5′, DC=3; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA) [Faint tail 0.2d in length in P.A. 310.]
2013 Nov. 03.75 UT: m1=9.0:, Dia.=3′, DC=3; 25×100 B; Michael Mattiazzo (Swan Hill, Victoria, Australia) [8 degrees altitude, twilight interference]
2013 Nov. 03.63 UT: m1=8.6, Dia.=3.5′, DC=4, Tail=20′ in pa: 290 deg.; 20×60 B; Mike Linnolt (Ocean View, HI, USA) [Comps TYC267-813-1 8.08, TYC266-493-1 9.16, Tycho2+Bessell corrections. Some high clouds passing. Coma elongated in direction of tail, tail diffuse and low contrast with sky]
2013 Nov. 03.37 UT: m1=10.0 CCD, Dia.= 1.6’, Tail=16′ PA= 294°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 03.21 UT: m1=8.6, Dia.=4′, DC=4, Tail:25′ in PA=285; 20×60 B; José J. Chambó (Hoya Redonda, Valencia, España)
2013 Nov. 03.199 TU: m1=8.7, Dia.=4′, DC=3; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 03.194 TU: m1=8.9, Dia.=4′, DC=3, Tail=15′; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Nov. 03.10 UT: m2=12.5 CCD, Dia.=&9′, Tail>21.5′ in PA 299 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Nov. 02.71 UT: m1=9.5, Dia.=3’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Faint tail visible, 12’ in length in P.A. 290, enhances well using Swan Band filter, inner coma bright with small central condensation, low alt at 9.3°]
2013 Nov. 02.40 UT: m1=10.0 CCD, Dia.= 0.9’, Tail=9′ PA= 304°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 02.31 UT: m1=9.2, Dia.=3′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [comet altitude: 20 degrees, nautical twilight]
2013 Nov. 01.50 UT: m1=9.5, Dia.=3′, DC=3; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA) [Faint tail 0.2d in length in P.A. 310.]
2013 Nov. 01.47 UT: m1=9.0, Dia.=3′, DC=3/; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail visible]
2013 Nov. 01.14 UT: m1=8.9 CCD + V filter, Dia.=2.8′, DC=5, Tail: 0.23 deg. in PA 294 deg.; 6.8cm R f/4 (5x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland)[Comet alt. 27.3 deg.; Cat.(AQ)- 6 comparison stars: V=(10.0-11.2) with color index B-V=(0.52-0.67)]
2013 Nov. 01.13 UT: m1=9.5, Dia.=3.5′, DC=4; 25×100 B; Martin Lehky (Czech Republic)
2013 Nov. 01.13 UT: m1=[9.3, NEGATIVE; 20×80 B; Marek Biely (Brno; Czech Republic)
2013 Nov. 01.12 UT: m1=8.9, Dia.=5′, DC=4, Tail: 0.2 deg in PA 290 deg.; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Relatively easy to see, but still pretty faint in binoculars]
2013 Nov. 01.12 UT: m1=9.2, Dia.=3.5′, DC=5, Tail: 0.3 deg in PA 290 deg.; 32.6cm L (50x); Piotr Guzik (Przełęcz Szklarska, Poland) [Bright and large. Bright central core surrounded by much fainter halo. Long tail relatively easy to see]
2013 Nov. 01.08 UT: m2=12.8 CCD, Dia.=&6′, Tail=14′ in PA 299 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 31.72 UT: m1=9.6, Dia.=4.4’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Very faint tail visible, 8’ in length in P.A. 295. Diffuse outer coma with small and slightly brighter central condensation, almost stellar in PApearance. Coma enhances well in Swan Band filter, low alt – 9°]
2013 Oct. 31.38 UT: m1=11.0 CCD, Dia.= 0.7’, Tail=13′ PA= 334°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 31.30 UT: m1=9.5:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 18 degrees, nautical twilight, nebulosity interference]
2013 Oct. 31.20 UT: m1=8.3, Dia.=6′, DC=3; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 25x100B: m1=8.5, Tail: 0.4º en PA 300º. Ligera interferencia lunar. No era perceptible la parte más débil de la coma externa]
2013 Oct. 31.17 UT: m1=8.0, Dia.=2.2′, DC=5; 32cm L f/5; Uwe Pilz (Leipzig, Germany) [Tail= 4′ in PA: 290 deg.; moon only 8° away]
2013 Oct. 31.16 UT: m1=8.9, Dia.=~4′, DC=2; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 Oct. 31.15 UT: m1=9.5, Dia.=3.5′, DC=3/; 25×25 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 31.15 UT: m1=9.2, Dia.=4.9′, DC=5, Tail: 0.3 deg. in PA: 310 deg.; 25×100 B; Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 31.13 UT: m1=9.0, Dia.=4′, DC=4; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Faint, but definitely seen despite some moonlight interference]
2013 Oct. 31.13 UT: m1=9.3, Dia.=3.5′, DC=4, Tail: 0.25 deg in PA 300 deg.; 32.6cm L (50x); Piotr Guzik (Przełęcz Szklarska, Poland)
2013 Oct. 30.72 UT: m1=9.7, Dia.=3.2’, DC=3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with broad diffused centre. Close to bright star (7.3), Moonlight, fog, low alt (9°), no tail visible, enhances using Swan Band filter]
2013 Oct. 29.31 UT: m1=10.0, Dia.=1′, DC=5; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 18 degrees, nautical twilight, moonlight interference]
2013 Oct. 29.18 UT: m1=9.7, Dia.=4.0′, DC=4, Tail= 0.2deg. in PA: 300; 40.7cm L (58x); NiTails Biver (Ablis, France)
2013 Oct. 29.12 UT: m1=9.7, Dia.=2.0′, DC=3; 25.0 cm refl. (77x); Sandor Szabo (Boly, Hungary) [Tail is seen to PA:250deg 1-2′ long]
2013 Oct. 29.07 UT: m2=13.1 CCD, Dia.=&6′, Tail=14′ in PA 299 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 28.31 UT: m1=10.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 19 degrees, nautical twilight, moonligh interference]
2013 Oct. 28.200 TU: m1=9.4, Dia.=4′, DC=3; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Oct. 27.46 UT: m1=10.3, Dia.=3.5′, DC=~3-4; 41cm L; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 27.31 UT: m1=9.8:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 19 degrees, nautical twilight, moonligh interference]
2013 Oct. 27.188 UT: m1=9.7, Dia.=4′, DC=3/; 15×80 B; Edwin van Dijk (Burlage, Germany) [Moonlight]
2013 Oct. 27.16 UT: m1=10.0, Dia.=~4′ DC=2; 20cm L (80x); Alex Scholten (Eerbeek, Netherlands) [possible underestimated due to moonlight, Last Quarter]
2013 Oct. 26.49 UT: m1=9.5, Dia.=2′, DC=3/; 25cm L (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail visible]
2013 Oct. 23.36 UT: m1=11.2 CCD, Dia.= 0.7’, Tail=12′ PA= 334°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 23.15 UT: m1=9.1 CCD + V filter, Dia.=2.2′, DC=5; 6.8cm R f/6 (12x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight. Catalogue (AQ) – 4 comparison stars: V=9.7-11.5 with color index B-V=0.58-0.68]
2013 Oct. 23.13 UT: m1=9.8, Dia.=3′, DC=4; 32.6cm L (50x); Piotr Guzik (Biórków Mały, Poland) [Relatively easy too see despite bright moonlight. Elongated, rather bright inner coma immersed in fainter halo. Excellent transparency]
2013 Oct. 22.19 UT: m1=10.2, Dia.=3.0′, DC=3; 40.7cm L (58x); NiTails Biver (Versailles, France)
2013 Oct. 22.07 UT: m2=13.4 CCD, Dia.=&6.3′, Tail=13.9′ in PA 299 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 21.40 UT: m1=11.9 CCD, Dia.= 0.6’, Tail=10′ PA= 354°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 20.13 UT: m1=10.3, Dia.=2.0′, DC=4; 20.3cm L (63x); Piotr Guzik (Krosno, Poland)
2013 Oct. 20.32 UT: m1=10.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 19 degrees, nautical twilight, moonlight and clouds interference]
2013 Oct. 20.13 UT: m1=10.3:, Dia.=2′, DC=4; 20.3cm L (63x); Piotr Guzik (Krosno, Poland) [Bright moonlight, some thin cirruses interference]
2013 Oct. 19.37 UT: m1=11.8 CCD, Dia.= 0.8’, Tail=5′ PA= 250°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 19.15 UT: m1=[9.1 Negative; 20×80 B; Marek Biely (Brno, Czech Republic)
2013 Oct. 18.18 UT: m1=10 CCD, Dia.=1′, DC=7; Digital Reflex + 0.3m lens; Giuseppe PPApa (Sicily, Italy)
2013 Oct. 16.75 UT: m1=10.1, Dia.=3.9’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma PApears broadly diffuse with slightly brighter central condensation. Enhances using Swan Band filter, slight twilight interference, observed at 12° altitude]
2013 Oct. 16.49 UT: m1=10.1, Dia.=3′, DC=3; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 16.20 UT: m1=8.8, Dia.=6′, DC=3/; 25×100 B; Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España)
2013 Oct. 16.20 UT: m1=9.2, Tail: 0.3º en PA: 300º; 20 cm SCT (77x); Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España) [Luz zodiacal]
2013 Oct. 14.75 UT: m1=10.2, Dia.=4’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma PApears elongated to the West PAproximately. Enhances slightly using Swan Band filter, twilight interference, low altitude  at 12.5°, averted vision]
2013 Oct. 13.78 UT: m1=10.7, Dia.=2.5′, DC=3; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 13.635 UT: m1=11.2, Dia.=2′; 50cm L (60x); Mike Linnolt (Ocean View, HI, USA)
2013 Oct. 13.17 UT: m1=10.6, Dia.=3′, DC=3, no Tail; 20cm SCT(50x); Carlos Labordena (Castellón, España)
2013 Oct. 13.17 UT: m1=10.8, Dia.=2′, DC=4; 40cm T (58x); NiTails Biver (Ablis, France)
2013 Oct. 12.78 UT: m1=9.9, Dia.=3.1′, DC=5; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.78 UT: m1=10.8:, Dia.=2′, DC=2; 20cm L (57x); Michael Mattiazzo (Swan Hill, Victoria) [Comet at limit of visibility. Twilight interference, 10 degrees altitude]
2013 Oct. 12.48 UT: m1=10.2 CCD, Dia.=4.6′, Tail=15′ in PA: 297 deg.; 11cm R + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 11.78 UT: m1=10.4, Dia.=2.2′, DC=4; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.48 UT: m1=10.6, Dia.=2.5′, DC=3; 30×125 B, Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 11.48 UT: m1=10.4 CCD, Dia.=4.2′, Tail=15.5′ in PA: 297 deg.; 11cm R + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 11.40 UT: m1=11.5 CCD, Dia.= 0.4′’, Tail=7′ PA= 296°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 11.32 UT: m1=10.3, Dia.=2′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [comet altitude: 18 degrees, nautical twilight]
2013 Oct. 10.48 UT: m1=10.5 CCD, Dia.=4.1′, Tail=15′ in PA: 297 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 09.74 UT: m1=10.1, Dia.=2.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Bright star in coma (12.4), coma PApears elongated to the North West PAproximately, enhances slightly using Swan Band filter, no tail, 8.5° altitude. Slight twilight interference]
2013 Oct. 09.48 UT: m1=10.6 CCD, Dia.=4.0′, Tail=12.7′ in PA: 298 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 09.46 UT: m1=11.0, Dia.=2′, DC=3; 25cm Reflector (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 09.38 UT: m1=11.8 CCD, Dia.=0.6′’, Tail=4′ PA= 304°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 08.78 UT: m1=[11.0; 20cm L (57x); Michael Mattiazzo (Swan Hill, Victoria) [comet not visible in brightening twilight at 8 degrees altitude]
2013 Oct. 08.48 UT: m1=10.6 CCD, Dia.=3.9′, Tail=14′ in PA: 297 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 08.32 UT: m1=10.8, Dia.=0.5′, DC=5; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 16 degrees, nautical twilight]
2013 Oct. 07.48 UT: m1=10.7 CCD, Dia.=3.9′, Tail=13.8′ in PA: 297 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 07.32 UT: m1=11.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 15 degrees, nautical twilight]
2013 Oct. 07.21 UT: m1=9.8, Dia.=3′, DC=4; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20cm SCT (77x): m1=10.2, Tail: 0.15º en PA 300º. Luz zodiacal]
2013 Oct. 06.48 UT: m1=10.7 CCD, Dia.=3.6′, Tail=10.8′ in PA: 297 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 05.48 UT: m1=10.8 CCD, Dia.=3.4′, Tail=11.8′ in PA: 297 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 05.48 UT: m1=11.4, Dia.=2′, DC=3/4; 41cm reflector; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 05.48 UT: m1=11.0, Dia.=4′, DC=2; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 05.33 UT: m1=[11.1; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 04.75 UT: m1=11.3, Dia.=2’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma close to bright star (10.6). Enhances slightly using Swan Band filter at x39, at x83 the coma does not seem to enhance using Swan Band filter. No tail, averted vision. Low alt, 9°.]
2013 Oct. 04.70 UT: m1=10.1, Dia.=3.4’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse, bright star at coma edge, diffuse edges of coma and gradually brightening to centre]
2013 Oct. 04.48 UT: m1=10.9 CCD, Dia.=3.7′, Tail=12.2′ in PA: 298 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 04.193 UT: m1=11.5, Dia.=1.7′, DC=3; 25cm T (97x); NiTails Biver (Crespieres, France)
2013 Oct. 04.185 UT: m1=11.9, Dia.=1.5′, DC=3; 25cm T (253x); NiTails Biver (Crespieres, France)
2013 Oct. 04.13 UT: m1=10.8, Dia.=4.5′, DC=4/, Tail: 0.1 deg. in PA: 300 deg.; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 04.11 UT: m1=10.9, Dia.=2.5′, DC=5, Tail: 4′ in PA 290 deg.; 32.6cm L (50x); Piotr Guzik (Dosłońce, Poland) [Bright and relatively easy to see. Zodiacal light interference]
2013 Oct. 04.11 UT: m1=10.7, Dia.=2.5′, DC=4; 50.8cm refl. (189x); Sandor Szabo (Hungary) [Tail is 3’ long to 295 deg.]
2013 Oct. 04.10 UT: m1=10.3, Dia.=5.8′, DC=3/; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 03.75 UT: m1=10.9, Dia.=2.4’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, with slight central condensation visible, enhances moderately using Swan Band filter, no obvious tail, averted vision. Low alt, 9°. Slight twilight interference, nearby stars PApeared a little bloated due to atmospherics]
2013 Oct. 03.49 UT: m1=11.4, Dia.=2×4′; 41cm L ; David H. Levy (Jarnac Observatory, Vaiol, Arizona, US) [Coma diffuse and elongated in PA 310 degrees. Comet is still faint but getting better and better]
2013 Oct. 03.47 UT: m1=11.1 CCD, Dia.=3.5′, Tail=11.5′ in PA; 296 deg.; 11cm refractor + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 03.14 UT: m1=10.4, Dia.=3′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Oct. 02.48 UT: m1=11.1: CCD, Dia.=3.4′, Tail=10.5′ in PA: 298 deg.; 11cm R + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Oct. 02.45 UT: m1=11.4, Dia.=2′, DC=3/4; 41cm reflector; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 02.13 UT: m1=11.0, Dia.=3.2′, DC=5, Tail: 0.1 deg in PA: 300 deg.; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.49 UT: m1=[11.0 NEGATIVA; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 01.20 UT: m1=11.2, Dia.=1.5′, DC=3; 40cm T (135x); NiTails Biver (Versailles, France)
2013 Oct. 01.15 UT: m1=11.3, Dia.=3.5′, DC=4; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 30.37 UT: m1=11.9 CCD, Dia.=0.3’, Tail=5′ PA= 296°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 30.13 UT: m1=11.4, Dia.=2.7′, DC=6; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 29.48 UT: m1=11.4 CCD, Dia.=2.7′, Tail=6.6′ in PA:299 deg.; 11cm R + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Sep. 29.38 UT: m1=12.1 CCD, Dia.=0.4’, Tail=4′ PA= 298°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 27.38 UT: m1=12.3 CCD, Dia.=0.6’, Tail=13′ PA= 298°; CCD images unfiltered; Clermont Vallière  (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 27.34 UT: m1=[11.3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Sep. 25.48 UT: m1=12.0 CCD, Dia.=1.7′, Tail=5.0′ in PA:296 deg.; 11cm R + CCD; Artyom Novichonok (remotely Mayhill, U.S.A.)
2013 Sep. 24.19 UT: m1=11.7, Dia.=1′, DC=2; 40cm T (350x); NiTails Biver (Versailles, France)
2013 Sep. 24.19 UT: m1=11.3:, Dia.=1.5′, DC=2; 40cm T (135x); NiTails Biver (Versailles, France)
2013 Sep. 22.48 UT: m1=12.5 CCD, Dia.=&0.9′, Tail=&3.4′ in PA:297 deg.; Artyom Novichonok (remotely Mayhill, U.S.A.) [Near full Moon. Possible, the comet is some brighter than 12.5m]
2013 Sep. 14.41 UT: m1=11.7, Dia.=1.5′, DC=3/; 45.7cm L f/4.2 (191x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Slight condensation towards center]
2013 Sep. 13.19 UT: m1=10.8, Dia.=2.5′, DC=2/; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Débil coma externa, elongada coma interna. Altura sobre el horizonte: 21º. Estrellas de campo comprobadas en el DSS. Cielo muy claro de montaña, buen seeing]
2013 Sep. 09.154 UT: m1=13.0, Dia.=0.9′, DC=2; 40cm T (135x); NiTails Biver (Ablis, France)
2013 Sep. 09.151 UT: m1=12.7, Dia.=1.2′, DC=2;  40cm T (135x); NiTails Biver (Ablis, France)
2013 Sep. 07.11 UT: m1=12.4, Dia.=1.2′, DC=5; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 07.08 UT: m1=13.0, Dia.=0.9′, DC=4; 50.8cm L (307x); Sandor Szabo (Hungary) [Easy to see, a bit elongated. Motion was seen]
2013 Sep. 06.13 UT: m1=11.9:, Dia.=~1.3′ DC=2; 35.6cm T (140x); Alex Scholten (Bussloo, Netherlands)
2013 Sep. 05.40 UT: m1=12.7, Dia.=1.0′, DC=3; 37cm L (142x); Bob King (Duluth, Minn. U.S.) [Comet diffuse, dim but not difficult. 13 degrees high in zodiacal light in very clear sky. Used AAVSO SY Cnc sequence comp stars]
2013 Sep. 04.47 UT: m1=13.0, Dia.=0.8′, DC=~4; 41cm reflector; Alan Hale (Cloudcroft, New Mexico, USA) [I was able to view the comet under reasonably decent conditions this morning. Moonlight is no longer a factor, of course, but the comet is smack in the zodiacal light, so the background sky is still somewhat bright]
2013 Sep. 04.15 UT: m1=12.6, Dia.=1.3′, DC=3; 40cm T (135x); NiTails Biver (Ablis, France)
2013 Sep. 04.14 UT: m1=12.7, Dia.=1.2′, DC=3; 40cm T (135x); NiTails Biver (Ablis, France)
2013 Sep. 04.07 UT: m1=13.0, Dia.=0.8′, DC=5; 33cm L (182x); Piotr Guzik (Krosno, Poland) [Small, slightly elongated object. Zodiacal light interference. Altitude: 12 degrees, solar altitude: -17 degrees. Comparison stars at the same low altitude]
2013 Sep. 03.16 UT: m1=13.2, Dia.=0.8′, DC=2; 40cm T (350x); NiTails Biver (Ablis, France)
2013 Sep. 03.15 UT: m1=12.7, Dia.=1′, DC=3; 40cm T (135x); NiTails Biver (Ablis, France)
2013 Sep. 01.47 UT: m1=13.1, Dia.=0.6′, DC=~4; 41cm reflector (229x); Alan Hale (Cloudcroft, New Mexico, USA)
2013 Sep. 01.17 UT: m1=11.2, Dia.=1.8′, DC=2/; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Significativamente más brillante que lo previsto. Observado durante 25 minutos. Desde cielos oscuros de montaña es posible observar alguna extensión de la débil coma externa. Altura sobre el horizonte: 14º. Alguna interferencia de luz lunar. Estrellas de campo comprobadas en el DSS]
2013 Aug. 31.10 UT: m1=13.2, Dia.=0.8′, DC=5; 33 cm L (182x); Piotr Guzik (Krosno, Poland) [Small, slightly elongated object. Some moonlight and twilight interference. Altitude: 13 degrees, solar altitude: -14 degrees. Stars down to ~14.0 mag visible]
2013 Jun. 14.80 UT: m1=15.1 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Jun. 07.80 UT: m1=15.5 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Jun. 05.80 UT: m1=15.1 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Jun. 02.80 UT: m1=15.4 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  31.85 UT: m1=15.0 CCD, Dia.=0.15′, DC=5; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  27.79 UT: m1=16.0 CCD, Dia.=0.15′, DC=2; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  25.80 UT: m1=15.8 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  20.82 UT: m1=16.0 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  17.80 UT: m1=15.5 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  14.76 UT: m1=16.1 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  10.87 UT: m1=15.9:, Dia.=0.3′; 40cm T (350x); NiTails Biver (CrPAonne s/Arzon, France)
2013 May  08.78 UT: m1=16.2 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 May  07.08 UT: m1=16.7 CCD, Dia.=0.2’, Tail= 0,2′ PA 124°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  03.78 UT: m1=16.3 CCD, Dia.=0.15′, DC=3; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 27.78 UT: m1=15.8 CCD, Dia.=0.15′, DC=5; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 22.05 UT: m1=16.6 CCD, Dia.=0.2’, Tail= 0,3′ PA 101°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 19.80 UT: m1=16.2 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 18.81 UT: m1=16.1 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 15.78 UT: m1=15.1 CCD, Dia.=0.15′, DC=5; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 14.78 UT: m1=16.2 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 12.78 UT: m1=15.9 CCD, Dia.=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 10.78 UT: m1=16.3 CCD, Dia=0.15′, DC=5; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 09.78 UT: m1=16.2 CCD, Dia=0.15′, DC=4; 25cm L +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 08.93 UT: m1=15,4 CCD, Dia.=0.4′; Joan Genebriera (Tacande Observatory, La Palma, Canary Islands, España)
2013 Apr. 06.82 UT: m1=16.2 CCD, Dia.=0.15′, DC=3; 25cm L + Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 31.13 UT: m1=16.0 CCD, Dia.=0.2’; tail: 0,4′ in PA:98 deg.; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 242-073007 mag.=15.98]
2013 Mar. 31.02 UT: m1=15.2, DC=4; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 30.11 UT: m1=15.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 242-073023 mag.=16.81]
2013 Mar. 24.04 UT: m1=16.0 CCD, Dia.=0.3’, Tail:0,3′ PA:124°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 242-072590 mag.=15.98]
2013 Mar. 23.79 UT: m1=15.8 CCD, Dia.=0.15′, DC=4; 25cm L + Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 22.78 UT: m1=16.4 CCD, Dia.=0.15′, DC=3; 25cm L + Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 19.78 UT: m1=15.6 CCD, Dia.=0.15′, DC=5; 25cm L + Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 18.06 UT: m1=15.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-074742 mag.=17.26]
2013 Mar. 17.76 UT: m1=16.0 CCD, Dia.=0.15′, DC=4; 25cm L + Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 17.08 UT: m1=15.5 CCD, Dia.=0.2’, Tail:0,3 PA 97°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-073885 mag.=14.95]
2013 Mar. 15.19 UT: m1=15.9 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-074254 mag.=14.95]
2013 Mar. 14.02 UT: m1=16.2 CCD, Dia.=0.3’, Tail:0,3° PA:106°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-074423 mag.=16.01]
2013 Mar. 10.76 UT: m1=16.1 CCD, Dia.=0.12′, DC=5; 25cm L+Rc filter; Toni Scarmato (Calabria, Italy)
2013 Mar. 10.24 UT: m1=15.6 CCD; Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-074284 mag.=16.04]
2013 Mar. 10.22 UT: m1=15.0, Dia.=–, DC=5; Visual, 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 10.16 UT: m1=15.5 CCD, Dia.=0.33′, Tail=0.5′ in PA 98 deg.; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Mar. 07.005 UT: m1=15.5 CCD, Dia.=0.3′; 25cm SCT + CCD; Fernando Pablo Tifner (Obs. Beta Orionis, Rosario, Argentina)
2013 Mar. 04.92 UT: m1=14.9, Dia.=0.3′, DC=6; 35cm L (239x); Jakub Cerny (Rep. Checa)
2013 Mar. 04.84 UT: m1=15.3, Dia.=0.3’, DC=3; 50.8cm reflector (287x); Sandor Szabo (Sopron, Hunagry) [DisPApointed comet, because it has the same PApearance and faintness as seen 2 months Aug. Visually has not brightened at all. Motion was checked in 1 hour period.]
2013 Mar. 02.19 UT: m1=15.6 CCD, Dia.=0.34′, Tail=0.5′ in PA 100 deg.; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Feb. 27.105 UT: m1=15.7 CCD, Dia.=0.3′; Fernando Tifner (Obs. Beta Orionis, Rosario, Argentina)
2013 Feb. 19.25 UT: m1=15.7 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-078852 mag.=15.56; large error due to merging with a star]
2013 Feb. 11.25 UT: m1=15.5 CCD, Dia.=0.37′, Tail=0.5′ in PA 112 deg.; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Feb. 11.16 UT: m1=15.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-078852 mag.=15.56]
2013 Feb. 10.25 UT: m1=16.2 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [ comparison star 3UCAC 244-080042 mag.=15.94]
2013 Feb. 07.17 UT: m1=16.1 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-079746 mag.=15.88]
2013 Feb. 04.26 UT: m1=15.5 CCD, Dia.=0.36′, Tail=0.4′ in PA 107 deg.; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Feb. 03.21 UT: m1=16.1 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-079766 mag.=16.42]
2013 Feb. 02.90 UT: m1=15.0, Dia.=0.3′, DC=9, Tail:0.01′ PA:135°; 32cm L f/5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Feb. 02.25 UT: m1=16.0 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-081961 mag.=15.64]
2013 Jan. 28.13 UT: m1=15.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 244-083153 mag.=16.66]
2013 Jan. 22.30 UT: m1=15.5 CCD, Dia.=0.36′, Tail=0.2′ in PA 132 deg.; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Jan. 21.15 UT: m1=15.5 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [Comparison star 3UCAC 244-083668 mag.=15.45]
2013 Jan. 18.24 UT: m1=16.4 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 243-087517 mag. = 15.76]
2013 Jan. 16.27 UT: m1=16.3 CCD, Dia.=0.4′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 13.35 UT: m1=15.4 CCD, Dia.=0.37′; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Jan. 13.90 UT: m1=14.8, Dia.=0.3′, DC=7; 20cm SCT (222x); Juan José Gonzalez (Alto de la Garandilla – Escuredo, alt. 1150 m, León, España) [Estrellas de campo comprobadas en el DSS, observables hasta la magnitud 15.2 (PAASS). Estrellas de comparación PAASS cercanas al cometa. Cielo muy claro de montaña]
2013 Jan. 11.79 UT: m1=15.2, Dia.=0.4′, DC=7; 50.8cm L (307x); Sandor Szabo (Hungary) [Can be seen easily as a hairy star. Motion was cheched during a 2.2 hours period. Limiting magnitude in field is 16.5]
2013 Jan. 10.93 UT: m1=15.2 CCD, Dia.=0.38′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 10.25 UT: m1=15.9 CCD, Dia.=0.4′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.87 UT: m1=15.3 C CCD, Dia.=0.3′; 15cm R + CCD; Artyom Novichonok (remotely from Nerpio, Spain)
2013 Jan. 04.96 UT: m1=15.6 V CCD, Dia.=0.2′; 15cm R + CCD; Artyom Novichonok (remotely from Nerpio, Spain)
2013 Jan. 04.39 UT: m1=15.2 CCD, Dia.=0.36′; 0.61-m f/10 Cassegrain + CCD; R.Dymock & T.Prystavski (Sierra Stars Observatory, G68 (remotely Markleeville, California, U.S.A.)
2013 Jan. 03.30 UT: m1=15.8 CCD, Dia.=0.4′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 03.26 UT: m1=15.6 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 242-091060 mag.=15.89]

C/2012 Q1 (Kowalski)
2013 Oct. 12.92 UT: m1=19.2: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [faint comet, so 3 frames were co-added for the photometry]
2013 Aug. 09.93 UT: m1=19.0 CCD, Dia.=&0.2′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Aug. 02.87 UT: m1=18.6: CCD, Dia.=0.27′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [comet is faint, so 3 frames were co-added for the photometry]

C/2012 OP (Siding Spring)
2013 July 31.81 UT: m1=18.9 CCD, Dia.=0.2′, Tail=0.2′ in PA 203 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 L2 (LINEAR)
2013 July 03.40 UT: m1=11.2, Dia.=1.5′, DC=3; 30cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia) [Diffused coma. No tail observed]
2013 July 03.35 UT: m1=11.5, Dia.=1.9’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, averted vision, low altitude (6°), slight interference by fading twilight and zodiacal light]
2013 Jun. 27.20 UT: m1=10.8, Dia.=1.5′, DC=2; 30cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia) [No tail observed]
2013 Jun. 07.40 UT: m1=10.8, Dia.=2.9′, DC=2; 30cm Dobson; Con Stoitsis (Nagambie, Victoria Australia) [The coma is obviously more defused towards the centre. No tail observed. Light meter reading at twilight 20.78 (during observation)]
2013 Jun. 03.35 UT: m1=10.4, Dia.=3.3’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular, diffuse inner coma, enhances using Swan Band filter, no tail]
2013 May  19.35 UT: m1=10.5, Dia.=1.4’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma very diffuse]
2013 May  13.93 UT: m1=8.9, Dia.=5′, DC=2; 20×100 B; Marco Goiato (Araçatuba, Brasil) [moonlight interference, clouds]
2013 May  11.93 UT: m1=8.7, Dia.=5′, DC=3; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 May  09.36 UT: m1=9.6, Dia.=3.9’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma shows faint elongation to SW, weakly brightens to centre, Swan Band filter enhances coma slightly]
2013 May  07.36 UT: m1=9.9, Dia.=3.7’, DC=2/3; 25cm L f:5 (39); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma edges diffuse and gradually brightens weakly to centre, Swan Band filter enhances inner half of coma]
2013 May  03.88 UT: m1=8.5:, Dia.=7′, DC=3; 20cm SCT (77x); Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [Más brillante que lo previsto. Amplia coma difusa. Fin del crepúsculo astronómico. Muy baja altura: 3º. Cielo claro de montaña hasta el horizonte]
2013 May  03.35 UT: m1=9.4, Dia.=4.2’, DC=3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges which gradually brighten to centre. No tail.]
2013 May  01.36 UT: m1=9.8, Dia.=3.8’, DC=3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Low alt, coma has vey diffuse edges and a broad, weakly graduating patch of light to the centre, the inner 2/3rds of the coma enhances slightly using Swan Band filter, no tail, coma PApears circular]
2013 Apr. 22.35 UT: m1=10.1, Dia.=1.8’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, low altitude, averted vision. Cloud interference at times, seeing average. Comparison stars=TASS-4; Method=S; Cat=TA]
2013 Apr. 22.13 UT: m1=[10.5; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [negativa en 15cm]
2013 Apr. 18.36 UT: m1=10.0, Dia.=2.7’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, coma shows diffuse edges with slight brightening to centre. Enhances slightly using Swan Band filter and shows the coma diameter to 3.5’. Comparison stars: Tycho-2; Method= S; Cat=TA]
2013 Apr. 13.82 UT: m1=11.0, Dia.=1.3’, DC=5; 50.8cm reflector (189x); Sandor Szabo (Hungary) [Only 5 degree from Moon, but easy to see]
2013 Apr. 12.84 UT: m1=11.4, Dia.=2′, DC=3, no Tail; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2013 Apr. 12.14 UT: m1=11.0, Dia.=2′, DC=3; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: no visible]
2013 Apr. 10.94 UT: m1=10.4, Dia.=2.5′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Apr. 02.39: UT m1=11.0, Dia.=3′; 25.4cm L (71x); David A. J. Seargent (Cowra, NSW, Australia) [No obvious change using swan band filter. Low elevation and twilight glow]
2013 Mar. 30.94 UT: m1=10.8, Dia.=1.5′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Mar. 30.88 UT: m1=10.5, Dia.=3′, DC=3; 20cm SCT (77x); Juan José González (Granja de Moreruela, alt. 705 m, Zamora, España)
2013 Mar. 29.95 UT: m1=10.8, Dia.=1.5′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [No or little image enhance with comet filter]
2013 Mar. 24.01 UT: m1=8.0 CCD, Dia.=0.7’, tail=0.9′ PA 56°;  CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, CANADA) [comparison star 3UCAC 231-018774 mag.=9.929]
2013 Mar. 07.10 UT: m1=11.0, Dia.=2′, DC=3, Tail: Not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Mar. 05.78 UT: m1=11.0, Dia.=2.0′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Mar. 05.54 UT: m1=11.4 CAC; Camera 500D + 200mm lens f/2.8; Man-To Hui (Canton, China)
2013 Mar. 04.78 UT: m1=11.0, Dia.=2.1′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Mar. 04.75 UT: m1=11.3, Dia.=3′, DC=1/2; 25cm L (77x); Maciej Macidym (Chlebna, Poland)
2013 Mar. 03.10 UT: m1=11.0, Dia.=2′, DC=3, Tail: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Mar. 02.81 UT: m1=11.6, Dia.=1′, DC=3, Tail:0.05 degree PA:86°; 32cm L f/5 (96x); Uwe Pilz (Leipzig, Germany)
2013 Mar. 01.83 UT: m1=10.3, Dia.=4′, DC=2/; 20cm SCT (77x); Juan José González (Piedrafita de Babia, alt. 1240 m, León, España) [Coma difusa elongada hacia PA 50º]
2013 Feb. 28.75 UT: m1=10.8, Dia.=2.2′, DC=3, 40cm reflector (154x); Sandor Szabo (Sopron, Hunagry)
2013 Feb. 10.78 UT: m1=10.6, Dia.=2′, DC=s5, Tail: PA in 270°; 32cm L f/5 (96x); Uwe Pilz (Leipzig, Germany)
2013 Feb. 08.86 UT: m1=11.3, Dia.=1.8′, DC=3/; 20cm SCT (100x); Juan José González (Pandorado, alt. 1190 m, León, España)
2013 Feb. 08.77 UT: m1=11.1, Dia.=2′, DC=d3-4; 25cm reflec. (100x); Gabor Santa (Nagy-Hideg-hegy, Hungary) [59 deg above horizon. Very nice comet, round shPAed coma opens a little by east (starting to show tail?)]
2013 Feb. 07.937 UT: m1=11.5, Dia.=1.3′, DC=d4; 25cm reflec. (100x); Gabor Santa (Nagy-Hideg-hegy, Hungary) [26 deg above horizon]
2013 Feb. 06.10 UT: m1=11.5, Dia.=2´, DC=2, Tail: Not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Jan. 17.08 UT: m1=12.9 C CCD, Dia.=&1.5′; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 11.82 UT: m1=13.5, Dia.=0.7′, DC=4; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 Jan. 07.78 UT: m1=12.0, Dia.=1.5′, DC=3, no Tail; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2013 Jan. 03.87 UT: m1=11.8, Dia.=1.8′, DC=3/; 20cm SCT (133x); Juan José González (Aralla, alt. 1440 m, León, España)

C/2012 L1 (Linear)
2013 Jan. 11.84 UT: m1=13.6, Dia.=0.8′, DC=4; 50.8cm L (308x); Sandor Szabo (Hungary) [Located only 5’ from a 6.5mag star, but can be seen easily]

C/2012 K8 (Lemmon)
2013 Oct. 11.85 UT: m1=17.8 CCD, Dia.=0.24′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 K6 (McNaught)
2013 July 24.37 UT: m1=14.9 CCD, Dia.=0.62′, Tail=0.9′ in PA 141 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 29.18 UT: m1=14.8 CCD, Dia.=0.42′, Tail=0.5′ in PA 144 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 Jun. 11.88 UT: m1=14.0, Dia.=0.3′, DC=2; 50.8cm L (250x); Sandor Szabo (Hungary) [Very low, but motion could be checked in 10 minutes thanks for its closeness to a star]
2013 Jun. 03.37 UT: m1=14.4, Dia.=0.4’, DC=1; 25cm L f:5 (156x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, difficult to observe, visible in periods of good seeing, observed over a 20 minute period]
2013 Jun. 02.20 UT: m1=14.0 CCD, Dia.=0.87′, Tail=1.4′ in PA 136 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 May  09.38 UT: m1=13.8 CCD, Dia.=0.66′, Tail=1.3′ in PA 139 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia)

C/2012 K5 (LINEAR)
2013 Feb. 28.78 UT: m1=13.8, Dia.=0.3′, DC=2; 40cm reflector (250x); Sandor Szabo (Sopron, Hunagry)
2013 Feb. 10.78 UT: m1=12.2, Dia.=1′, DC=2; 32cm L f/5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Feb. 06.09 UT: m1=[11.3 Negativa; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Feb. 02.13 UT: m1=14.2 CCD, Dia.=1.1′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 28.05 UT: m1=12.4 CCD, Dia.=0.4’; tail=2.0′ PA=54°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 162-011987 mag.=14.60]
2013 Jan. 21.11 UT: m1=12.6 CCD, Dia.=0.5’, tail=1.1′ PA=54°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [Comparison star 3UCAC 171-013038 mag.=14.19]
2013 Jan. 19.04 UT: m1=12.1 CCD, Dia.=1.9′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 17.48 UT: m1=11.2, Dia.=2.2’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma edges diffuse and tenuous with faint broad tail to NE, 7’ in length, very transparent. Inner come slightly brighter but very small, stellar central condensation faint. Method=M; Cat=TK]
2013 Jan. 17.09 UT: m1=11.0 C CCD, Dia.=2.5′, Tail=0.4 deg in PA 35 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 17.07 UT: m1=12.2 CCD, Dia.=1.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 15.58 UT: m1=10.0, Dia.=2′, DC=3; 20cm L f:5 (30x); Man-To Hui (Canton, China) [city lights, fog]
2013 Jan. 13.85 UT: m1=10.0, Dia.=3′, DC=s6, Tail:0.08° PA:32°; 32cm L f:5 (96x); Uwe Pilz (Leipzig, Germany)
2013 Jan. 13.83 UT: m1=8.7, Dia.=4′, DC=5, Tail:0.2º en PA:50º; 25×100 B; Juan José Gonzalez (Alto de la Garandilla – Escuredo, alt. 1150m, León, España)
2013 Jan. 13.58 UT: m1=9.5, Dia.=2.1′, DC=3; 20cm L f:5 (30x); Man-To Hui (Canton, China) [city lights]
2013 Jan. 12.07 UT: m1=9.8, Dia.=1´,DC=2/3; 25cm f/4.5 (66x); Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 12.00 UT: m1=9.9 (S), Dia.=2.5′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.98 UT: m1=10.0:, Dia.=1′, DC=5; 18cm L (57x) ; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 11.80 UT: m1=9.7, Dia.=2,5′, DC=d3, Tail:0.3 deg, PA:0-40deg.; 8cm R (27x and 44x); Gabor Santa & Viktor Horvath (Paty, Pest, Hungary)
2013 Jan. 11.78 UT: m1=9.7, Dia.=1.5′, DC=6, Tail: 0.17deg 50.8L (78x); Sandor Szabo
2013 Jan. 11.12 UT: m1=9.6 (S), Dia.=3.0′, DC=3; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.00 UT: m1=9.5:, Dia.=2′, DC=5; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 09.06 UT: m1=10.8 CCD, Dia.=2.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.17 UT: m1=8.5, Dia.=5′, DC=5, Tail:0.2 deg. in PA:40 deg.; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Jan. 08.111 UT: m1=9.5, Dia.=3′, DC=2; 25cm f/4.5 (66x); Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 08.47 UT: m1=8.0, Dia.=7.7’, DC=3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, broad inner coma slightly brighter than edges, tail not visible, close to bright star. Method= S; Cat= TK]
2013 Jan. 07.81 UT: m1=8.1, Dia.=5′, DC=4, Tail=15′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Jan. 07.80 UT: m1=8.5, Dia.=5′, DC=5, Tail=20′; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2013 Jan. 07.46 UT: m1=8.9, Dia.=7’, DC=4; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma small with noticeable central condensation, not stellar, tail to NE 7.3’ in length, very transparent. Method= M; Cat= TK]
2013 Jan. 07.46 UT: m1=8.1, Dia.=13’, DC=2; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, tail is not noticeable, hint of elongation of the coma to NE. Method= S; Cat= TK]
2013 Jan. 07.07 UT: m1=10.7 CCD, Dia.=2.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 07.062 UT: m1=9.2, Dia.=3′, DC=3/4; 25cm f/4.5 (66x); Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 06.80 UT: m1=9.1, Dia.=2′, DC=3; 16cm Reflector (133x); Giuseppe PPApa (Sicily, Italy)
2013 Jan. 06.46 UT: m1=8.2, Dia.=9.5’, DC=1/2; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail to P.A. 045, broad and diffuse, coma large and almost evenly diffuse. Method=S; Cat=TK]
2013 Jan. 06.45 UT: m1=9.0, Dia.=7.2’, DC=2/3; 11×70 B; [Chris Wyatt (Walcha, NSW, Australia) [Tail to P.A. 045, coma diffuse, even brightness across much of the coma with slight brightening at centre. Method=S; Cat=TK]
2013 Jan. 06.14 UT: m1=9.4 CCD, Dia.=3.0’, tail:4.7 PA 45°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star Tycho 18501947 mag.=11.333]
2013 Jan. 05.45 UT: m1=8.2, Dia.=8.6’, DC=2/3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Tail in P.A. 045 with a length of 12.5’, tail width at extremity is PAproximately 10.4’. Small central condensation PApears diffuse and offset to WSW, inner coma slightly brighter than coma edge, best viewed with averted vision, does not enhance with Swan Band filter. Method= S; Cat= TK]
2013 Jan. 05.45 UT: m1=8.3, Dia.=7.5′, DC=3; 11×50 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Short tail 50 PA better seen with  averted vision]
2013 Jan. 05.31 UT: m1=9.3, Dia.=4′, Tail:12′ in pa:40; 50cm L (60x); Mike Linnolt (Ocean View, Hawaii) [Sky conditions pretty dark and clear, maybe some high thin cloud or vog. Tail pretty broad fan shPAed.]
2013 Jan. 05.22 UT: m1=9,3, Dia.=4′, DC=6; 20×100 B; Douglas Marín (Ciudad Bolívar, Bolívar, Venezuela)
2013 Jan. 05.12 UT: m1=8.6 (S), Dia.=5′, DC=4, Tail:10′ in PA:85º; 20X100 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 04.93 UT: m1=9.0, Dia.=2′, DC=4; 16cm Reflector (48x); Giuseppe PPApa (Sicily, Italy)
2013 Jan. 04.93 UT: m1=9.5, Dia.=2′, DC=4; 16cm Reflector (133x); Giuseppe PPApa (Sicily, Italy)
2013 Jan. 04.50 UT: m1=8.2, Dia.=8’, DC=2/3; 11×70 B; Chris Wyatt (Walcha, NSW, Australia] [Coma large and diffuse showing tail to the NE (P.A. 045), 20’ in length and 11’ in width at its visible extremity. Method= S; Cat= TK]
2013 Jan. 04.48 UT: m1=7.9, Dia.=4.5′, DC=6; 12×80 B; Con Stoitsis (Rowville, Victoria, Australia) [Coma elongated, but I couldn’t make out the tail from my location]
2012 Jan. 04.45 UT: m1=8.7; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Jan. 04.45 UT: m1=8.7, Dia.=4.6’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Tail extends to NE, broad, more tail visible along the north-west side, inner coma bright but diffuse and offset to WSW by a small faint pseudo nucleus. Method= M; Cat= TK]
2013 Jan. 04.18 UT: m1=8,9, Dia.=5′, DC=5; 20×100 B; Douglas Marín (Ciudad Bolívar, Bolívar, Venezuela)
2013 Jan. 04.04 UT: m1=8.7, Dia.=3′, DC=4; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 04.04 UT: m1=8.9 (M), Dia.=5′, DC=5; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [clouds, very near a star with m1:8.1]
2013 Jan. 03.98 UT: m1=9.0 (M), Dia=5´, DC=3; 20X80 B; Jesús Guerrero (Barquisimeto, Venezuela)
2013 Jan. 03.80 UT: m1=7.9, Dia.=6′, DC=4; 10×50 B; Juan José González (Aralla, alt. 1440 m, León, España) [En 20 cm SCT (77x): m1=8.2, m2=11.3 (Tycho-2). Coma asimétrica. Ancha Tail entre 20º y 70º, de longitud 0.3º en PA 40º]
2013 Jan. 03.525 UT: m1=8.4, Dia.=4′, DC=6; 11.4cm L f8 (22.5x); Rob Kaufman (Bright, Vic, Australia) [Alt 18-deg. Small bright central condensation, coma elongated, tail visible in averted vision, 10-15′ in around PA 30. Slight moonlight interference. Comparison stars checked using NOMAD1 data in ViZier; Method= M]
2013 Jan. 03.50 UT: m1=8.2, Dia.=5′, DC=6; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria, Australia) [Coma not enhanced with a Swan Band filter. Short dust tail in PA 20. Makes a pretty picture with M36, M37 and M38 in the vicinity]
2013 Jan. 03.46 UT: m1=8.6; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Jan. 03.43 UT: m1=8.3, Dia.=5.5’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Broad tail, very transparent, best visible using averted vision, 18’ in length and covers P.A. from 022 to 045. Inner coma bright and elongated to the NE with small faint pseudo nucleus offset to the SW. Does not enhance very well with Swan Band filter. Method= M; Cat= TK]
2013 Jan. 03.27 UT: m1=8.2 CCD, Dia.=3.0’, tail:5.2 PA 43°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [ comparison star 3UCAC 242-092452 mag.=16.00]
2013 Jan. 03.15 UT: m1=8.9, Dia.=3.5′, DC=6, Broad Tail:5′ Long PA:45°; 20cm T f10 SCT & 11×80 B; Jim Pryal (Ravensdale, WA; USA) [poor seeing]
2013 Jan. 03.13 UT: m1=9.2, Dia.=4′, DC=5; 11.4cm L f/8 (45x); Jorge Solano (Paseo Santaluz, San José Pinula, Guatemala) [Movimiento propio fácilmente detectado después de una hora de observación continua]
2013 Jan. 03.06 UT: m1=9.0 (M), Dia.=6′, DC=5; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [clouds, little or no change with comet filter]
2013 Jan. 02.65 UT: m1=8.5, Dia.=4.0′, DC=6/; 30cm Dobson; Con Stoitsis (Clonbinane, Victoria, Australia) [Conditions were good, some moon interference. Coma quite diffused, but obvious central brightening with averted vision. No tail]
2013 Jan. 02.510 UT: m1=8.9, Dia.=4′, DC=5/6; 11.4cm L f:8 (43x); Rob Kaufman (Bright, Vic, Australia) [Alt 13-deg. Small bright central condensation clear in averted vision; coma slightly elongated, tail not visible. Slight moonlight interference. Comparison stars checked using NOMAD1 data in ViZier; Method=M]
2013 Jan. 02.46 UT: m1=8.3, Dia.=8′, Tail=0.3 degrees, pa=20 degrees: 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Tail broad and possibly 0.5 degrees long in 25.4 reflector at 71X. Comet PApeared smaller and less condensed through Swan band filter.]
2013 Jan. 02.20 UT: m1=8.5, Dia.=4.0′, DC=6, Broad Tail:8′ Long PA:35°; 20cm T f10 SCT & 11×80 B; Jim Pryal (Ravensdale, WA; USA)
2013 Jan. 01.83 UT: m1=8.9, Dia.=4′, DC=s4; 10cm M (48x); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight]
2013 Jan. 01.757 UT: m1=7.8, Dia.=~14′, DC=2; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [altitude 40 degrees, good conditions, LM naked eye=6.0]
2013 Jan. 01.48 UT: m1=8.8, Dia.=8′, DC=5, Tail=0.13 degrees; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Faint, broad tail toward NNE direction. Comet at low elevation.]
2013 Jan. 01.47 UT: m1=8.3, Dia.=4.5’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma large with diffuse edges gradually brightening to centre to small, faint, stellar false nucleus, no tail visible but PApears elongated to NE. Swan Band filter enhances inner coma but not false nucleus. Moonlight affected. RPAid motion observed, PAproximately 7’ in 30 minute period. Method=M; Cat=TK]

C/2012 K1 (PANSTARRS)
2013 Oct. 01.09 UT: m1=14.2 CCD, Dia.=0.52′, Tail=1.0′ in PA: 93 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Sep. 07.10 UT: m1=14.1, Dia.=0.5′, DC=5; 30.5cm L f/4.9 (250x); Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA)
2013 Sep. 06.83 UT: m1=14.0, Dia.=1.0′, DC=5; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 Aug. 27.38 UT: m1=14.4 CCD, Dia.=0.67′, Tail=0.8′ in PA 116 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia)
2013 Aug. 11.13 UT: m1=14.1, Dia.=0.5′, DC=5; 30.5cm L (250x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA)
2013 Aug. 07.89 UT: m1=14.7, Dia.=0.9′, DC=6; 30cm L f/5 (167x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Motion checked over a 40-min period]
2013 Aug. 05.88 UT: m1=15.2, Dia.=0.4′, DC=3; 50.8cm L (273x); Sandor Szabo (Hungary)
2013 Aug. 04.15 UT: m1=14.1, Dia.=0.5′, DC=5; 30.5cm L (188x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Easy to see]
2013 July 29.39 UT: m1=14.6 CCD, Dia.=0.51′, Tail=0.6′ in PA 123 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.92 UT: m1=14.8, Dia.=0.4’, DC=3; 50.8cm L (250x); Sandor Szabo (Hungary) [Fainter than last time]
2013 July 08.887 UT: m1=14.3, Dia.=0,8×0,6′, DC=D6; 102cm RC telescope (338x); Gábor Sánta and Krisztián Sárneczky (Piszkéstető Observatory, Hungary) [well condensed, elliptical coma with a central disc, and a 16,5m nucleus]
2013 July 05.41 UT: m1=14.6 CCD, Dia.=0.55′, Tail=0.6′ in PA 130 deg.; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62, Remotely Siding Spring, Australia)
2013 Jun. 11.97 UT: m1=14.2, Dia.=1.3′, DC=6; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 Jun. 04.27 UT: m1=14.8 CCD, Dia.=0.62′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 May. 16.05 UT: m1=13.5, Dia.=1.0′, DC=4; 20cm SCT (133x); Juan José González (Alto del Trichero – Soto y Amio, alt. 1190 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden cercana a V1042 Her. Cielo muy claro de montaña]
2013 May  03.23 UT: m1=15.2 CCD, Dia.=0.39′, Tail=0.3′ in PA 148 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 20.36 UT: m1=15.5 CCD; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)

C/2012 J2 (LINEAR)
2013 Apr. 13.84 UT: m1=14.9, Dia.=1.0’, DC=6; 50.8cm reflector (250x); Sandor Szabo (Hungary) [Inside coma is like a disk]

C/2012 J1 (Catalina)
2013 Nov. 30.73 UT: m1=15.6: CCD, Dia.=0.4′, Tail=1.1′ in PA 292 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Oct. 03.76 UT: m1=15.7 CCD, Dia.=0.42′, Tail=0.4′ in PA: 278 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 04.78 UT: m1=15.8: CCD, Dia.=&0.4′, Tail=1.1′ in PA :274 deg.; 0.43-m f/6.8 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 03.82 UT: m1=14.9: CCD, Dia.=&0.6′ Tail=0.7′ in PA 282 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Mar. 24.00 UT: m1=14.1 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 216-009548 mag.=15.58]
2013 Jan. 27.97 UT: m1=14.3 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 217-004200 mag.=15.81]
2013 Jan. 21.09 UT: m1=14.5 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [Comparison star 3UCAC 217-003551 mag.=13.79]
2013 Jan. 11.81 UT: m1=13.8, Dia.=1.0′, DC=5; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 Jan. 06.10 UT: m1=13.5 V CCD, Dia.=1.1′; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 06.08 UT: m1=13.9 CCD, Dia.=0.9′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 05.98 UT: m1=14.98 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [radial profil model with comparison star 3UCAC 219-002129 mag.=13.57]
2013 Jan. 03.45 UT: m1=12.9, Dia.=0.8’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Small and very diffuse coma, difficult observation to make due to slight haze in atmosphere in the direction of the field. Method= S; Cat= TA]
2013 Jan. 03.08 UT: m1=13.8 CCD, Dia.=0.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 02.97 UT: m1=14.29 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 220-002069 mag.=14.38]

C/2012 F6 (Lemmon)
2013 Nov. 27.77 UT: m1=14.0, Dia.=1.0′, DC=3; 50.8cm L (307x); Sandor Szabo (Sopron, Hungary)
2013 Nov. 08.13 UT: m1=13.9, Dia.=0.5′, DC=2; 40cm L (302x); Timo Karhula (Åkesta Observatory, Västerås, Sweden)
2013 Nov. 04.99 UT: m1=14.6 CCD, Dia.=0.4’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 31.80 UT: m1=13.6, Dia.=0.8′, DC=1; 50.8 cm refl. (123x); Sandor Szabo (CsPAod, Hungary)
2013 Oct. 30.83 UT: m1=11.9, Dia.=2.3′, DC=2; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 30.76 UT: m1=12.8, Dia.=1′, DC=3; 32cm L f/5 (120x); Uwe Pilz (Leipzig, Germany)
2013 Oct. 26.75 UT: m1=13.9, Dia.=0.7′, DC=3; 40.0 cm refl. (250x); Sandor Szabo (Sopron, Hungary)
2013 Oct. 13.41 UT: m1=11.7, Dia.=1.2′, DC=4; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.41 UT: m1=11.6, Dia.=1.4′, DC=3/; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.43 UT: m1=11.7, Dia.=1.4′, DC=4; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 06.96 UT: m1=11.3, Dia.=2′, DC=3/; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Oct. 05.89 UT: m1=11.2, Dia.=3′, DC=3, no Tail; 23.5cm SCT(67x); Carlos Labordena (Castellón, España)
2013 Oct. 04.813 UT: m1=12.0, Dia.=2′, DC=0; 40cm L (120x); Gabor Santa (Polaris Observatory, BudPAest, Hungary) [suburban sky]
2013 Oct. 03.97 UT: m1=12.2, Dia.=3.0′, DC=5; 50.8cm refl. (123x); Sandor Szabo (Hungary) [Tail is 10’ long to PA125deg.]
2013 Oct. 03.83 UT: m1=11.8, Dia.=2.7′, DC=4; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.81 UT: m1=12.0, Dia.=2.3′, DC=3/, Tail: 0.1 deg in PA: 110 deg.; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.11 UT: m1=[11.5 NEGATIVA; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Sep. 29.81 UT: m1=11.9, Dia.=2.2′, DC=4/, Tail: 0.1 deg in PA: 105 deg.; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 06.13 UT: m1=9.0 CCD; CCD images unfiltered; Pierre LPAorte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 4428 1132 mag.=9.373]
2013 Sep. 14.30 UT: m1=12.1, Dia.=3.3′, DC=3/; 45.7cm L f/4.2 (112x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Faint 4′ tail visible with PA 146 degrees]
2013 Sep. 13.04 UT: m1=10.7, Dia.=4′, DC=3/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Sep. 08.02 UT: m1=11.7, Dia.=2.0′, DC=4; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 07.13 UT: m1=11.7, Dia.=1.6′, DC=4; 30.5cm L f/4.9 (115x); Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA)
2013 Sep. 06.93 UT: m1=11.6, Dia.=2.2′, DC=4; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.90 UT: m1=10.9, Dia.=3.2′, DC=5, Tail:0.25 deg in PA:140 deg.; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 05.93 UT: m1=11.8, Dia.=1.5′, DC=4; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.86 UT: m1=10.8, Dia.=4.5′, DC=5; 50.8cm L (78x); Sandor Szabo (Hungary) [Wide tail is seen 5’ long]
2013 Sep. 04.88 UT: m1=11.5, Dia.=4.0′, DC=5, Tail:0.25 deg in PA:140 deg.; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 04.83 UT: m1=11.8, Dia.=1′, DC=3; 32cm L f/5 (72x); Uwe Pilz (Leipzig, Germany)
2013 Sep. 02.89 UT: m1=11.2, Dia.=3.4′, DC=4/; 20cm L (80x); Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Sep. 02.88 UT: m1=11.3, Dia.=3.9′, DC=4/; 20cm L (80x); Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Sep. 01.15 UT: m1=10.3, Dia.=4′, DC=3/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Aug. 29.90 UT: m1=11.5, Dia.=2.1′, DC=5, Tail:0.2 deg in PA:140 deg.; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 28.89 UT: m1=10.8, Dia.=4′, DC=4; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 Aug. 28.08 UT: m1=11.3, Dia.=1′, DC=4; 19cm R f/14 (100x); Isbel González González (Guayos, Sancti Spíritus, Cuba)
2013 Aug. 26.10 UT: m1=11.4, Dia.=1′, DC=4; 19cm R f/14 (100x); Isbel González González (Guayos, Sancti Spíritus, Cuba) [MALE instrumental 13.5]
2013 Aug. 25.14 UT: m1=8.9 CCD, Dia.=1’, tail:16.7′ PA:139°; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 318-066478 mag.=12.69]
2013 Aug. 22.21 UT: m1=11.3 CCD, Dia.= 0.6’; tail = 1,2 PA 144; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 445-989 mag.=9.871]
2013 Aug. 19.08 UT: m1=11.7 CCD, Dia.=1.2’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 4450-1261 mag.=9.879]
2013 Aug. 18.15 UT: m1=10.1, Dia.=4′, DC=4; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2012 Aug. 16.92 UT: m1=11.0, Dia.=3.8′, DC=5; 20cm L (80x); Artyom Novichonok (Sheltozero, Russia)
2013 Aug. 15.23 UT: m1=11.2 CCD; CCD images unfiltered; Pierre LPAorte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 445-1889 mag.=9.373]
2013 Aug. 12.16 UT: m1=11.0, Dia.=4′, DC=3; 15cm SCT f:10 (62x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Aug. 11.16 UT: m1=10.5, Dia.=2.5′, DC=4; 30.5cm L (88x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA) [Tail 6′ long with PA 160 degrees]
2013 Aug. 10.92 UT: m1=10.8, Dia.=4′ DC=2; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 Aug. 09.84 UT: m1=10.5, Dia.=2.5′, DC=3; 25.4cm L (80x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 09.83 UT: m1=10.5, Dia.=2.6′, DC=4/; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 08.83 UT: m1=10.5, Dia.=2.6′, DC=4/; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 07.96 UT: m1=9.9, Dia.=3′, DC=5, Tail=0.27 deg. in PA 166 deg.; 30cm L f/5 (60x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)
2013 Aug. 06.80 UT: m1=10.5, Dia.=2.4′, DC=4; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 06.01 UT: m1=9.9 CCD + V filter, Dia.=3.0′, DC=5, Tail 0.50 deg. in PA 165 deg.; 15cm L f/4 (4x60s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Stacking and photometry: IRIS. Catalog UCAC4 – 4 comparison stars with B-V=0.60-0.67]
2013 Aug. 06.00 UT: m1=10.5, Dia.=3.0′, DC=3, Tail=8’ long to PA 165 deg.; 50.8cm L (78x); Sandor Szabo (Hungary)
2013 Aug. 05.98 UT: m1=10.3 CCD + V filter, Dia.=1.5′, DC=6; 15cm L f/4 (6x30s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Stacking and photometry: IRIS. Catalog UCAC4 – 4 comparison stars with B-V=0.60-0.67]
2013 Aug. 05.90 UT: m1=9.9, Dia.=4.6′, DC=5; 25×100 B; Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 05.89 UT: m1=10.6, Dia.=3.8′, DC=5/; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 05.80 UT: m1=10.5, Dia.=2.2′, DC=5; 25.4cm L (37.5x, 120x, 240x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 04.73 UT: m1=10.4, Dia.=2′.7, DC=3/; 20cm L f/5 (30x); Man-To Hui [Nhut Thung Pau, Canton, China) [city lights]
2013 Aug. 04.14 UT: m1=10.4, Dia.=2.8′, DC=4/; 30.5cm L (115x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Hint of a tail visible to south]
2013 Aug. 03.96 UT: m1=9.1, Dia.=9.3′, DC=5; 10cm refractor (28x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 01.13 UT: m1=10.3 CCD, Dia.=1.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star TYCHO 4466 2025 mag.=9.94]
2013 Aug. 01.03 UT: m1=10.1, Dia.=3′, DC=4/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Aug. 01.00 UT: m1=10.8, Dia.=2.5′, DC=5/; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 July 31.80 UT: m1=10.3, Dia.=2.6′, DC=5; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 31.71 UT: m1=10.4, Dia.= 2.2′, DC=2/; 20cm L F/5 (48x); Man-To Hui (Nhut Thung Pau, Canton, China) [city lights; intermittent thin clouds; motion clearly seen in a spell of ~1 hr.]
2013 July 30.91 UT: m2=13.1 CCD, Dia.=&8.7′ Tail=19′ in PA 173 deg.; 0.15-m f/7.3 refractor + CCD; A. Novichonok & T.Prystavski (AstroCamp Observatory I89. Remotely Nerpio, Spain)
2013 July 30.80 UT: m1=10.3, Dia.=2.5′, DC=5; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 29.80 UT: m1=10.2, Dia.=2.8′, DC=5; 25.4cm L (37.5x, 80x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 28.79 UT: m1=10.3, Dia.=3′, DC=6; 25.4cmm L (37.5x, 80x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 26.92 UT: m1=10.3:, Dia.=3′, DC=2; 20.3cm L f/6 (68x); Marian Legutko (Gliwice, Poland) [slight haze, moon interfered; Sidgwick method; observation place: Medium Beskids]
2013 July 19.87 UT: m1=10.1:, Dia.=2′, DC=3; 20.3cm L f/6 (68x); Marian Legutko (Gliwice, Poland) [good transparency, moon interfered; Sidgwick method; observation place: Medium Beskids]
2013 July 18.92 UT: m1=10.0:, Dia.=2′, DC=3; 20.3cm L f/6 (68x); Marian Legutko (Gliwice, Poland) [poor transparency, moon interfered; Sidgwick method; observation place: Medium Beskids]
2013 July 18.05 UT: m1=9.2, Dia.=5′, DC=5; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20 cm SCT (77x): m1=9.3, Tail de polvo: 0.2º en PA 200º]
2013 July 18.04 UT: m1=9.0, Dia.=3.5′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 16.92 UT: m1=10.1:, Dia.=2′, DC=4; 20.3cm L f/6 (68x); Marian Legutko (Gliwice, Poland) [partly cloudy, moon interfered; Sidgwick method; observation place: Medium Beskids]
2013 July 15.98 UT: m1=9.0, Dia.=3.5′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 15.98 UT: m1=9.6, Dia.=3.5′, DC=4; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 July 13.85 UT: m1=9.6, Dia.=4′, DC=6; 25.4cm L (37.5x, 80x); Danil Sidorko (Korenovsk, Russia)
2013 July 12.94 UT: m1=9.2, Dia.=4′, DC=s5; 32cm L F/5 (48x); Uwe Pilz (Leipzig, Germany)
2013 July 11.85 UT: m1=9.3, Dia.=4′, DC=6; 25.4cm L (37.5x, 80x); Danil Sidorko (Korenovsk, Russia)
2013 July 10.86 UT: m1=9.3, Dia.=4.2′, DC=6; 25.4cm L (37.5x, 80x); Danil Sidorko (Korenovsk, Russia)
2013 July 10.00 UT: m1=8.9, Dia.=4′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 09.84 UT: m1=9.2, Dia.=3.3′, DC=5; 25.4cm L (37.5x, 80x); Danil Sidorko (Korenovsk, Russia)
2013 July 09.01 UT: m1=9.2, Dia.=5′, DC=4; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 July 09.00 UT: m1=8.8, Dia.=4′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 08.95 UT: m1=8.2, Dia.=10’, DC=2; 8×56 B; Sandor Szabo (Hungary) [In 50.8L (78x) coma is 6’, the tail is 0.5 deg to PA 195 deg.]
2013 July 07.98 UT: m1=8.8, Dia.=4′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 07.98 UT: m1=9.2, Dia.= 5′ DC=4; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 July 07.98 UT: m1=8.8 CCD + V filter, Dia.=8.9′, DC=4; 3.6cm A f/2.8 (25x4s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS. Catalog (TK) – 2 comparison stars: 8.78mag B-V=0.61 and 9.40mag B-V=0.70. The same comparison stars have been taken in the visual observation on July 07.96]
2013 July 07.96 UT: m1=8.8, Dia.=9′, DC=4; 6.8cm R f/5.8 (19x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Catalog Tycho-2 (TK), comet alt. 56 deg. NELmag=6]
2013 July 07.85 UT: m1=9.3, Dia.=4.2′, DC=6; 25.4cm L (37.5x, 48x); Danil Sidorko (Korenovsk, Russia)
2013 July 06.98 UT: m1=9.5; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 July 05.99 UT: m1=9.2, Dia.= 3′ DC=6; 42x200L; Alex Scholten (Eerbeek, Netherlands)
2013 July 05.85 UT: m1=9.5, Dia.=3.0′, DC=7; 25,4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 04.83 UT: m1=9.1, Dia.=3.1′, DC=7; 25,4cm L (37.5x, 48x); Danil Sidorko (Korenovsk, Russia)
2013 July 02.97 UT: m1=8.6, Dia.=4′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.97 UT: m1=8.6, Dia.=4′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.85 UT: m1=8.8, Dia.=4′, DC=6; 25,4cm L (37x, 48x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 01.00 UT: m1=8.2, Dia.=5′, DC=5; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20cm SCT (77x): m1=8.6, Tail de polvo: 0.1º en PA 200º]
2013 Jun. 30.73 UT: m1=8.7, Dia.=4.3′, DC=3; 20cm L F/5 (30x); Man-To Hui (Nhut Thung Pau, Canton, China) [moonlight; very close to a star of mag 8.9]
2013 Jun. 29.97 UT: m1=8.7, Dia.=6′, DC=5, Tail= 15′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Jun. 20.01 UT: m1=8.4, Dia.=4′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 19.02 UT: m1=8.4, Dia.=4′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 17.93 UT: m1=8.3, Dia.=4′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 17.02 UT: m1=8.3, Dia.=4.5′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 16.95 UT: m1=8.6 CCD + V filter, Dia.=5.3′, DC=5; 3.6cm A f/2.8 (18x4s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP530 8.35 mag and B-V=0.62, comet alt. 31.5 deg.]
2013 Jun. 16.03 UT: m1=7.7, Dia.=7′, DC=5, Tail= 20′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Jun. 15.97 UT: m1=8.3, Dia.=6′ DC=5; 15×80 B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 15.96 UT: m1=8.5 CCD + V filter, Dia.=5.3′, DC=5; 3.6cm A f/2.8 (16x4s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP530 8.35 mag and B-V=0.62. Clouds]
2013 Jun. 15.06 UT: m1=7.6, Dia.=7′, DC=5; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España ) [ En 25x100B: Tail de polvo de 0.3º en PA 200º. Tail iónica no observable]
2013 Jun. 15.01 UT: m1=8.3, Dia.=6′ DC=5; 15×80 B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 13.04 UT: m1=7.6, Dia.=4′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 12.79 UT: m1=7.4, Dia.=6.3′, DC=5; 20cm L f/5 (30x); Man-To Hui (Nhut Thung Pau, Canton, China)
2013 Jun. 12.04 UT: m1=7.5, Dia.=4′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 11.96 UT: m1=7.8, Dia.=8′, DC=2; 8×56 B; Sandor Szabo (Hungary)
2013 Jun. 10.00 UT: m1=8.2 CCD + V filter, Dia.=5.1′, DC=5; 3.6cm A f/2.8 (16x4s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP2305 7.95 mag and B-V=0.69, comet alt. 33.5 deg. Clouds and twilight]
2013 Jun. 08.99 UT: m1=7.8, Dia.= 8′ DC=3; 15x80B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 08.32 UT: m1=7.4, Dia.=6′, DC=4/; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Jun. 07.01 UT: m1=7.5, Dia.=8′, DC=5; 15x80B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 06.45 UT: m1=7.0, Dia.=5′, DC=5; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Jun. 06.36 UT: m1=7.7, Dia.=4′, DC=3; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 June 05.99 UT: m1=7.1, Dia.=4′, DC=2; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Jun. 05.36 UT: m1=7.4, Dia.=4′, DC=3; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jun. 04.09 UT: m1=7.2, Dia.=8′, DC=5, Tail: 0.6º en PA 270º; 10×50 B; Juan José González ( Alto del Castro – Aralla, alt. 1720 m, León, España) [En 25x100B: m1=7.6, Tail iónica de 0.6º en PA 270º, Tail de polvo de 0.2º en PA 200º]
2013 Jun. 03.36 UT: m1=7.5, Dia.=3′, DC=3; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jun. 02.04 UT: m1=6.7, Dia.=7′, DC=3, Tail= 15′; 11×80 B; Carlos Labordena (Castellón, España)
2013 June 01.99 UT: m1=7.2, Dia.=~10′, DC=3; 15x80B; Alex Scholten (Eerbeek, Netherlands) [altitude 15 degrees]
2013 Jun. 01.80 UT: m1=7.1, Dia.=7.8′, DC=6; 20cm reflector; Man-To Hui (Nhut Thung Pau, Canton, China) [road lights and moonlight]
2013 Jun. 01.44 UT: m1=7.0, Dia=4′, DC=5; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Jun. 01.03 UT: m1=6.8, Dia.=7′, DC=4/; 10×50 B; Juan José González (Los Barrios de Nistoso, alt. 1310 m, León, España) [Estimación realizada antes del orto lunar. Tail no observable a causa de la baja altura ( 11º ) sobre el horizonte. Cielo muy claro de montaña]
2013 May  31.82 UT: m1=7.5, Dia.=6.4′, DC=6; 20cm reflector; Man-To Hui (Nhut Thung Pau, Canton, China) [road lights and strong moonlight]
2013 May  19.06 UT: m1=6.9, Dia.=5′, DC=6; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 May  19.03 UT: m1=6.8, Dia.=4′, DC=4, Tail=0.1 deg. PA:300 deg.; 16×70 B; Uwe Pilz (Leipzig, Germany)
2013 May  18.03 UT: m1=7.4 CCD + V filter, Dia.=5.1′, DC=6; 3.6cm A f/2.8 (8x4s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV) comp. star HIP1813 7.57 mag and B-V=0.64, comet alt. 13.2 deg.]
2013 May  18.02 UT: m1=6.9, Dia.=5′, DC=7; 7×35 B; Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat. (HV), Morris’ method, crystall clear sky, comet alt. 12.1 deg.]
2013 May  17.77 UT: m1=7.1, Dia.=8.5’, DC=5; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, central condensation very broad, no tail recognisable although the coma PApears elongated to SW.]
2013 May  14.79 UT: m1=6.9, Dia.=6.5’, DC=5; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Zodiacal light interference, only one tail visible 16’ in length in P.A. 260 (PAprox.), low contrast background sky, 1° C ambient temperature]
2013 May  11.15 UT: m1=6.5, Dia.=7′, DC=5, Tail= 30′; 11×80 B; Carlos Labordena (Castellón, España)
2013 May  11.13 UT: m1=6.4, Dia.=8′, DC=5/, Tail: 0.8º en PA 260º; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España ) [ Tail iónica de 0.8º en PA 260º, Tail de polvo en abanico entre 190º y 280º, de 0.2º en PA 210º. Altura sobre el horizonte: 10º. Cielo muy claro de montaña]
2013 May  10.78 UT: m1=7.1, Dia.=5.5’, DC=5; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular with faint outer edges, gradual brightening to centre with bright but diffuse central condensation. Ion tail visible using averted vision to 20’ in P.A. 230 (PAprox.), dust tail was visible using averted vision to 13’ in length at P.A. 165 (PAprox.)]
2013 May  10.35 UT: m1=6.8, Dia.=7′, DC=5; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 May  10.35 UT: m1=7.0, Dia.=7′, DC=6, Tail=0.5º in PA=250; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 May  08.36 UT: m1=6.5, Dia.=5′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 May  07.35 UT: m1=6.5, Dia.=4′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 May  05.15 UT: m1=6.7, Dia.=7′, DC=6, no Tail; 11×80 B; Carlos Labordena (Castellón, España)
2013 May  04.15 UT: m1=6.2, Dia.=6′, DC=5/; 25×100 B; Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [Muy baja altura: 6º. Comienzo del crepúsculo astronómico. Cielo muy claro de montaña]
2013 Apr. 29.35 UT: m=6.1, Dia.=5′, DC=6; 10x50B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 16 degress, moonlight)
2013 Apr. 23.35 UT: m=6.2*, Dia.=6′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 14 degress, nautical twilight)
2013 Apr. 22.80 UT: m1=5.9, Dia.=6, DC=6; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Low elevation. Not seen using 4x40B]
2013 Apr. 22.78 UT: m1=6.1, Dia.=6.6’, DC=5; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma small but compact, hint of elongation to SSW, tail not visible, low altitude (9°), zodiacal light interference. Comparison stars=Tycho-2; Method=S; Cat=TK]
2013 Apr. 22.35 UT: m1=6.0, Dia.=7′, DC=5; 11×80 B; Willian Souza (Sao Paulo, Brazil) [comet altitude ~15 degress, nautical twilight)
2013 PAr. 21.35 UT: m1=5.4, Dia.=7′, DC=6; 7×50 B; Marco Goiato (Araçatuba, Brazil) [comet altitude: 12 degrees, sun altitude: -15 degrees, atmospheric extinction PAplied, clouds]
2013 Apr. 21.35 UT: m=6.0*, Dia.=8′, DC=7; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degress, nautical twilight)
2013 Apr. 20.35 UT: m=6.0, Dia.=8′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degress, nautical twilight)
2013 Apr. 18.35 UT: m=5.9, Dia.=7′, DC=6/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 12 degress, nautical twilight)
2013 Apr. 17.35 UT: m=5.7, Dia.=9′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 11 degress, nautical twilight)
2013 Apr. 17.35 UT: m1=5.2, Dia.=8′, DC=6/, Tail: 0.5 degrees in PA 240 deg.; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, sun altitude: – 15 degrees, atmospheric extinction PAplied]
2013 Apr. 17.35 UT: m1=5.7, Dia.=7′, DC=6; 20×80 B; Willian Souza (Sao Paulo, Brazil) [comet altitude 12 degress, nautical twilight)
2013 Apr. 16.35 UT: m1=5.4, Dia.=5′, DC=5; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, atmospheric extinction PAplied, sun altitude: -12º, nautical twilight]
2013 Apr. 16.35 UT: m1=5.7, Dia.=6′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 10 degrees, nautical twilight)
2013 Apr. 16.35 UT: m1=5.7, Dia.=7′, DC=6; 11×80 B; Willian Souza (Sao Paulo, Brazil) [comet altitude: 12 degrees, nautical twilight)
2013 Apr. 15.35 UT: m1=5.3, Dia.=5′, DC=5; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, atmospheric extinction PAplied, sun altitude: -12º, nautical twilight, clouds]
2013 Apr. 15.35 UT: m1=5.6, Dia.=8′, DC=6/; 10x50vB; Alexandre Amorim (Florianopolis, Brazil) [comet altitude: 10 degrees, nautical twilight)
2013 Apr. 10.79 UT: m1=4.9; 10×50 B; David A. J. Seargent, The Entrance, NSW, Australia) [Low elevation. Beginning of tail glimpsed while sky still relatively dark]
2013 Apr. 07.35 UT: m=5.2, Dia.=6′, DC=6/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [comet altitude 7 degress, nautical twilight)
2013 Apr. 01.35 UT: m1=6.0:, Dia.=3′, DC=8; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [comet altitude 5 degress, nautical twilight)
2013 Mar. 19.45 UT: m1=5.0, Dia.=6′, DC 4/, Tail:1.5 degrees; 11×70 B; Con Stoitsis (Clonbinane, Victoria Australia) [Not visible to the naked eye. Moon interference]
2013 Mar. 16.98 UT: m1=5.0, Dia.=8′, DC=5/6; Tail: 2°; 15×70 B; Mariano Ribas (Pardo, Pcia. de Buenos Aires, Argentina) [Cometa a 8º sobre el horizonte. Cielo despejado y buena visibilidad. Tail recta y bien definida en sus primeros 2 deg., luego resulta muy difusa. Coma marcadamente gris-verdosa]
2013 Mar. 14.41 UT: m1=4.3; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [About 3.5 – 4.0 degrees of tail visible in 25×100 binocular telescope]
2013 Mar. 12.41 UT: m1=4.3; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 12.41 UT: m1=–, Dia.=5′, DC=6, Tail:3.5 degrees; 15×80 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 11.002 TU: m1=~5.0: 12×60 B; Santiago Paolantonio (Falda del Carmen, Cba., Argentina) [altura 10 deg., sin corrección de extinción por baja altura]
2013 Mar. 10.99 UT: m1=4.5, Dia.=7′, DC=5; 20×50 B, Luis Mansilla (Rosario, Argentina)
2013 Mar. 10.42 UT: m1=4.4; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail visible to PAprox. 3 degrees in 15x80B]
2013 Mar. 09.048 UT: m1=4.8, Dia.=8′, DC=5; Tail: 1.3°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso algo azulado. Interferencia leve por polvo en suspensión]
2013 Mar. 07.95 UT: m1=4.8, Dia.=10′, DC=7, Tail: 2 degrees in PA 150°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 11 degrees, blue ionic tail, atmospheric extinction PAplied, sun altitude: -14º, nautical twilight]
2013 Mar. 07.41 UT: m1=4.4; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail glimpsed NE during times of special clarity. Spectacular sight in 25×100 binocular telescope]
2013 Mar. 07.028 UT: m1=4.6, Dia.=8’, DC=5; 20×50 B; Luis Mansilla (Rosario, Argentina) [polución lumínica moderada]
2013 Mar. 06.96 UT: m1=4.8, Dia=8′, DC=6; Tail:1.5 degrees in PA:150°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, blue ionic tail, atmospheric extinction PAplied, clouds]
2013 Mar. 06.41 UT: m1=4.3, Tail:1 degree; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail glimpsed NE to about 1 degree during times of special clarity.Comet very impressive in 15×80 B]
2013 Mar. 06.043 UT: m1=4.9, Dia.=8′, DC=5; Tail: 1.1°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso. Interferencia leve por polvo en suspensión]
2013 Mar. 05.41 UT: m1=4.3; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 05.048 UT: m1=4.8, Dia.=8′, DC=5; Tail: 3.2°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso]
2013 Mar. 04.96 UT: m1=4.2, Dia.=9’, DC=7, Tail: 30’ en PA 165º; 10X50B; Alberto Anunziato (Paraná, Argentina) [Mét. Sidgwick, Cat. Tycho II; Luces urbanas]
2013 Mar. 04.41 UT: m1=4.4; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Impressive ion tail visible to about 3.5 degrees in 15x80B. Tail possibly glimpsed NE]
2013 Mar. 03.96 UT: m1=5.1, Dia.=10′, DC=6, Tail:2 degrees in PA 150°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, blue ionic tail, atmospheric extinction PAplied]
2013 Mar. 03.41 UT: m1=4.5; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Impressive ion tail visible to about 2 degrees in 25×100 binocular telescope]
2013 Mar. 02.99 UT: m1=4.3, Dia.=10′, DC=5; 10x50B; Mariano Ribas (Buenos Aires, Argentina)
2013 Mar. 02.96 UT: m1=5.3, Dia.=10′, DC=6, Tail:1.5 degrees in PA:160°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 13 degrees, blue ionic tail, clouds]
2013 Mar. 02.95 UT: m1=5.2, Dia.=8′, DC=6; 10×50 B; Alexandre Amorim(Florianopolis,Brazil)
2013 Mar. 01.96 UT: m1=5.3, Dia.=10′, DC=6, Tail:2 degrees in PA 160°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [comet altitude: 14 degrees, blue ionic tail, atmospheric extinction PAplied]
2013 Mar. 01.95 UT: m1=5.2, Dia.=5′, DC=5; 11×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Mar. 01.94 UT: m1=5.3, Dia.=8′, DC=6; 10×50 B; Alexandre Amorim(Florianopolis,Brazil)[clouds interference]
2013 Mar. 01.00 UT: m1=4.7, Dia.=8′, DC=5; 10×50 B; Mariano Ribas (Buenos Aires, Argentina)
2013 Feb. 29.007 UT: m1=4.8, Dia.=12′, DC=6; 20×50 B; Luis Mansilla (Zona Rural de La Carolina, Argentina) [altura:20°; en 15x70B Tail iónica de 0.5 deg. en PA:150°]
2013 Feb. 28.94 UT: m1=5.2, Dia.=10′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)[light pollution and clouds interference]
2013 Feb. 27.989 UT: m1=4.5, Dia.=8′, DC=5; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:23°]
2013 Feb. 27.049 UT: m1=5.0, Dia.=8′, DC=5; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Fuerte interferencia lunar]
2013 Feb. 27.015 UT: m1=4.6, Dia.=8′, DC=5/; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 27.00 UT: m1=4.9, Dia.=10′, DC=5/6; 10x50B; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 25º sobre el horizonte. Interferencia lunar moderada. MALE: 4.5]
2013 Feb. 26.005 UT: m1=4.7, Dia.=8′, DC=5/; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 26.00 UT: m1=4.8, Dia.=7′, DC=6; 7×50 B; Marco Goiato (Araçatuba, Brasil);[ moonlight interference, clouds, comet altitude: 10 degrees, atmospheric extinction PAplied]
2013 Feb. 26.00 UT: m1=5.0, Dia.=7′, DC=5/6; 10×50 B; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 26º sobre el horizonte. Interferencia lunar. El cometa aún no se ve a naked eye en el cielo de Buenos Aires. Método: In-Out. MALE: 4.6]
2013 Feb. 25.02 UT: m1=5.1, Dia.=8′, DC=5; 10×50 B; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 27º sobre el horizonte. Interferencia lunar]
2013 Feb. 25.01 UT: m1=4.8, Dia.=9′, DC=6, Tail:30′; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 24.98 UT: m1=4.9, Dia.=8′, DC=6; 7×50 B; Marco Goiato (Araçatuba, Brasil) [moonlight interference]
2013 Feb. 24.96 UT: m1=5.2, Dia.=8′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)[light pollution and moonlight interference]
2013 Feb. 22.95 UT: m1=5.1, Dia.=8′, DC=5/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Feb. 22.02 UT: m1=4.9, Día.=10′, DC=6; 10×25 B y 20×50 B; Luis Mansilla (Rosario, Argentina) [interferencia lunar]
2013 Feb. 22.00 UT: m1=5.3, Dia.=8′, DC=5/6; 10×50 B; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 28º sobre el horizonte. Moderada interferencia lunar. Cielo despejado en zona del cometa. Método: In-Out. MALE: 4.5]
2013 Feb. 21.97 UT: m1=5.0, Dia.=5′, DC=5, 20×80 B; Willian Souza (Sao Paulo, Brazil) [moonlight]
2013 Feb. 20.98 UT: m1=4.9, Dia.=8′, DC=7; 7×50 B; Marco Goiato (Araçatuba, Brasil) [clouds, moonlight interference ]
2013 Feb. 20.94 UT: m1=5.5, Dia.=5′, DC=5; 10x50B; Alexandre Amorim (Florianopolis, Brazil) [moonlight and clouds interference]
2013 Feb. 20.50 UT: m1=5.5, Dia.=6.5′, DC=5; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Tail visible with averted vision to the SE, PAprox 15′ in length. Coma condensed centre, more diffused towards the edges. Moon interference]
2013 Feb. 20.41 UT: m1=5.5, Dia.=9.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma shows tail to the SSE 30’ in length. Method=M; Cat=TK]
2013 Feb. 19.40 UT: m1=5.5, Dia.=8.5’, DC=5/6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Tail to SSE 25’ in length, narrower than the coma, averted vision works best to view the tail. Coma condensed to the centre with very faint outer coma. Central condensation almost stellar. Comparison stars checked using Tycho-2; Method=M; Cat=TK]
2013 Feb. 17.98 UT: m1=5.4, Dia.=6′, DC=5; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Feb. 17.96 UT: m1=5.2, Dia.=10′, DC=6; 7×50 B; Marco Goiato (Araçatuba, Brasil) [clouds, moonlight interference]
2013 Feb. 17.08 UT: m1=5.4, Dia.=13’, DC=7, Tail:NO; 8X40 B; Alberto Anunziato (Oro Verde, Argentina) [Altura 18º. Corrección Extinción Atmosférica, Mét. Sidgwick, Cat. Tycho II]
2013 Feb. 17.055 UT: m1=5.2, Dia.=15′, DC=6; 20×50 B; Luis Mansilla (Rosario, Argentina) [alt.: 24 deg.. Tail de 0.7° en visión desviada]
2013 Feb. 16.49 UT: m1=4.9; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 16.09 UT: m1=5.5*, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degrees]
2013 Feb. 16.05 UT: m1=5.3, Dia.=15′, DC=6; 20×50 B; Luis Mansilla (Rosario, Argentina) [alt.: 25 deg.. Tail de 0.5° en visión desviada]
2013 Feb. 15.75 UT: m1=5.5, Dia.=15’, DC=5/6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail to SSE 1.5° in length using averted vision. Slightly affected by passing cloud. Method=M; Cat=TK]
2013 Feb. 15.58 UT: m1=5.6, Dia.=8′, DC=6; 10cm f4 refl. (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 15.50 UT: m1=5.0; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Possibly a little elongated as seen with naked eye (brightest section of tail marginally visible NE?)]
2013 Feb. 15.09 UT: m1=5.4, Dia.=13′, DC=6; 20×50 B; Luis Mansilla (Rosario, Argentina) [alt.: 23 deg.. Tail en visión desviada]
2013 Feb. 14.49 UT: m1=5.0; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail visible in 6x35B and impressive in 15x80B]
2013 Feb. 14.125 UT: m1=5.4:; 20×50 B; Luis Mansilla (Rosario, Argentina) [nubosidad alta]
2013 Feb. 13.52 UT: m1=5.5, Dia.=18’, DC=4/5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SSE, tail to SSE 27’ in length. Globular cluster 47 Tucana and the comet were within the same field of view on the 7×50’s, opposite each other but just inside the edges of FOV. Visible with naked eye as a small hazy patch of light. Method=M; Cat=TK]
2013 Feb. 13.51 UT: m1=5.1; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 13.12 UT: m1=5.5; naked eye; Mariano Ribas (Sierra de la Ventana, Buenos Aires, Argentina) [Cometa PAenas visible a ojo desnudo. Tail de 2º visible en 10×50 B. Cielo despejado y transparente. MALE 6.1]
2013 Feb. 13.083 UT: m1=5.4, Dia.=12′, DC=6/; 20×50 B; Luis Mansilla (Rosario, Argentina) [alt.: 25 deg.. Tail en visión desviada]
2013 Feb. 12.73 UT: m1=5.2; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail impressive in 25×100 B]
2013 Feb. 12.45 UT: m1=5.5, Dia.=18’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Transparent outer coma, bright inner coma with small disc-like central condensation, slight elongation to SSE. Method=M; Cat=TK]
2013 Feb. 12.37 UT: m1=5.1, Dia.=–, DC=5; naked eye; John Drummond (Gisborne, New Zealand) [Comet Lemmon can just be seen visually. Used star patterns to get a definite ID. Dark, rural location]
2013 Feb. 12.229 UT: m1=5.6, Dia.=13′, DC=6; 7×50 B; Rodolfo Ferraiuolo (San Rafael, Mendoza, Argentina)
2013 Feb. 12.083 UT: m1=5.5, Dia.=12′, DC=6; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 11.85 UT: m1=5.6, Dia.=8′, DC=6; 10cm refl. f/4 (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 11.75 UT: m1=5.5, Dia.=15′, DC=5/; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [I could almost fit 47 Tuc, and the comet in the same FOV.]
2013 Feb. 11.51 UT: m1=5.4; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail clearly visible to about 2 degrees (pa=150 degrees) in 25×100 B]
2013 Feb. 11.02 UT: m1=5.6:, Dia.=10′, DC=5; 20×50 B; Luis Mansilla (Rosario, Argentina) [bruma]
2013 Feb. 10.99 UT: m1=5.6; 10×50 B; Margarete J. Amorim (Florianopolis, Brazil)
2013 Feb. 10.97 UT: m1=5.5, Dia.=10′, DC=4/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Feb. 10.71 UT: m1=5.8, Dia.=7.5′, DC=6; 10cm f/4 refl. (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 10.27 UT: m1=5.8, Dia.=9’, DC=7, Tail: NO; 16×50 B; Mariano Peter (Oro Verde, Argentina)
2013 Feb. 10.08 UT: m1=5.6, Dia.=9’, DC=7, Tail: NO; 8×40 B; Alberto Anunziato (Oro Verde, Argentina)
2013 Feb. 10.06 UT: m1=5.8, Dia.=10′, DC=4/; 20×50 B; Luis Mansilla (Rosario, Argentina) [brumoso, nubosidad en aumento]
2013 Feb. 10.03 UT: m1=6.0, Dia.=7′, DC=5/6; 8cm Refractor f/5 (20x); Gonzalo Vargas (Cochabamba, Bolivia)
2013 Feb. 09.76 UT: m1=5.8, Dia.=6.5′, DC=6; 10cm f4 refl. (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 09.51 UT: m1=5.8, Dia.=15’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SSE, extended 15’ in direction of tail, thin transparent outer coma with broad and bright central condensation, almost stellar. Glimpses of tail to a length of 45’ away from head visible  using averted vision to SSE. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Feb. 09.25 UT: m1=5.7, Dia.=8′, DC=5; 11×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Feb. 08.63 UT: m1=5.3, Dia.=26’, DC=1; naked eye; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, visible with direct vision but best seen using averted vision. Limiting magnitude=6.6. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=TK]
2013 Feb. 08.62 UT: m1=5.7, Dia.=17’, DC=5/6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular with faint elongation of the outer coma to the West PAproximately. Bright central condensation with bright inner coma and faint transparent outer coma. Method=M; Cat=TK]
2013 Feb. 08.14 UT: m1=5.8, Dia.=12′, DC=5, Tail:0.5 deg.; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 08.09 UT: m1=5.9, Dia.=11′, DC=5/; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 07.74 UT: m1=5.9, Dia.=7′, DC=5; 10cm f4 refl. (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 07.47 UT: m1=5.6; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [About 1 degree of tail visible in 25.4cm L at 71x]
2013 Feb. 07.12 UT: m1=5.7 (M), Dia.=15′, DC=6, Tail: 1.5 degree in PA 180°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [clouds, significant improvement of the image using Swan filter in a 0.22m reflector]
2013 Feb. 07.09 UT: m1=5.9, Dia.=10′, DC=5; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 07.03 UT: m1=5.8, 10×50 B; Margarete J. Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 07.02 UT: m1=5.6, Dia.=9′, DC=5, 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 06.72 UT: m1=5.9, Dia.=7.5′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 06.68 UT: m1=5.4, Dia.=26’, DC=1/2; naked eye; Chris Wyatt (Walcha, NSW, Australia) [Moonlight affected. Visible using averted vision but was easy to locate, sometimes visible using direct vision, coma PApears as a small fuzzy spot, no tail, Swan Band filter enhances coma. Limiting magnitude=6.5. Method=S; Cat=TK]
2013 Feb. 06.66 UT: m1=5.6, Dia.=15’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma strongly condensed, fading to edges, slight elongation to NW, PApears more circular overall though, no tail visible. Method=M; Cat=TK]
2013 Feb. 06.45 UT: m1=5.6; Naked eye.; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 06.12 UT: m1=5.8, Dia.=10′, DC=5; 10×50 B; Mariano Ribas (Sierra de la Ventana, Buenos Aires, Argentina)
2013 Feb. 06.08 UT: m1=5.8, Dia.=15′, DC=6, Tail:0.3 deg.; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 05.47 UT: m1=5.9, Dia.=22’, DC=1/2; naked eye; Chris Wyatt (Walcha, NSW, Australia) [Visible in periods of good seeing as a faint round haze, sometimes PApeared stellared due to scintillation. Tail was not visible. Limiting magnitude was 6.5. Method=S; Cat=TK]
2013 Feb. 05.45 UT: m1=6.2, Dia.=15’, DC=5; 7x50B; Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to NW, bright central condensation fading to edges, strongly condensed. Method= M; Cat= TK] [Notes: C/2012 F6 also observed through my 10” f/5 dobsonian reflector at x39. The ion tail showed up as a thin filament and was traced for nearly 2 degrees before it fanned out slightly and was lost in the background. The central condensation was not stellar, it PApeared as a small densely packed packet of light surrounded by a large oval shPAed luminous haze (inner coma) tPAering to a more rounded shPAed outer coma. The inner coma tPAered back to the tail with a short fan-like extension either side of the tail]
2013 Feb. 05.32 UT: m1=6.0, Dia.=8′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 05.18 UT: m1=6.0, Dia.=6′, DC=5/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Feb. 05.08 UT: m1=5.9, Dia.=12′, DC=5, Tail:0.2 deg.; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Feb. 05.00 UT: m1=6.0 (M), Dia.=15′, DC=7, Tail: 1 degree in PA 220°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Feb. 04.46 UT: m1=5.6, Dia.=12′; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 04.51 UT: m1=5.6, Dia.=33’, DC=0/1; naked eye; Chris Wyatt (Walcha, NSW, Australia) [Comet was observed at the extreme limit of averted vision in good seeing, very large coma. Limiting magnitude was 6.0, conditions were windy with patchy decaying clouds dissipating from the escarpment (at Walcha Road, NSW, Australia), moisture in the air evident from headlights of passing cars illuminating the sky at the ground, transparency was good. Method=S; Cat=TK]
2013 Feb. 04.45 UT: m1=5.5, Dia.=9.0′, DC=4/; 11×70 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Visible to naked eye with averted vision]
2013 Feb. 04.44 UT: m1=6.2, Dia.=14.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to NW, central condensation more diffused. Method=M; Cat=TK]
2013 Feb. 04.31 UT: m1=6.0, Dia.=12′, DC=4/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Feb. 04.16 UT: m1=6.1, Dia.=12’, DC=6, Tail: no es visible; 10X50 B; Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Feb. 03.67 UT: m1=6.0, Dia.=6′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 03.47 UT: m1=5.7; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 03.47 UT: m1=5.7; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 03.26 UT: m1=7.7 CCD, Dia.=6.5′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 03.02 UT: m1=6.3, Dia.=10′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 02.26 UT: m1=6.0, Dia.=8′, DC=4/; 7×50 B; Willian Souza (Sao Paulo, Brazil)
2013 Feb. 02.25 UT: m1=7.8 CCD, Dia.=4.9′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 01.50 UT: m1=5.8, Dia.=10′, DC=4/, 11×70 B; Con Stoitsis (Echuca, Victoria, Australia) [Couldn’t see it with the naked eye, possibly due to sky conditions. Tail visible to NW, PAprox 8′ in length, and 10′ length with averted vision]
2013 Feb. 01.43 UT: m1=6.2, Dia.=12’, DC=6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to WNW, faint tail extension to WNW 10’ in length, small short PApendage PAparent to the East using averted vision. Barely visible with naked eye using averted vision in good seeing but too faint to get a reliable observation. Method=M; Cat=TK]
2013 Feb. 01.06 UT: m1=6.3, Dia.=10′, DC=5/; 20×50 B; Luis Mansilla (Rosario, Argentina)
2013 Jan. 31.98 UT: m1=6.3, Dia.=8′, DC=4/; 20×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 31.54 UT: m1=6.5, Dia.=6.5′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 31.43 UT: m1=5.9, Dia.=12’, DC=5; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 31.43 UT: m1=6.3, Dia.=10.4’, DC=6; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has faint edges using averted vision, bright inner coma with faint stellar pseudo-nucleus. Not visible with the naked eye. Coma PApears elongated NW. Method=M; Cat=TK]
2013 Jan. 30.55 UT: m1=6.5, Dia.=6.5′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia) [Observed before moon rise]
2013 Jan. 30.42 UT: m1=6.5, Dia.=9’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Difficult due to close proximity of bright star, coma edges diffuse, the inner half of the coma PApears as a broad patch of light with slight gradation to centre. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 30.31 UT: m1=6.2, Dia.=10′, DC=5/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 30.22 UT: m1=6.2, Dia.=6′, DC=5; 10×50 B; Mariano Ribas (Buenos Aires, Argentina)
2013 Jan. 30.21 UT: m1=6.3, Dia.=5′, DC=5/6; 12cm R f8.3 (26x); Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar. Método: In-Out. MALE: 4.5]
2013 Jan. 29.45 UT: m1=5.8, Dia.=7.5′, DC=4/; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Conditions- Patchy cloud cover, and moon interference. No tail visible. Coma circular. Not visible to the naked eye from my location. The comet shoud be visible to the naked eye from a dark sky once the moon gets out the way this weekend]
2013 Jan. 29.43 UT: m1=6.2, Dia.=14’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, close to bright star, coma elongated to South. Moonlight interference. Method=M; Cat=TK]
2013 Jan. 28.29 UT: m1=6.5, Dia.=10′, DC=5/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 27.27 UT: m1=6.5, Dia.=11’, DC=5, Tail: no visible; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 26.326 UT: m1=6.4, Dia.=6′, DC=4; 10×50 B; Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar moderada. Método: In-Out. MALE: 4.5]
2013 Jan. 26.312 UT: m1=6.6, Dia.=5′, DC=4; 12cm R f8.3 (26x); Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar moderada. Método: In-Out. MALE: 4.5]
2013 Jan. 26.29 UT: m1=6.7, Dia.=6′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 26.15 UT: m1=6.5, Dia.=5′, DC=6; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Jan. 25.31 UT: m1=6.5 (M), Dia.=12′, DC=5, Tail:1 degree in PA:320°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 25.12 UT: m1=6.7, Dia.=7′, DC=5; 20×60 B; Willian Souza (Santos, Brazil) [moonlight interference]
2013 Jan. 24.83 UT: m1=6.8, Dia.=7′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 24.66 UT: m1=6.6, Dia.=8’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular, slight brightening to centre, no tail. Method=M; Cat=TK]
2013 Jan. 24.45 UT: m1=6.6, Dia.=7.5′, DC=4, No tail observed; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Patchy cloud, and moon interference reduced transparency. My observation was also completed before twilight ended]
2013 Jan. 24.28 UT: m1=6.8, Dia.=7′, DC=5/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 23.78 UT: m1=6.8, Dia.=7′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 23.31 UT: m1=6.5 (M), Dia.=12′, DC=5, Tail:0.5 degrees in PA:310°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 23.27 UT: m1=6.6, Dia.=10’, DC=4, Tail: no visible; 10.5cm Maksutov-Cassegrain (45x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 22.29 UT: m1=7.0, Dia.=10′, DC=4; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 22.70 UT: m1=6.9, Dia.=7.5′, DC=4; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [The comet was obviously brighter than  a week ago]
2013 Jan. 22.70 UT: m1=7.3, Dia.=9’, DC=3/4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular, not tail, slight haze in atmosphere from passing clouds. Method=M; Cat=TK]
2013 Jan. 22.248 UT: m1=6.7, Dia.=6′, DC=4/5; 12 cm R f8.3 (26x); Mariano Ribas (Buenos Aires, Argentina) [Cometa a 53º de altura. Cielo parcialmente nublado, aunque la estimación se hizo con cielo despejado en la zona del cometa. Método: In-Out. MALE: 4.6]
2013 Jan. 21.83 UT: m1=6.8, Dia.=7′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 21.72 UT: m1=6.2; 4×40 B; David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 21.69 UT: m1=6.4; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 21.47 UT: m1=6.7; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Observed in moonlight]
2013 Jan. 21.28 UT: m1=6.9, Dia.=10′, DC=4; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 21.26 UT: m1=7.0; 7×50 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 20.69 UT: m1=7.0, Dia.=6, DC=5; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 20.27 UT: m1=7.0, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 20.25 UT: m1=6.7 (S), Dia.=12′, DC=4, Tail:0.7 degrees in PA:290°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 20.250 UT: m1=7.1, Dia.=5′, DC=4; 12cm R f8.3 (26x); Mariano Ribas (Buenos Aires, Argentina) [Cometa a 55º de altura. Cielo parcialmente nublado, aunque limpio en la zona del cometa. Buena transparencia. Método: In-Out. MALE: 4.6]
2013 Jan. 20.06 UT: m1=6.8, Dia.=6, DC=5/; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 19.72 UT: m1=7.1, Dia.=8′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Middleton Beach, W. Australia)
2013 Jan. 19.71 UT: m1=7.0, Dia.=8′, DC=4; 8×40 B; Michael Mattiazzo (Castlemaine, Victoria, Australia)
2013 Jan. 19.29 UT: m1=7.2, Dia.=10′, DC=4; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 19.28 UT: m1=7.1, Dia.=8′, DC=4/; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 19.17 UT: m1=7.1, Dia.=10′, DC=4; Tail: not observed; 20×80 B, ; Julio Nardon (Cnel. Arnold, Argentina) [Comparison stars: HYP61626 and Hyp59560, Method Sidgwick, Seeing: good]
2013 Jan. 19.14 UT: m1=6.8 (S), Dia.=12′, DC=4; Tail:0.5 degrees in PA:310°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 19.08 UT: m1=7.2, Dia.=8′, DC=4; 11×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 19.04 UT: m1=6.9, Dia.=6, DC=6; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 18.28 UT: m1=7.3, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 18.12 UT: m1=6.9 (S), Dia.=12′, DC=4, Tail:0.5 degrees in PA:310°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.09 UT: m1=7.3, Dia.=5′, DC=4; 10cm R (50x); Willian Souza (Sao Paulo, Brazil)
2013 Jan. 18.05 UT: m1=6.9, Dia.=6, DC=5/; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 17.68 UT: m1=6.9, Dia.=14’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges with slightly brighter inner coma and gradually condensing to centre as a broad patch of light, no tail. Method=M; Cat=TK]
2013 Jan. 17.28 UT: m1=7.4, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interferente]
2013 Jan. 17.05 UT: m1=7.0, Dia.=6, DC=5/; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 16.76 UT: m1=7.5, Dia.=6′, DC=5; 10cm f4 refl (20x); Andrew Pearce (Middleton Beach, W. Australia)
2013 Jan. 16.71 UT: m1=7.6, Dia.=9.5’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has a slight elongation to NW, no tail, twilight interference, thin haze in the air but not in the comets vicinity. Method=M; Cat=TK]
2013 Jan. 16.50 UT: m1=7.1, Dia.=8′, DC=4; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2013 Jan. 15.71 UT: m1=7.3, Dia.=9.6’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has a slight elongation to WNW, no tail. Method=M; Cat=TK]
2013 Jan. 15.65 UT: m1=7.1, Dia.=8′, DC=5, No tail; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Some very light cloud cover affected transparency. Coma elongation to the NW]
2013 Jan. 15.52 UT: m1=7.2; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 15.30 UT: m1=7.5, Dia.=5′, DC=4; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Jan. 14.27 UT: m1=7.5, Dia.=6′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 13.55 UT: m1=7.5, Dia.=10′, DC=6; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Coma brighter at the centre. More diffused towards the edges]
2013 Jan. 13.312 UT: m1=7.7, Dia.=4′, DC=4/5; 12 cm R f8.3 (26x); Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Buena transparecencia y visibilidad. Cometa a 68º de altura. Coma moderadamente concentrada. Método: In-Out. MALE: 4.7]
2013 Jan. 12.30 UT: m1=7.6, Dia.=6′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 13.28 UT: m1=7.5, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 12.17 UT: m1=7.1 (S), Dia.=12′, DC=4; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.66 UT: m1=7.3, Dia.=9.5’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges, circular in PApearance, gradual brightening to centre, almost stellar, no tail. Method=M; Cat=TK]
2013 Jan. 11.50 UT: m1=7.3; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Comet close to star]
2013 Jan. 11.28 UT: m1=7.9, Dia.=5′, DC=6; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 11.17 UT: m1=7.1, Dia.=12′, 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.17 UT: m1=7.3, Dia.=10′, 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 10.80 UT: m1=8.0, Dia.=6′, DC=5; 10cm L f:4 (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 10.594 UT: m1=7.8, Dia.=8′, DC=5; 11.4cm L f8 (23.5x); Rob Kaufman (Bright, Vic, Australia) [Tail not visible. Ref= NOMAD1 data in ViZier; Method=M]
2013 Jan. 10.28 UT: m1=8.0, Dia.=6′, DC=5, 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 10.11 UT: m1=7.6 (S), Dia.=7′, DC=5; 20×100 B; Marco Goiato (Araçatuba, Brasil) [clouds]
2013 Jan. 09.69 UT: m1=–, Dia.=10.5′, Tail=0.5 deg in PA 297 deg.; 15cm R + CCD; Artyom Novichonok (remotely from Nerpio, Spain)
2013 Jan. 09.30 UT: m1=10.7 CCD, Dia.=2.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.67 UT: m1=7.5, Dia.=16’, DC=4/5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, fainter at edges, PApears slightly elongated to SW, bright inner middle third of coma tPAering in brightness to the edges, no tail. Method=M; Cat=TK]
2013 Jan. 08.21 UT: m1=7.2, Dia.=12′, DC=4; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 4º. Cielo muy claro de montaña. Estrellas de comparación a la misma baja altura que el cometa]
2013 Jan. 07.69 UT: m1=7.6, Dia.=13.5’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, bright inner coma with diffuse edges, almost stellar central condensation. Method= M; Cat= TK]
2013 Jan. 07.59 UT: m1=7.3: 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 07.50 UT: m1=7.7, Dia.=15’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges, inner half of coma brighter with small peak in brightness at centre. Strongly enhances with Swan Band filter, low alt. Method= M; Cat= TK]
2013 Jan. 07.368 UT: m1=8.5, Dia.=5′, DC=4; 25cm f/4.5 (66x); Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 07.29 UT: m1=7.9, Dia.=5′, DC=4; 11×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 06.52 UT: m1=7.4, Dia.=18’, DC=3/4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse with gradual brightening to centre, almost stellar central condensation. Method=M; Cat=TK]
2013 Jan. 06.50 UT: m1=8.2, Dia.=12′, DC=3/; 11×70 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Very large coma, obvious brightening towards the centre with averted vision]
2013 Jan. 06.09 UT: m1=8.0, Dia.=7.0’, DC=3, Tail:no visible; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 05.87 UT: m1=9.1, Dia.=4′, DC=3, no Tail; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Jan. 05.53 UT: m1=8.0, Dia.=15’, DC=3; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse with gradual brightening to centre, no tail. Method= M; Cat= TK]
2013 Jan. 05.17 UT: m1=8.2 (S), Dia.=5′, DC=5; 20×100 B; Marco Goiato (Araçatuba, Brasil) [moonlight interference]
2013 Jan. 03.52 UT: m1=8.1, Dia.=6′, DC=4; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria, Australia) [large coma strongly enhanced with a SWAN band filter]
2013 Jan. 01.68 UT: m1=8.7, Dia.=4.7’, DC=6; 25cm L f:5 (x9x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse with slight but definite central brightening, does not PApear stellar, enhances strongly in Swan Band filter, moonlight affected. Method=M; Cat=TK]
2013 Jan. 01.29 UT: m1=8.6, Dia.=3′, DC=4; 7cm R (28x); Alexandre Amorim (Florianopolis,Brazil) [moonlight interference]

P/2012 B1 (PANSTARRS)
2013 July 05.38 UT: m1=15.7 CCD, Dia.=0.50′; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 11.90 UT: m1=14.6, Dia.=0.8′, DC=1; 50.8 cm L (189x); Sandor Szabo (Hungary)
2013 Jun. 05.16 UT: m1=15.6 CCD, Dia.=0.29′, Tail=0.3′ in PA 122 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 Jun. 03.97 UT: m1=13.7, Dia.=0.5′, DC=6; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña]
2013 May  02.16 UT: m1=15.7, DC=5; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 29.15 UT: m1=15.6 CCD, Dia.=0.46′, Tail=0.7′ in PA 297 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 13.86 UT: m1=14.7, Dia.=0.7’, DC=3; 50.8cm reflector (250x); Sandor Szabo (Hungary) [Easy comet, moderately condensed]
2013 Feb. 07.97 UT: m1=16.1 CCD, Dia.=0.3′, Tail=2.4′ in PA 296 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2012 A2 (LINEAR)
2013 Oct. 12.96 UT: m1=15.0: CCD, Dia.=&1.1′, Tail=1.6′ in PA 20 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [comet is close to a bright star, so coma diameter and magnitude are hard to determine precisely]
2013 Oct. 03.98 UT: m1=15.5, Dia.=0.3′, DC=4; 50.8cm refl. (307x); Sandor Szabo (Hungary) [Motion was checked in a 80 minutes period]
2013 Sep. 07.01 UT: m1=15.6, Dia.=0.3′, DC=2; 50.8cm L (307x); Sandor Szabo (Hungary) [Motion was confirmed during 20 minutes period]
2013 Jan. 15.77 UT: m1=15.1 CCD, Dia.=0.5′, Tail=0.9′ in PA 18 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 09.08 UT: m1=14.8 C CCD, Dia.=&0.4′; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)

C/2012 A1 (PANSTARRS)
2013 Jan. 15.81 UT: m1=18.1 CCD, Dia.=0.2′, Tail=0.3′ in PA 45 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2011 UF305 (LINEAR)
2013 Jan. 11.86 UT: m1=13.8, Dia.=0.6′, DC=4; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 Jan. 09.44 UT: m1=13.2 C CCD, Dia.=&1.8′, Tail=6.5′ in PA 11 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 09.22 UT: m1=15.2 CCD, Dia.=0.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.13 UT: m1=15.5 CCD, Dia.=0.7′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

P/2011 R3 (Novichonok-Gerke)
2013 Feb. 07.85 UT: m1=17.8 CCD, Dia.=0.2′, Tail=0.2′ in PA 287 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2011 R1 (McNaught)
2013 Aug. 03.36 UT: m1=15.7: CCD, Dia.=&0.6′ Tail=2.3′ in PA 167 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.89 UT: m1=14.8, Dia.=0.6’, DC=1; 50.8cm L (307x); Sandor Szabo (Hungary) [Fainter than last time]
2013 July 05.42 UT: m1=15.5 CCD, Dia.=0.81′, Tail=&7′ in PA 152 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 11.92 UT: m1=14.3, Dia.=1.3′, DC=2; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 May  28.20 UT: m1= 15.8 CCD, Dia.=0.3’, Tail= 5.2′ PA 1633°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  27.19 UT: m1= 14.7 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  15.19 UT: m1=14.0 CCD, Dia.=0.4’, Tail= 12′ PA 124°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  14.20 UT: m1=14.7 CCD, Dia.=0.4’, Tail= 4′ PA 124°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  12.03 UT: m1=12.9, Dia.=1′, DC=2, no Tail; 23.5cm SCT (188x); Carlos Labordena (Castellón, España)
2013 May  03.89 UT: m1=11.6, Dia.=1.5′, DC=1/; 32cm L f/5 (72x); Uwe Pilz (Leipzig, Germany)
2013 May  03.48 UT: m1=12.9, Dia.=1.5’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma is very diffuse and difficult to see using averted vision. Atmospheric transparency below average due to smoke from town fires.]
2013 May  02.21 UT: m1=13.5 CCD, Dia.=0.4’, Tail= 12′ PA 124°; position: 14h 13m 15.21s, +15° 52′ 08.7”; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  02.16 UT: m1=13.0, DC=2; Visual PAerture 36″ F/3.5 … Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 29.41 UT: m1=13.0, Dia.=1.5’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma very diffuse. Local sky conditions sub-average, a little hazy.]
2013 Apr. 22.73 UT: m1=12.8, Dia.=2’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, very diffuse, averted vision, does not enhance using Swan Band filter.]
2013 Apr. 22.29 UT: m1=9.7 CCD, Dia.=0.7’, Tail= 4,2′ PA 172°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 22.14 UT: m1=18.1 CCD, Dia.=0.6’, Tail= 8.2′ PA 172°; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 18.28 UT: m1=14.7 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.89 UT: m1=13.0, Dia.=2.0’, DC=3; 50.8cm reflector (189x); Sandor Szabo (Hungary)
2013 Apr. 12.19 UT: m1=[12.0; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Apr. 07.74 UT: m1=[13.0; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Apr. 07.05 UT: m1=12.4, Dia.=1′, DC=2, no Tail; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2013 Mar. 20.10 UT: m1=12.8, Dia.=1.3’, DC=2; 50.8cm L (187x); Sandor Szabo (Hungary)
2013 Mar. 09.28 UT: m1=12.3, Dia.=1′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Mar. 07.42 UT: m1=12.0, Dia.=2´, DC=2, Tail: Not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Feb. 15.81 UT: m1=12.6, Dia.=1.1′, DC=3; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Feb. 09.22 UT: m1=11.5, Dia.=2.0′, DC=3; 20cm SCT (77x); Juan José González (Peña Nebina – Ferreruela de Tábara, alt. 940 m, Zamora, España)
2013 Feb. 08.68 UT: m1=12.8, Dia.=1.7’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, close to bright star, averted vision, no tail. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=AU]
2013 Feb. 07.28 UT: m1=11.8, DC=8/; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Feb. 06.65 UT: m1=12.4, Dia.=1.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with slight brightening to centre, averted vision. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=AU]
2013 Feb. 02.28 UT: m1=11.9, DC=9; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Feb. 02.27 UT: m1=13.2 CCD, Dia.=0.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 30.30 UT: m1=12.0, DC=8/; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 20.25 UT: m1=11.2, Dia.=2.0′, DC=2; 20cm SCT (100x); Juan José González (Perilla de Castro, alt. 730 m, Zamora, España) [Altura sobre el horizonte: 10º]
2013 Jan. 09.32 UT: m1=13.7 CCD, Dia.=0.5′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

C/2011 O1 (LINEAR)
2013 Jan. 16.14 UT: m1=16.1 CCD, Dia.=0.6′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

C/2011 L4 (PANSTARRS)
2013 Nov. 04.97 UT: m1=15.0 CCD, Dia.=0.4’; CCD images unfiltered; Pierre LPAorte  (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 13.40 UT: m1=[12.6; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan) [Already too faint to see]
2013 Oct. 12.41 UT: m1=[12.9; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan) [Already too faint to see]
2013 Oct. 11.42 UT: m1=[12.6; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan) [Already too faint to see]
2013 Sep. 09.05 UT: m2=16.0 CCD, Dia.=0.4’, tail=1,8′ PA:52°; CCD images unfiltered; Stéphane Potvin (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 256-110365 mag.=15.42]
2013 Sep. 07.85 UT: m1=12.9, Dia.=2′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 07.12 UT: m1=13.0, Dia.=0.9′, DC=3; 30.5cm L f/4.9 (188x); Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA)
2013 Sep. 06.85 UT: m1=12.9, Dia.=2.1′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.84 UT: m1=13.2, Dia.=1.2′, DC=4; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 Sep. 06.83 UT: m1=13.8, Dia.=1.5′, DC=3; 35cm reflector (239x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 06.12 UT: m1=13.4 CCD, Dia.=0.9’, tail=1′ PA:66°; CCD images unfiltered; Pierre LPAorte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 258-112621 mag.=13.68]
2013 Sep. 05.85 UT: m1=12.9, Dia.=2′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.10 UT: m1=13.3 CCD, Dia.=1.2′, Tail=2.5′ in PA:110-10 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Sep. 04.82 UT: m1=13.2, Dia.=2′, DC=1; 32cm L f/5 (72x); Uwe Pilz (Leipzig, Germany)
2013 Sep. 04.82 UT: m1=13.4, Dia.=1.6′, DC=3; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 02.77 UT: m1=12.7, Dia.=0.7′, DC=3; 20cm L (222x); Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Aug. 30.06 UT: m1=13.0 CCD, Dia.=0.9’, tail=3′ PA:16°; CCD images unfiltered; Pierre LPAorte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 262-126540 mag.=13.72]
2013 Aug. 28.04 UT: m1=[12.0; 19cm R f/14 (100x); Isbel González González (Guayos, Sancti Spíritus, Cuba)
2013 Aug. 25.08 UT: m1=11.5 CCD, Dia.=0.2’, tail=1′ PA:48°; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 265-130842 mag.=14.23]
2013 Aug. 22.05 UT: m1=12.9 CCD, Dia.=0.5’, tail=1′ PA:70°; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 266-133977 mag.=13.48]
2013 Aug. 19.06 UT: m1=13.7 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 270-130671 mag.=14.37]
2013 Aug. 12.14 UT: m1=[11.5 Negativa; 15cm SCT f:10 (125x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Aug. 11.17 UT: m1=12.6, Dia.=1.5′, DC=3/; 30.5cm L (188x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA)
2013 Aug. 11.08 UT: m1=10.6 CCD, Dia.=4′ ; CCD images unfiltered; Pierre LPAorte (Cd’OA, Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 275-124348 mag.=12.74]
2013 Aug. 07.93 UT: m1=11.9, Dia.=2.2′, DC=3; 30cm L f/5 (60x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)
2013 Aug. 07.07 UT: m1=11.5 CCD, Dia.=5′ ; CCD images unfiltered; Pierre LPAorte (Cd’OA, Monts Notre-Dame, Québec, Canada) [comparison star Tycho 3477 760 mag.=11.773]
2013 Aug. 06.10 UT: m1=14.6 CCD, Dia.=1.3’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 233-196181 mag.=15.19]
2013 Aug. 05.89 UT: m1=11.7, Dia.=3.0′, DC=5, Tail=5’ long to PA 80 deg.; 50.8cm L (78x); Sandor Szabo (Hungary)
2013 Aug. 05.88 UT: m1=11.9, Dia.=2.9′, DC=3; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 04.26 UT: m1=12.9, Dia.=1.2′, DC=3; 30.5cm L (250x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [More diffuse than previous month]
2013 Aug. 01.08 UT: m1=11.5 CCD, Dia.=6’; CCD images unfiltered; Pierre LPAorte (Cd’OA, Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 283-116517 mag.=13.77]
2013 Aug. 01.00 UT: m1=10.3, Dia.=4′, DC=3/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En comparación con mi observación previa de July 18.06, el cometa muestra un mayor diámetro de coma y por ello una más brillante estimación de la m1]
2013 July 30.91 UT: m2=14.6 CCD, Dia.=&5′ Tail=9′ in PA 104-0-355 deg.; 0.15-m f/7.3 refractor + CCD; A. Novichonok & T.Prystavski (AstroCamp Observatory I89. Remotely Nerpio, Spain)
2013 July 18.06 UT: m1=10.8, Dia.=3′, DC=4; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 July 18.02 UT: m1=11.1, Dia.=2.3′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 16.02 UT: m1=11.1, Dia.=2.2′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 12.96 UT: m1=10.6, Dia.=0.7′, DC=3; 32cm L F/5 (48x); Uwe Pilz (Leipzig, Germany)
2013 July 10.85 UT: m1=10.9, Dia.=1.5′, DC=5; 25.4cm L(37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 09.96 UT: m1=10.9, Dia.=2.5′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 09.84 UT: m1=10.8, Dia.=1.8′, DC=6; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 09.00 UT: m1=10.9, Dia.=3.5′, DC=1; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 July 08.96 UT: m1=10.8, Dia.=2.5′, DC=4; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 08.94 UT: m1=11.2, Dia.=3.0’, DC=4; 50.8cm L (78x); Sandor Szabo (Hungary) [Coma is elongated to PA 95 deg, tail is very wide in 2 part, length 12’]
2013 July 08.02 UT: m1=10.8, Dia.=2.5′, DC=4; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 07.85 UT: m1=10.6, Dia.=2′, DC=5; 25.4cm L (120x, 240x); Danil Sidorko (Korenovsk, Russia)
2013 July 06.96 UT: m1=10.1; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 July 06.00 UT: m1=10.4, Dia.=~4′, DC=1; 20cm L (42x); Alex Scholten (Eerbeek, Netherlands)
2013 July 05.83 UT: m1=10.6, Dia.=3.2′, DC=5; 25.4cm L (37.5x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 04.85 UT: m1=10.5, Dia.=3.2′, DC=5; 25.4cm L (120x); Danil Sidorko (Korenovsk, Russia)
2013 July 03.58 UT: m1=10.2, Dia.=3′, DC=4; 20cm L F/5 (30x); Man-To Hui (Nhut Thung Pau, Canton, China)  [city lights]
2013 July 02.96 UT: m1=10.1, Dia.=3.5′, DC=4; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.96 UT: m1=10.1, Dia.=3.5′, DC=4; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.88 UT: m1=10.3, Dia.=4.3×2′, DC=5; 25.4cm L (48x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 July 01.01 UT: m1=10.1, Dia.=4′, DC=4, Tail: 0.2º en PA 90º; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Tail de polvo en abanico]
2013 Jun. 30.81 UT: m1=10.4, Dia.=3.5×2′, DC=6; 25.4cm L (120x); Danil Sidorko (Korenovsk, Russia)
2013 Jun. 29.92 UT: m1=10.6, Dia.=4′, DC=3, Tail= 12′; 23.5cm SCT(67x); Carlos Labordena (Castellón, España)
2013 Jun. 20.00 UT: m1=10.0, Dia.=3.5′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 19.01 UT: m1=10.0, Dia.=3′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 17.94 UT: m1=9.9, Dia.=3′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 17.01 UT: m1=9.9, Dia.=3.5′, DC=3/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 16.94 UT: m1=10.0 CCD + V filter, Dia.=5.3′, DC=5; 3.6cm A f/2.8 (17x10s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (TK), comp. star 9.56 mag and B-V=0.61, comet alt. 60 deg.]
2013 Jun. 15.99 UT: m1=9.7, Dia.=3′, DC=5, Tail= 20′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Jun. 15.96 UT: m1=9.8, Dia.=4′ DC=3; 42cm L (200x); Alex Scholten (Eerbeek, Netherlands); slightly oval coma in PA = 135 degrees
2013 Jun. 15.93 UT: m1=9.9 CCD + V filter, Dia.=5.3′, DC=5; 3.6cm A f/2.8 (15x10s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (TK), comp. star 9.56 mag and B-V=0.61. Clouds]
2013 Jun. 15.04 UT: m1=9.8, Dia.=3′, DC=6, Tail: 0.2º en PA 120º; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Tail de polvo en abanico, de 0.2º en PA 120º. AntiTail más débil, de 0.3º en PA 350º.]
2013 Jun. 15.00 UT: m1=9.2, Dia.=9′ DC=1; 15×80 B; Alex Schotlen (Eerbeek, Netherlands)
2013 Jun. 14.99 UT: m1=9.7, Dia.=5′ DC=2; 42×200 L; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 12.92 UT: m1=9.6, Dia.=3′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 11.96 UT: m1=8.8, Dia.=4′, DC=3; 8×56 B; Sandor Szabo (Hungary)
2013 Jun. 11.92 UT: m1=9.6, Dia.=3′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Jun. 09.99 UT: m1=9.7 CCD + V filter, Dia.=5.1′, DC=5; 3.6cm A f/2.8 (16x10s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (TK), comp. star 9.07 mag and B-V=0.62. Clouds and twilight]
2013 Jun. 08.99 UT: m1=9.1, Dia.=8′, DC=1; 15×80 B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 08.00 UT: m1=9.1, Dia.=6′, DC=4; 20cm L (42x); Alex Schotlen (Eerbeek, Netherlands)
2013 Jun. 06.99 UT: m1=8.9, Dia.=8′, DC=1; 15×80 B; Alex Scholten (Eerbeek, Netherlands)
2013 Jun. 06.16 UT: m1=9.0, Dia.=5′, DC=3, Tail: Not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 June 05.97 UT: m1=8.2, Dia.=4′, DC=1, Tail=0.3 deg. in PA:190 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Jun. 04.04 UT: m1=8.9, Dia.=4′, DC=5, Tail=0.6º en PA 150º; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España ) [ Tail de polvo en abanico, de 0.6º en PA 150º. AntiTail de 2.4º en PA 0º]
2013 June 02.96 UT: m1=8.1, Dia.=4’, DC=2; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 June 01.98 UT: m1=8.8, Dia.=~10′, DC=4; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 58 degrees, oval coma (part of tail included in estimation?); weak broad tail of about 0.5 degrees in PA~170-190 degrees; very weak anti-tail of about 0.7 degrees in PA~15 degrees (with 42x200L)]
2013 Jun. 01.94 UT: m1=8.7, Dia.=4′, DC=5, Tail= 35′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Jun. 01.16 UT: m1=9.0, Dia=4´, DC=3, Tail: No visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 May  31.93 UT: m1=8.7, Dia.=4′, DC=5, Tail: 0.5º en PA 185º; 25×100 B; Juan José González (Los Barrios de Nistoso, alt. 1310 m, León, España) [Tail de polvo en abanico, de 0.5º en PA 185º. AntiTail bien definida, de 3.9º en PA 15º]
2013 May  31.66 UT, m1=8.8, Dia.=3′.7, DC=5; 20cm reflector; Man-To Hui (Nhut Thung Pau, Canton, China) [road lights]
2013 May  28.98 UT: m1=9.9, Dia=2.5′, DC=4, Tail=0.3 deg in PA 200 deg., antitail 2.8 deg. in PA 40 deg.; 26cm L f:5 (x42); NiTails Biver (Ablis, France) [Again quite impressive antitail, and small coma lost in fuzy tail + ~1′ jets in PA 100-180 (x97)]
2013 May  28.97 UT: m1=8.5, Dia.=12′, DC=3, Tail=0.5 deg. in PA 220 deg., antitail 5.5 deg. in PA 45 deg.; 7×50 B; NiTails Biver (Ablis, France) [From moderately dark skies just at monnrise – impressive antitail, but I am not sure what I am measuring for the coma (most of normal tail)]
2013 May  28.92 UT: m1=8.5, Dia.=4′, DC=5, Tail: 0.6º en PA 220º; 25×100 B; Juan José González (Llamas de Rueda, alt. 1005 m, León, España) [Estimación realizada antes del orto lunar. Tail de polvo en abanico, de 0.6º en PA 220º. AntiTail bien definida, de 5.1º en PA 40º, también observable en 10x50B. Cielo muy claro de montaña.]
2013 May  20.86 UT: m1=8.8, Dia.=4′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 May  19.22 UT: m1=7.5, DC=3; Visual 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  19.04 UT: m1=8.7, Dia.=4′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 May  18.90 UT: m1=8.0, Dia.=1.5′, DC=3, Tail=0.1 deg. PA:320 deg.; 16×70 B; Uwe Pilz (Leipzig, Germany)
2013 May  18.00 UT: m1=9.0 CCD + V filter, Dia.=4.1′, DC=6; 3.6cm A f/2.8 (25x6s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP114722 8.27 mag and B-V=0.65, crystall clear sky]
2013 May  15.90 UT: m1=7.9, Dia.=6′, DC=4, Tail: 0.4º en PA 310º; 10×50 B; Juan José González (Alto del Trichero – Soto y Amio, alt. 1190 m, León, España) [En 25x100B: Tail en abanico entre 300º y 100º. Forma bien definida en dirección solar, similar a una antiTail, de longitud 1.1º en PA 90º, también observable en 10x50B]
2013 May  15.85 UT: m1=8.3, Dia.=4′, DC=3; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 May  15.15 UT: m1=7.0, DC=7; Visual 10×42 B; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  13.92 UT: m1=8.4, Dia.=~6′ DC=4; 15x80B; Alex Scholten (Eerbeek, Netherlands) [altitude 42 degrees, tail of about 0.2 degrees in PA~315 degrees; difficult visible due to nearby bright stars; comet only 13′ from Gamma Cephei]
2013 May  12.88 UT: m1=8.5, Dia.=2′, DC=d5, Tail=0.17′ PA=160°; 12cm R F/5 (15x); Uwe Pilz (Leipzig, Germany)
2013 May  11.98 UT: m1=8.7 CCD + V filter, Dia.=4.1′, DC=6, Tail: 0.68 deg. in PA 312 deg.; 3.6cm A f/2.8; Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat.(TK). Stacking and photometry in IRIS using 24x4s frames, 16dark, 12flat, 15bias. Comet alt. 44.6 deg. Antitail: 0.93 deg. in PA 100 deg.]
2013 May  11.93 UT: m1=8.3, Dia.=4′, DC=s5, Tail: 0.65 deg. in PA 316 deg.; 30cm L f/5 (60x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat.(TK), Morris’ method, comet alt. 43 deg. Antitail: 1.18 deg in PA 110 deg.]
2013 May  11.81 UT: m1=7.6, Dia.=5′, DC=5, Tail= 35′; 11×80 B; Carlos Labordena (Castellón, España)
2013 May  11.02 UT: m1=7.9, Dia.=5′, DC=4/, Tail: 0.6º en PA 320º; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20 cm SCT (77x): Tail en abanico entre 300º y 110º]
2013 May  09.91 UT: m1=8.0, Dia.=~7′ DC=3; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 38 degrees, tail of about 0.6 degrees in PA~320-15 degrees]
2013 May  09.01 UT: m1=7.8, Dia.=3.3′, DC=s5; 10cm M f/10 (40x); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Cat. (TK), Morris’ method, clear sky]
2013 May  08.95 UT: m1=8.6 CCD + V filter, Dia.=3.4′, DC=6, Tail: 0.93 deg. in PA 316 deg.; 6.8cm R f/3.8; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Cat.(AQ). Stacking and photometry in IRIS using 21x15s frames, 17dark, 15flat, 27bias. Clear sky, comet alt. 41 deg. Antitail: 1.37 deg. in PA 95 deg.]
2013 May  06.76 UT: m1=7.6, Dia.=9′, DC=6; 15×70 B; Danil Sidorko (Korenovsk, Russia)
2013 May  06.00 UT: m1=7.9, Dia.=~6′ DC=3; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 38 degrees, tail of about 0.7 degrees in PA~315-350 degrees]
2013 May  05.89 UT: m1=7.3, Dia.=10′, DC=s5; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 May  05.21 UT: m1=7.0, DC=4; Visual 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  05.11 UT: m1=7.6, Dia.=5′, DC=5, Tail= 20′; 11×80 B; Carlos Labordena (Castellón, España)
2013 May  04.21 UT: m1=6.8, DC=4; Visual 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  03.90 UT: m1=7.5, Dia.=8′, DC=s6, Tail:0.5 deg. in PA:340 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 May  03.90 UT: m1=7.3, Dia.=5′, DC=4/, Tail:0.4º en PA:330º; 10×50 B; Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [En 20 cm SCT (77x): Tail en abanico entre 310º y 100º]
2013 May  02.87 UT: m1=7.6, Dia.=~6′ DC=2; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 30 degrees, fair conditions (hazy); only hint of tail visible]
2013 May  02.08 UT: m1=14.5, DC=4; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  01.92 UT: m1=7.4, Dia.=~8′ DC=3; 15x80B; Alex Scholten (Eerbeek, Netherlands) [altitude 30 degrees, good conditions; tail of about 0.6 degrees in PA 335 degrees]
2013 Apr. 30.94 UT: m1=7.3, Dia.=~8′ DC=3; 15x80B; Alex Scholten (Eerbeek, Netherlands) [altitude 30 degrees, good conditions; tail of about 0.6 degrees in PA 340 degrees]
2013 Apr. 28.91 UT: m1=7.2, Dia.=4′, DC=5, Tail: 0.4 deg. in PA 340 deg.; 10×50 B; Juan José González (Ardoncino, alt. 875 m, León, España) [En 20 cm SCT (77x): Tail en abanico entre 330º y 100º]
2013 Apr. 28.88 UT: m1=7.6, Dia.=~8′, DC=3; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 28.0 degrees, good conditions; tail of about 0.6 degrees in PA 315-340 degrees]
2013 Apr. 28.09 UT: m1=9.1 CCD, Dia.=1.3′, DC=6; 25 cm L +CCD +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 26.08 UT: m1=7.0, Dia.=3′, DC=5/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 24.09 UT: m1=6.6, Dia.=2.5′, DC=5/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 22.83 UT: m1=7.1, Dia.=5′, DC=5, Tail: 0.22 deg. in PA 349 deg.; 20×60 B; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Cat. HV, Moonlight!]
2013 Apr. 22.82 UT: m1=7.6 CCD + V filter, Dia.=5.1′, DC=6, Tail: 0.21 deg. in PA 349 deg.; 3.6cm A f/3; Mieczyslaw Leszek Paradowski (Lublin, Poland)[Cat. HV – 5 comp. stars with B-V=(0.52-0.69) on the same frame. Processing in DeepSkyStacker-median filter using 21x2s frames, 12dark, 12flat, 15bias. Photometry in IRIS on selected green channel. Moonlight]
2013 Apr. 22.47 UT: m1=6.5, Dia.=4′, DC=6, Tail: visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Apr. 22.33 UT: m1=5.9, DC=7; Visual 7×35 B; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 22.09 UT: m1=6.4, Dia.=3′, DC=5, Tail=0.25° PA:350°; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 21.83 UT: m1=6.9, Dia.=6′, DC=S5, Tail: 0.42 deg. in PA 345 deg.; 20×60 B; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Cat. HV, Morris’ method, Crystall clear sky, Moonlight]
2013 Apr. 21.81 UT: m1=7.2 CCD + V filter, Dia.=6.1′, DC=6, Tail: 0.42 deg. in PA 345 deg.; 3.6cm A f/3; Mieczyslaw Leszek Paradowski (Lublin, Poland)[Cat. HV – 6 comp. stars with B-V=(0.52-0.69) on the same frame. Processing in DeepSkyStacker-median filter using 21x2s frames, 12dark, 12flat, 15bias. Photometry in IRIS on selected green channel. Crystall clear sky, Moonlight]
2013 Apr. 21.14 UT: m1=5.9, Dia.=4′, DC=6, Tail= 30′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Apr. 21.13 UT: m1=5.6, Dia.=4′, DC=5, Tail= 20′; naked eye; Carlos Labordena (Castellón, España)
2013 Apr. 20.91 UT: m1=7.1, Dia.=4′, DC=6/, Tail: 0.8 deg. in PA 345 deg.; 18×50 B; Timo Karhula (Virsbo, Sweden) [73% gibbous moon. Astronomical twilight]
2013 Apr. 20.89 UT: m1=7.3, Dia.=~5′, DC=2; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [altitude 21.0 degrees, fair conditions due to bright moonlight; tail of about 0.4 degrees in PA 345 degrees]
2013 Apr. 20.11 UT: m1=6.9, Dia.=5′, DC=6, Tail: 0.5º en PA 350º; 10×50 B; Juan José González (Puerto de Aralla, alt. 1530 m, León, España) [En 20 cm SCT (77x): Tail en abanico entre 330º y 100º]
2013 Apr. 19.10 UT: m1=6.0, Dia=3’, DC=3; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 PAr. 17.80 UT: m1=6.0, Dia.=2.5′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 17.80 UT: m1=6.9 CCD + V filter, Dia.=5.1′, DC=6; 3.6cm A f/3; Mieczyslaw Leszek Paradowski (Lublin, Poland)[Magnitude corrected for atmospheric extinction with ICQ “a” table; Cat. HV with 4 comp. stars with B-V in the range (0.50-0.69) on the same frame. Processing in DeepSkyStacker-median filter using 10x2s frames, 12dark, 12flat, 15bias. Photometry in IRIS on selected green channel. Moonlight (+12 C), comet alt. 19 deg]
2013 Apr. 16.83 UT: m1=6.4, Dia.=4′, DC=6; 20×60 B; Mieczyslaw Leszek Paradowski (Lublin, Poland)[Cat. HV, magnitude corrected for extinction with ICQ “average” table. Comet alt. 16.7 deg]
2013 Apr. 16.81 UT: m1=6.7 CCD + V filter, Dia.=5.3′, DC=6; 3.9cm A f/3; Mieczyslaw Leszek Paradowski (Lublin, Poland)[Magnitude corrected for atmospheric extinction with ICQ “a” table; Cat. HV with comp. stars HIP 1329 (7.43mag B-V=0.27) and HIP 2760 (7.37mag B-V=0.60) on the same frame. Processing in DeepSkyStacker-median filter using 10x2s frames, 12dark, 13flat, 27bias. Photometry in IRIS on selected green channel. Clear sky (+10 C), comet alt. 18 deg]
2013 Apr. 16.14 UT: m1=6.3 CCD, Dia=1.8’, DC=7; 25cm L +CCD +Rc filter; Toni Scarmato (Calabria, Italy)
2013 Apr. 15.80 UT: m1=5.9, Dia.=3′, DC=5; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 15.78 UT: m1=6.0, Dia.=4’, DC=3; 20×80 B; Toni Scarmato (Calabria, Italy)
2013 PAr. 15.10 UT: m1=6.3, Dia.=~5′ DC=5; 10x50B; Alex Scholten (Eerbeek, Netherlands) [altitude 26.0 degrees, good conditions, tail of about 0.6 degrees in PA 340-0 degrees]
2013 Apr. 14.82 UT: m1=–, Dia.=4, DC=6, Tail=0.3 deg. in PA=18 deg.; 16×70 B; Uwe Pilz (Leipzig, Germany)
2013 PAr. 14.81 UT: m1=6.1; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Apr. 14.78 UT: m1=6.0, Dia.=3’, DC=2; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Apr. 13.79 UT: m1=6.3, Dia.=3.0’, DC=7; 8×56 B; Sandor Szabo (Hungary)
2013 Apr. 12.83 UT: m1=6.1, Dia.=–, DC=7, Tail=0.6 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Apr. 12.46 UT: m1=6.0, Dia.=4´, DC=6; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: visible]
2013 Apr. 11.86 UT: m1=5.8, Dia.=5′, DC=6, Tail: 0.8º en PA 0º; 10×50 B; Juan José González (Dosango, alt. 590 m, Asturias, España) [En 25x100B: Tail en abanico entre 340º y 40º. Baja altura sobre el horizonte: 10º. Ubicación rural, cielo claro]
2013 Apr. 10.79 UT: m1=5.7, Dia.=5’, DC=4; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Apr. 09.79 UT: m1=5.7, Dia.=4’, DC=3; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Apr. 07.85 UT: m1=5.6, Dia.=~3′, DC=6; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [altitude 13.0 degrees, magnitude-estimate extinction-corrected with ICQ-‘average’-table; tail of about 1.1 degrees in PA 0-25 degrees]
2013 Apr. 07.79 UT: m1=5.2, Dia.=6′, DC=7, Tail 0.4 deg in PA 0 deg.; 7cm R (10x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Apr. 07.78 UT: m1=5.7 CCD, Dia.=5.3′; 3.9cm A f/3 + CCD and V filter; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Magnitude corrected for atmospheric extinction with ICQ “winter” table; Cat. HV with comp. star HIP 4205 (7.19 mag B-V=0.62) on the same frame. Processing in DeepSkyStacker-median filter using 10x2sec. frames, 12dark, 13flat, 27bias. Photometry in IRIS on selected green channel. Clear sky (-1 C), comet alt. 14.8 deg]
2013 Apr. 07.17 UT: m1=4.4, Dia.=4′, DC=8, Tail= 30′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Apr. 07.16 UT: m1=4.1, Dia.=4′, DC=7, Tail= 20′; naked eye; Carlos Labordena (Castellón, España)
2013 Apr. 07.04 UT: m1=3.8, DC=7; 10×50 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 06.83 UT: m1=5.5, Dia.=~3′, DC=6; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [altitude 14.0 degrees, fair conditions, magnitude-estimate extinction-corrected with ICQ-‘summer’-table; tail of about 0.6 degrees in PA 355-35 degrees]
2013 Apr. 06.78 UT: m1=5.6, Dia.=3’, DC=2; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Apr. 02.84 UT: m1=5.0, Dia.=~5′, DC=7; 10x50B; Alex Scholten (Eerbeek, Netherlands) [altitude 9.7 degrees, poor conditions, magnitude-estimate extinction-corrected with ICQ-‘average’-table]
2013 Apr. 02.816 UT: m1=4.6*, Dia.=3′, DC=6/, Tail: 1.3 deg. in PA 0 deg.; 10×56 B; Peter Bus (Groningen, The Netherlands) [Fan-shPAed tail spanned about PA 50-0°. Comet altitude: 14.2° Using winter table for extinction correction. Observation at the end of the Nautical Twilight]
2013 Apr. 02.78 UT: m1=4.4, Dia.=4′, DC=5; 10×50 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Apr. 01.83 UT: m1=4.7, Dia.=~5′, DC=7; 10×50 B; Alex Scholten (Eerbeek, Netherlands) [altitude 10.8 degrees, poor conditions, magnitude-estimate extinction-corrected with ICQ-‘summer’-table; tail of about 1.1 degrees in PA 5-30 degrees]
2013 Apr. 01.83 UT: m1=4.5, Dia.=2′, DC=7/, Tail: 1.3° in PA 5°; 18x50B; Timo Karhula (Virsbo, Sweden) [In the same field of view as M31. Tail spanned to about PA 40°. Comet altitude: 13.5°. Visible with naked eye. End of astronomical twilight]
2013 Apr. 01.82 UT: m1=3.5, Dia.=6′, d6, Tail: 1 deg. in PA:20 deg.; 7×50 B; Uwe Pilz (Leipzig, Germany)
2013 Apr. 01.816 UT: m1=4.5*, Dia.=3′, DC=7, Tail: 1.5 deg. in PA:5 deg.; 10×56 B; Peter Bus (Groningen, The Netherlands)
2013 Mar. 31.01 UT: m1=3.5, DC=7, tail=90′ in PA=12 deg.; 10×50 B & 20×100 B; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 30.81 UT: m1=4.4, Dia.=3.5′, DC=7, Tail:1.3º en PA:10 deg.; 10×50 B; Juan José González (Granja de Moreruela, alt. 705 m, Zamora, España) [En 25x100B: Tail en abanico entre 0º y 50º. Baja altura sobre el horizonte: 12º; elongación solar: 31º. Crepúsculo náutico. Ubicación rural, cielo claro]
2013 Mar. 30.78 UT: m1=4.0, Dia=4’, DC=7, 7x50B, Toni Scarmato (Calabria, Italy)
2013 Mar. 30.05 UT: m1=4.0, Dia.=3′, DC=7, Tail=1.0 deg in PA 020; 15×70 B; Phillip J. Creed (Wilmot, OH, USA)
2013 Mar. 27.82 UT: m1=4.2, Dia.=~5′, DC=7; 10x50B; Alex Scholtenn (Eerbeek, Netherlands) [altitude 9.8 degrees, poor conditions (cirrus, twilight, moonlight), magnitude-estimate extinction-corrected with ICQ-‘average’-table; tail about 0.8 degrees in PA 15 degrees]
2013 Mar. 27.803 UT: m1=3.7*, Dia.=3′, DC=7, Tail:>1.5 deg. in PA:15°; 10×56 B; Peter Bus (Groningen, The Netherlands) [All observations in Moonlight and at the end of the Nautical Twilight]
2013 Mar. 26.803 UT: m1=3.5*, Dia.=3′, DC=7/, Tail:1.5 deg. in PA:20°; 10×56 B; Peter Bus (Groningen, The Netherlands) [All observations in Moonlight and at the end of the Nautical Twilight]
2013 Mar. 26.17 UT: m1=4.2, Dia.=–, DC=7; 10x50B; Alex Scholten (Eerbeek, Netherlands) [altitude 7.4 degrees, poor conditions, magnitude-estimate extinction-corrected with ICQ-‘average’-table; tail about 0.8 degrees in PA 20 degrees]
2013 Mar. 25.10 UT: m1=3.5, DC=6; 10×50 B; Carl Hergenrother (Tanque Verde, AZ, USA)
2013 Mar. 24.81 UT: m1=2.8*; naked eye; Timo Karhula (Virsbo, Sweden) [DC=8, Tail:1.1° in PA:25° in 18x50B; Corrected for atmospheric extinction with ICQ winter table. Comet altitude 9°. Tail spanning from 25° – 65°. Moonlight]
2013 Mar. 24.78 UT: m1=2.8, Dia.=6′, DC=S7, Tail:0.4 deg. PA:14 deg.; 16×70 B; Uwe Pilz (Leipzig, Germany)
2013 Mar. 24.77 UT: m1=3.4*, Dia.=4′, DC=8, Tail:0.5 deg. in PA:40 deg.; naked eye; Piotr Guzik (Somniki, Poland) [The comet was slightly brighter than eta Psc and significantly fainter than alpha And. Still relatively easy to see with naked eye. The transparency of the sky was not as good as on previous occasions. In 10x50B: m1=3.5*, tail: 1.2 degrees in p.a. 40 deg. The m1 has been corrected for extinction using “Average” table values]
2013 Mar. 24.11 UT: m1=3.3, DC=7; 10×50 B; Carl Hergenrother (Tanque Verde, AZ, USA)
2013 Mar. 23.99 UT: m1=4.0 CCD; Dia.=94″; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star Tycho 1741-11995 mag.=8.021]
2013 Mar. 23.76 UT: m1=1.8, Dia.=&8′, DC=S7, Tail:3.0 deg in PA:50 deg; 7×35 B; Mieczyslaw Leszek Paradowski (Wawolnica, Poland) [Magnitude corrected for atmospheric extinction with ICQ “winter” table; Cat. HV, Alpha Ari, Alpha And; comet alt. 8.3 deg. Comet and Alpha And in FOV -comet slightly brighter in Morris’ method. Crystall clear sky (-10 C)]
2013 Mar. 23.76 UT: m1=3.1*, Dia.=4′, DC=8, Tail:0.5 deg. in PA:40 deg.; naked eye; Piotr Guzik (Somniki, Poland) [The comet was clearly brighter than eta Psc and significantly fainter than alpha And. Clearly seen with naked eye though a bit harder than six days Aug. In 10x50B: m1=3.3*, broad dust tail spanning from p.a. 20 deg. to 80 deg. I could trace it to about 1.8 degrees in p.a. 40 deg. The m1 has been corrected for extinction using “Winter” table values]
2013 Mar. 23.74 UT: m1=2.7*, Dia.=5’, DC=7; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Mar. 23.10 UT: m1=3.1, DC=7; 10×50 B; Carl Hergenrother (Tanque Verde, AZ, USA)
2013 Mar. 22.74 UT: m1=2, Dia.=3′ DC8; 12×50 B; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 22.74 UT: m1=2.5*, Dia.=5’, DC=7; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Mar. 21.795 UT: m1=2.8*, Dia.=3′, DC=8, Dust tail:1.1 deg. in PA:40°; 10×56 B; Peter Bus (Groningen, The Netherlands) [All observations in Moonlight and at the end of the Nautical Twilight]
2013 Mar. 21.75 UT: m1=1.5, Dia.=3′ DC8 tail 1°; Naked eye; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 20.82 UT: m1=2.7*, Dia.=3′, DC=8/, Tail: 0.5º en PA 35º; naked eye; Juan José González (La Unión de Campos, alt. 780 m, Valladolid, España)
2013 Mar. 20.81 UT: m1=3.1*, Dia.=2.5′, DC=8, Tail: 0.7º en PA 35º: 10x50B; Juan Jose Gonzalez (La Union de Campos, alt. 780 m, Valladolid, España) [En 25x100B: Tail en abanico entre 30º y 80º, longitud 1.7º en PA 35º. Baja altura sobre el horizonte: 10º; elongación solar: 21º. Fin del crepúsculo náutico. Alguna interferencia de la luz lunar. Magnitud corregida de extinción atmosférica mediante la tabla de invierno del ICQ. Ubicación rural, cielo claro]
2013 Mar. 20.78 UT: m1=2.9, 8×40 B; Jan Horsky (Rep. Checa)
2013 Mar. 20.77 UT: m1=2.3, Dia.=5′, DC=7/, Tail: 0.5 deg in PA 45 deg.; Naked Eye; Jakub Cerny (Rep. Checa)
2013 Mar. 20.77 UT: m1=2.6, Dia.=8′, DC=7, Tail: 2.0 deg in PA 45 deg.; 8×40 B; Jakub Cerny (Rep. Checa)
2013 Mar. 20.76 UT: m1=2.6*, Dia.=4′, DC=8, Tail:1 deg. in PA:50 deg.; naked eye; Piotr Guzik (Skawinki, Poland) [Comet easily seen with naked eye. In 10x50B the dust tail was very broad, spanning from p.a. 30 deg. to 100 deg. and significantly curved to the left. I could trace it to about 2.5 degrees. Faint, thin, straight ion (?) tail was also visible in p.a. 30 deg., PAprox. 1.5 degrees long. The sky was transparent and pretty dark – in 10x50B stars up to magn. 7.5 were seen in comet vicinity. The m1 has been corrected for extinction using “Winter” table values]
2013 Mar. 19.76 UT: m1=1.8, Dia.=5’, DC=7; naked eye; Sandor Szabo (Hungary)
2013 Mar. 20.74 UT: m1=1.5, Dia.=3′ DC7,tail 2°; 12×50 B; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 19.74 UT: m1=1.0, Dia.=3′ DC7 tail 2°; 12×50 B; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 19.74 UT: m1=1.6, Dia=7’, DC=8; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Mar. 18.00 UT: m1=2.6, Dia.=3′, DC=9, Tail:0.5-deg in PA:~50 deg.; 15×70 B; John Bortle (Brooks Obs., New York, USA)
2013 Mar. 17.99 UT: m1=2.0 CCD, Dia.=2.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star Tycho 609-1714 mag.=9.617]
2013 Mar. 17.81 UT: m1=2.2, Dia.=3′, DC=8/, Tail:0.5º en PA:55º; naked eye; Juan José González (Camposagrado, alt. 1130 m, León, España) [En 25x100B: Tail en abanico entre 45º y 70º, longitud 1.5º en PA 55º. Baja altura sobre el horizonte: 8º; elongación solar: 18º. Fin del crepúsculo náutico. Magnitud corregida de extinción atmosférica mediante la tabla de invierno del ICQ. Cielo claro de montaña]
2013 Mar. 17.75 UT: m1=1.7, Dia.=–, DC=8, Tail:1.5° PA:50°; 11×70 B; Maciej Macidym (Chlebna, Poland) [Corrected for atmospheric extinction. Very good conditions. Visible in binoculars two stars around comet, a brightness of less than 6 magnitude. Ref.TK; And Alpha, Gamma Ari]
2013 Mar. 17.74 UT: m1=0.5, Dia.=2′ DC8 tail 1.5°; 12×50 B; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 17.74 UT: m1=1.4 CCD + V filter, Dia.=5.3′; 3.9cm f/3 lens; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Magnitude corrected for atmospheric extinction with ICQ “winter” table; Cat. HV with comp. star 64 Psc on the same frame. Processing and photometry in IRIS using 11dark, 13flat, 10bias. Crystall clear sky (-5 C), comet alt. 7.7 deg]
2013 Mar. 17.74 UT: m1=1.8, Dia.=3′, DC=8, Tail:1 deg. in PA.55 deg.; naked eye; Piotr Guzik (Krosno, Poland) [In 10x50B: very broad dust tail, spanning from PA 45 deg. to ~110 deg, at least 2.5 deg long in PA 55 deg. Northern edge of the tail gently curved and sharp, southern much more diffuse and shorter – about 0.5 deg. in PA 110 deg. Comet easily seen with naked eye for more than half an hour. The m1 has been corrected for extinction using “Winter” table values]
2013 Mar. 17.72 UT: m1=1.8:, Dia.=&5′, DC=7, Tail:0.4 deg.; 7×50 B; Artyom Novichonok (Petrozavodsk, Russia) [Bright still. Visible with naked eye]
2013 Mar. 16.76 UT: m1=1.7, Dia.=10′, DC=8, Tail=0.5° PA: 60°; naked eye; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Mar. 16.76 UT: m1=1.7, Dia.=5′, DC=8/, Tail: 0.5 deg in PA 60 deg.; Naked Eye.; Jakub Cerny (Rep. Checa)
2013 Mar. 16.74 UT: m1=2.3, Dia.=10′, DC=8, Tail=0.5° in P.A.=65°; 10×70 B; Maciej Macidym (Chlebna, Poland) [Magnitude estimate corrected for atmospheric extinction with ICQ “Average” table]
2013 Mar. 16.73 UT: m1=1.7*, Dia.=3′, DC=8, Tail:0.5 deg. in PA:65 deg.; naked eye; Piotr Guzik (Krosno, Poland) [In 10x50B: broad dust tail ~2 deg long. Comet easily seen with naked eye, much brighter than nearby gamma Peg (2.8 mag). The m1 has been corrected for extinction using “Average” table values]
2013 Mar. 16.10 UT: m1=1.3, DC=6; naked eye; Carl Hergenrother (U. of Arizona campus, AZ, USA)
2013 Mar. 15.80 UT: m1=2.0, Dia.=2′, DC=9, Tail: 0.5 deg. in PA:55°; Naked Eye; NiTails Biver (Pico Veleta, España) [extinction correction]
2013 Mar. 15.80 UT: m1=0.9, Dia.=4′, DC=8, Tail=40′; naked eye; Carlos Labordena (Castellón, España)
2013 Mar. 15.79 UT: m1=2.3, Dia.=2′, DC=8, tail: 0.5 deg. in PA:60°; 7×50 B; NiTails Biver (Pico Veleta, España) [extinction correction; 2.5 deg tail seen later on)
2013 Mar. 15.79 UT: m1=1.2, Dia.=4′, DC=9, Tail=50′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Mar. 15.79 UT: m1=2.3, Dia.=2′, DC=8, tail: 0.5 deg. in PA:60°; 7×50 B; NiTails Biver (Pico Veleta, España) [extinction correction; 2.5 deg tail seen later on)
2013 Mar. 15.75 UT: m1=0.0, Dia.=2′ DC8, tail 1°; 12×50 B; Giuseppe PPApa (Sicily, Italy)
2013 Mar. 15.09 UT: m1=1.4, DC=6, Tail= 0.2 deg. in PA 90 deg.; naked eye; Carl Hergenrother (Tanque Verde, AZ, USA)
2013 Mar. 14.81 UT: m1=1.8*, Dia.=2.5′, DC=7/, Tail:0.3º en PA:70º; 10×50 B; Juan José González (Morriondo, alt. 1040 m, León, España) [Muy baja altura sobre el horizonte: 6º; elongación solar: 16º. Fin del crepúsculo náutico. Magnitud corregida de extinción atmosférica mediante la tabla de invierno del ICQ. Cielo claro de montaña]
2013 Mar. 14.81 UT: m1=1.9, Dia.=3′, DC=8, tail: 0.5 deg.; Naked Eye; NiTails Biver (Pico Veleta, España) [extinction correction]
2013 Mar. 14.81 UT: m1=2.2, Dia.=2′, DC=8, tail: 2.0 deg. in PA:75°; 7×50 B; NiTails Biver (Pico Veleta, España) [extinction correction]
2013 Mar. 14.80 UT: m1=0.8, Dia.=4′, DC=8, Tail=30′; naked eye; Carlos Labordena (Castellón, España)
2013 Mar. 14.79 UT: m1=1.1, Dia.=4′, DC=9, Tail=40′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Mar. 14.79 UT: m1=0.9, Dia.=-, DC=8, Tail:0.4º; 10×50 B; José J. Chambó (Vallés, Valencia, España) [Cat=Tycho2, Met=Morris, Nautical twilight, comet altitude=5º, atmospheric extinction PAplied]
2013 Mar. 14.79 UT: m1=2.1, Dia.=1′, DC=8, tail: 1.0 deg. in PA:7°; 7×50 B; NiTails Biver (Pico Veleta, España) [extinction correction]
2013 Mar. 14.78 UT: m1=1.2, Dia.=–, DC=8; naked eye; Alex Scholten (Eerbeek, Netherlands) [altitude 4.5 degrees, good conditions, magnitude-estimate extinction-corrected with ICQ-‘winter’-table; with naked eye tail of about 0.2 degrees in PA 65 degrees; in 15x80B about 0.4 degrees]
2013 Mar. 14.76 UT: m1=1.6:, Dia.=5′, DC=7/, Tail: 1.5 deg in PA:60 deg.; 25×100 B; Jakub Cerny (Rep. Checa)
2013 Mar. 14.50 UT: m1=1.8:, DC=8, tail:0.5 deg. in PA:75 deg.; naked eye; Man-To Hui (Mt. Jizu, Yunan, China) [alt. 7.8 deg.)
2013 Mar. 14.09 UT: m1=1.4, DC=8, Tail= 0.2 deg. in PA 90 deg.; naked eye; Carl Hergenrother (Tanque Verde, AZ, USA)
2013 Mar. 13.81 UT: m1=0.9, Dia.=4′, DC=8, Tail=40′; naked eye; Carlos Labordena (Castellón, España)
2013 Mar. 13.80 UT: m1=1.2, Dia.=4′, DC=9, Tail=40′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Mar. 13.77 UT: m1=1.2, Dia.=–, DC=8; naked eye; Alex Scholten (Eerbeek, Netherlands) [altitude 4.4 degrees, good conditions, magnitude-estimate extinction-corrected with ICQ-‘winter’-table; in 15x80B tail of about 0.3 degrees in PA 65 degrees]
2013 Mar. 13.76 UT: m1=1.5; naked eye; Uwe Pilz (Leipzig, Germany) [with 7×50 B: DC:7, Tail:0.25° in PA:58°]
2013 Mar. 13.68 UT: m1=1.7:, Dia.=&5′, DC=7/; 7×50 B; Artyom Novichonok (Northern Caucasus, near Nizhniy Arkhyz, Russia)
2013 Mar. 13.67 UT: m1=1.5, Dia.=6′ DC=7; 20,3cm Catadioptric; Grishin Kirill
2013 Mar. 11.79 UT: m1=1.0, Dia.=5′, DC=8, Tail=40′; 11×80 B; Carlos Labordena (Castellón, España)
2013 Mar. 11.74 UT: m1=-1, Dia.=1′ DC9, tail 30′; Naked eye; Giuseppe PPApa (Sicily, Italy) [twilight, alt. 3°]
2013 Mar. 11.29 UT: m1=1.6, Dia.=–, DC=9, Tail: 20′ in PA:75 deg.; 15×70 B; Gabor Santa (Hármashatár-hegy, BudPAest, Hungary) [elev. 500 m above sea level. Haven’t seen to the naked eye. Narrow fan-shPAed tail]
2013 Mar. 11.10 UT: m1=2.0, Dia.=6′, DC=8, Tail: visible; 10×50 B; Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Mar. 10.96 UT: m1=1.5, Dia.=3′, DC=8/9; 15x70B; Mariano Ribas (Buenos Aires, Argentina) [Cometa observado a 5º sobre el horizonte Oeste, entre edificios, con fuerte interferencia del cielo crepuscular muy claro. Aún asi, se llegaba a PAreciar un rastro de la Tail, y una coma muy brillante y concentrada. Extinción atm. PAlicada]
2013 Mar. 10.93 UT: m1=-0.1, Dia.=–, DC=9; naked eye; Marco Goiato (Araçatuba, Brasil) [ civil twilight, sun altitude: -8º, comet altitude: 5º, atmospheric extinction PAplied, clouds ]
2013 Mar. 10.93 UT: m1=0.2, Dia.=5′, DC=8; Tail: 0.5 degree in PA:80°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [civil twilight, sun altitude: -8, comet altitude: 5º, yellow dust tail, atmospheric extinction PAplied, clouds]
2013 Mar. 10.77 UT: m1=1.4*, Dia.=2.5′, DC=8, Tail:0.3º deg. en PA:90º; 10×50 B; Juan José González (Far de Sant Sebastia – Llanfranc, alt. 170 m, Girona, España) [No visible a naked eye. Muy baja altura sobre el horizonte: 3º; elongación solar: 15º. El cometa pudo observarse en 10x50B durante 15 minutos en el crepúsculo náutico, mostrando una corta Tail de polvo. Magnitud corregida de extinción atmosférica con la tabla “media” del ICQ. Localidad cercana al nivel del mar. Cielo transparente hasta el horizonte]
2013 Mar. 10.75 UT: m1=0.5*, Dia.=7’, DC=9; naked eye; Toni Scarmato (Calabria, Italy)
2013 Mar. 10.74 UT: m1=-1, Dia.=1′, DC=9; 12×50 B; Giuseppe PPApa (Sicily, Italy) [twilight, alt. 2°]
2013 Mar. 10.73 UT: m1=-1.0, Dia.=5′, DC=9, Tail: 1 degree in PA:140°; 7×50 B; Toni Scarmato (Calabria, Italy)
2013 Mar. 10.38 UT: m1=-0.3; Dia.=2’; DC=8; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail visible to 15’ in length to the ESE. Observation made it twilight, cloud in vicinity but not interfering, altitude 1.3 degrees.  Visible naked eye, central condensation PApeared white in colour through 7×50 B’s. Extinction corrections made using ICQ ‘a’ table (Corrections likely to be too large) -> a digital image taken earlier by me was examined by Terry Lovejoy and suggests a magnitude closer to 1.5. Comparison stars: Tycho-2; Method=M; Cat=TK]
2013 Mar. 10.21 UT: m1=-1.0:, Dia.=2′, DC=8, Tail:0.25 deg. in PA:100°; 7×35 B; Mike Linnolt (Ocean View, Hawaii, USA) [Altitude 5 degrees, magnitude uncertain, comp stars were Canopus and Alpheratz, extinction estimated PAproximately]
2013 Mar. 08.967 UT: m1=1.2:, Dia.=4´, DC=8/; 20x80B; Luis Mansilla (La Carolina, Sta. Fe, Argentina) [breve observación entre nubosidad en aumento, extinción PAlicada, coma muy condensada con gran condensación central con Tail bien visible a pesar de las nubes que lo cruzaban]
2013 Mar. 08.96 UT: m1:~1.2, Dia=4′, DC=8/9, Tail:15′ tenue; 20×80 B; Julio Nardon (Alvear, Argentina) [cometa brillante, con coma cuasi estelar. Observación dificultosa por condiciones meteorológica malas con creceiente nubosidad hacia el Oeste]
2013 Mar. 08.94 TU: m1=1.6, Dia=–, DC=9, Tail: 1º; 15×70 B; Ester Letrica (Cdad. de Buenos Aires, Argentina) (cielo despejado, polución lumínica alta, Tail color blanco amarillento algo mas oscura en la banda central)
2013 Mar. 07.96 UT: m1=1.6, Dia.=–, DC=9, Tail: 0,5º; 10×50 B; Ester Letrica (Cdad. de Buenos Aires, Argentina) (cielo con algo de nubosidad, polución lumínica alta)
2013 Mar. 07.94 UT: m1=0.1, Dia.=6′, DC=8, Tail: 1 degree in PA 110°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [civil twilight, sun altitude: -11, comet altitude: 5º, yellow dust tail, atmospheric extinction PAplied, clouds]
2013 Mar. 07.94 UT: m1=-0.3, Dia.=–, DC=8/, Tail: 0.5 degrees in PA 110°; naked eye; Marco Goiato (Araçatuba, Brasil) [ civil twilight, sun altitude: -11º, comet altitude: 5º, atmospheric extinction PAplied, clouds ]
2013 Mar. 07.388 UT: m1=1.6, Dia.=–, DC=7/8; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail to the SE, 1.8 degrees in length, twilight affected, 3.8 degrees altitude, extinction corrected using ICQ ‘a’ table. Observing site 1085m. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Mar. 06.983 UT: m1=1.0, Dia.=5’, DC=8/, Tail:1°; 20×50 B; Luis Mansilla (Rosario, Argentina) [polución lumínica moderada, extinción PAlicada]
2013 Mar. 06.93 UT: m1=-0.2, Dia=–, DC=9; naked eye; Marco Goiato (Araçatuba, Brasil) [civil twilight, sun altitude: -7º, comet altitude: 8º, atmospheric extinction PAplied, clouds]
2013 Mar. 06.93 UT: m1=0.2, Dia.=4′, DC=8, Tail:0.3 degrees in PA 120°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [civil twilight, sun altitude: -7º, comet altitude: 8º, yellow dust tail, atmospheric extinction PAplied, clouds]
2013 Mar. 06.41 UT: m1=1.7, DC=9; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Brightness compared with Beta Ceti (taken as m=2). Comparison made between remembered PApearance of comet with star when later reached same elevation. “Correction” for difference in background sky brightness necessarily subjective]
2013 Mar. 06.395 UT: m1=1.8, Dia.=–, DC=8; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail to SE, 1.5 degrees in length. Twilight affected, Alt= 1.9 degrees, extinction corrected using ICQ ‘w’ table. The central condensation PApears white through 7×50 B’s but deep yellow/reddish in colour using 11×70 B’s. Observing site 910m. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Mar. 06.003 UT: m1=2.0, Dia.=5’, DC=8, Tail:2°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tail visible a naked eye. Altura:6°. Tono amarillento-crema. Con 15×70 segunda Tail, ancha y tenue. Imagen de abanico]
2013 Mar. 05.979 UT: m1=1.9, Dia.=5, DC=8; 20×50 B; Luis Mansilla (Rosario, Argentina) [corrección por extinción]
2013 Mar. 05.969 UT: m1=2.0; a naked eye; Hebert Pistón Rodríguez (La Paz, Canelones, Uruguay)
2013 Mar. 05.958 UT: m1=2.0, Tail: 1,5°; 8×30 B; Hebert Pistón Rodríguez (La Paz, Canelones, Uruguay)
2013 Mar. 05.41 UT: m1=1.8, DC=9; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 05.395 UT: m1=1.1, Dia.=–, DC=7; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Tail visible to around 1 degree in length to the SE. Slightly curved to the South, coma stellar in PApearance with slight haze surrounding a white pseudo nucleus. Tail was tinged yellow in colour near the coma but faded to a more orange colour near the tip. Extinction corrected using ICQ ‘a’ table. Alt = 3.0 deg, twilight affected. Observing site 963m. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Mar. 05.007 UT: m1=2.2, Dia.=5’, DC=8/9, Tail:2.3°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tail visible a naked eye. Altura:7°; corrección ext. at y crepuscular. Tono amarillento-crema. Con 15×70 segunda Tail, ancha y tenue. Imagen de abanico]
2013 Mar. 04.987 UT: m1=1.7, Tail:2 deg.; a naked eye; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 04.986 UT: m1=2.0, Dia.=5, DC=8, Tail:1.5 grado; 20×50 B; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 04.41 UT: m1=2.0, DC=9, Tail:1.5 degrees; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [PAproximately 3 degrees of tail visible in 15x80B]
2013 Mar. 04.40 UT: m1=2.0, Dia.=5.5′, DC=7/; Con Stoitsis (Caulfield, Melbourne, Australia) [The comet was visible with a very short tail to the naked eye. The coma is very strong and starlike. Tail 1.5 degrees PA 160. Dust trail (type 3) 0.5 degrees in length, PA 190°, only visible in 20cm]
2013 Mar. 03.991 UT: m1=1.8, Tail:2 deg.; a naked eye; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 03.988 UT: m1=2.1, Dia.=5, DC=8, Tail:1.5 grado; 20×50 B; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 03.94 UT: m1=1.4, Dia.=5′, DC=7/, Tail:0.5 degrees in PA:140°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [nautical twilight, sun altitude: -12º, comet altitude: 6º, yellow dust tail, atmospheric extinction PAplied]
2013 Mar. 03.41 UT: m1=2.0, DC=9; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Head starlike with NE but tail visible to 0.5 – 1 degree in twilight. In 25×100 binocular telescope coma alsmost starlike with spectacular dist tail at least 2 degrees against bright twilight background sky]
2013 Mar. 02.992 UT: m1=2.2, Dia.=4, DC=8, Tail:1.3 grado; 20×50 B; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 02.97 UT: m1=2.4; naked eye; Mariano Ribas (Buenos Aires, Argentina) [El cometa es más fácil de observar a naked eye que hace un par de días. Con binoculares 10×50 se observa una Tail de al menos 1º de largo. Cielo despejado y transparente en el momento de la observación.]
2013 Mar. 02.94 UT: m1=1.8, Dia=4′, DC=7/; Tail:0.3 degrees in PA:150°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [nautical twilight, sun altitude: -13º, comet altitude: 4º, yellow dust tail, atmospheric extinction PAplied]
2013 Mar. 02.40 UT: m1=2.0, Dia=5′, DC=7/; Con Stoitsis (Caulfield, Victoria, Australia) [PAprox 5 degrees above the SW horizon. The comet seemed slightly brighter than the previous night. To the naked eye, the comet was starlike in PApearance and I could detected a short tail with direct vision. In my 11x70mm binoculars the tail was PAprox 1.5 degrees in length at 160°PA]
2013 Mar. 01.993 UT: m1=2.3, Dia.=4, DC=8, Tail:1 grado; 20×50 B; Luis Mansilla (Mina Clavero, Argentina) [corrección por extinción]
2013 Mar. 01.95 UT: m1=2.1, Dia.=4′, DC=7; Tail:0.25 degrees in PA:150°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [nautical twilight, sun altitude: -13º, comet altitude: 3º, yellow dust tail, atmospheric extinction PAplied]
2013 Mar. 01.40 UT: m1=2.4, DC=7/, Tail over 1 deg in length, PA 160°; 11×70 B; Con Stoitsis (Elwood beach, Victoria, Australia) [The comet was visible to the naked eye as a starlike object with a very short tail, which PApeared longer with averted vision]
2013 Feb. 28.99 UT: m1=2.7, Dia.=3′, DC=8; 20×50 B; Luis Mansilla (La Carolina zona rural, Argentina) [altura:4.5°, 15x70B Tail de polvo de 1.5 deg. en PA:165° a 140°. orrección por extinción]
2013 Feb. 28.99 UT: m1=2.8, Dia.=2′, DC=8/9; Tail=0,6º; 10x50B;  Mariano Ribas (Buenos Aires, Argentina) [Cometa ya visible a ojo desnudo en Buenos Aires, a pesar de su baja altura, el brillo del cielo crespuscular y la contaminación luminosa. Notable abrillantamiento en los últimos dos días. Observado a 8º sobre el horizonte. Corrección por extinción atmosférica]
2013 Feb. 28.41 UT: m1=2.6, Dia.=~5′, DC=7; naked eye; Michael Mattiazzo (Castlemaine, Victoria, Australia) [End of nautical twilight. At 6 degrees altitude the comet, and small portion of tail, was clearly visible with the unaided eye, PApearing marginally fainter than comparison stars Alpha Gruis (1.8) and Alpha Pavonis (1.9). In 25x100mm binoculars, the dust tail measured 1.5 degrees in PA165, with the much fainter and shorter type 3 dust trail in PA 205. The ion tail was not visible visually but is at least 2 degrees long in PA155 on a 3 minute exposusure using a canon 60Da camera and 300mm lens]
2013 Feb. 27.986 UT: m1=3.0, Dia.=3′, DC=7/, Tail:0.7° en PA:155°; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:6°]
2013 Feb. 27.007 UT: m1=~4.0, Dia.=–, DC=8/9, Tail: 35′ PA 135°; 15×70 B; Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Altura: 6°, corrección ext. at., mediana interferencia lunar y crepuscular]
2013 Feb. 26.989 UT: m1=3.3, Dia.=3′, DC=8, Tail:45′; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:5°, corrección por extinción, interferencia lunar fuerte y crepuscular]
2013 Feb. 26.98 UT: m1=3.6, Dia.=2′, DC=8/9; 10x50B; Tail: 25´; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 11º sobre el horizonte. Interferencia crepuscular. Coma extremadamente concentrada en su parte central. Color amarillento. La Tail se ve más claramente que hace unos días contra el fondo de cielo crepuscular]
2013 Feb. 25.995 UT: m1=3.6, Dia.=3′, DC=8, Tail:30′; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:4°, corrección por extinción, interferencia lunar fuerte y crepuscular]
2013 Feb. 24.992 UT: m1=3.9, Dia.=–, DC=8, Tail:30′ en abanico; 20×50 B; Luis Mansilla (Rosario, Argentina) [altura:5°, corrección por extinción, interferencia lunar fuerte y crepuscular]
2013 Feb. 24.98 UT: m1=4.0, Dia.=2′, DC=8/9; 10x50B; Mariano Ribas (Buenos Aires, Argentina) [Cometa a 10º sobre el horizonte. Interferencia lunar y crepuscular. La parte central de la coma luce extremadamente concentrada, con aspecto estelar. La Tail  se insinúa claramente a pesar del fondo de cielo relativamente brillante]
2013 Feb. 24.32 UT: m1=~3.0, Dia.=~5′, DC=5, Tail=20′ in PA=173°; 15 x 70 B; John Drummond (Gisborne, New Zealand) [Comet PANSTARRS easy to see in dusk. Nice coma and medium tail. Comparison stars – Alpha, Gamma, Delta PSA (mags 1.2, 4.2, 4.5). Comet 4 degrees altitude in the SW. Clear, bright 12 day Moon, twilight sky]
2013 Feb. 21.959 UT: m1=4.5; 20×50 B; Luis Mansilla (Rosario, Argentina) [alt.: 3°, corregida por extinción, interferencia lunar y crepuscular]
2013 Feb. 20.44 UT: m1=4.8; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Observed in bright moonlight but in clear region of sky]
2013 Feb. 20.396 UT: m1=4.7, Dia.=–, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma PApears small and elongated to the South, bright stellar central condensation with fainter outer coma maybe 1 to 2 arc-minutes in diameter. Yellow in colour, low altitude (4.0 deg). Moonlight and twilight interference as well as thin smoke haze near the horizon, extinction correction PAplied. Method=M; Cat=TK]
2013 Feb. 19.85 UT: m1=4.2, Dia.=2.5′, DC=8; 10cm f4 refl. (20x); Andrew Pearce (Nedlands, W. Australia) Comet observed PAprox 4 deg above horizon in morning sky.  Lambda and Gamma Gruis used as comparison stars as per Reinder Bouma’s chart.  No atmospheric extinction correction PAplied, although the comet and comparison stars were within a couple of degrees altitude of each other. The comet is clearly brighter than Lambda Gruis (mag 4.6)  Short broad tail 25′ long in PA 205 deg clearly visible even in a bright sky background]
2013 Feb. 19.74 UT: m1=5.0; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Humid sky. Estimate PAproximate only]
2013 Feb. 18.42 UT: m1=5.5; 4×40 B; David A. J. Seargent (The Entrance, NSW, Australia) [Observed in moonlight and some light pollution]
2013 Feb. 17.85 UT: m1=4.9, Dia.=2′, DC=8; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia) [Short tail 0.8 deg long in PA 205 deg clearly visible even in a bright sky background]
2013 Feb. 17.33 UT: m1=5.2*, Dia.=3′, DC=7, tail= 0.15 deg in PA 220°; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 9 deg, nautical twilight]
2013 Feb. 16.32 UT: m1=5.0, Dia.=4′, DC=7; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [altitude 8 deg, nautical twilight]
2013 Feb. 15.85 UT: m1=4.5, Dia.=2′, DC=7/; 10cm f4 refl. (20x); Andrew Pearce (Nedlands, W. Australia) [This comet has got quite bright over the last week or so. Short tail clearly visible even in a bright sky background]
2013 Feb. 15.75 UT: m1=5.0, Dia.=4.0′, DC 8/; 11×70 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Broad tail 0.4 length PA 230°. Very condensed centre. Just visible to the naked eye with averted vision]
2013 Feb. 15.73 UT: m1=5.0; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 14.73 UT: m1=5.0; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [PApeared to naked eye as slightly nebulous and probably elongated ‘star”]
2013 Feb. 14.33 UT: m1=5.3, Dia.=–, DC=8; 7cm R (28x); Margarete J. Amorim (Florianopolis, Brazil) [altitude 12 deg, nautical twilight]
2013 Feb. 14.32 UT: m1=5.1*, Dia.=4′, DC=7, tail=0.4 deg in PA 240°; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [altitude 10 deg, nautical twilight]
2013 Feb. 13.74 UT: m1=5.3; Naked eye; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 13.45 UT: m1=5.3, Dia.=8’, DC=7/8; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Bright central condensation, tail to WSW and broadly fans out with Northern edge of tail longer than the opposite side. Visible with naked eye but clouds and thin haze prevented making estimates. Method=M; Cat=TK]
2013 Feb. 13.32 UT: m=5.5:, Dia.=4′, DC=7, tail= 0.3 deg in PA 230; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [altitude 10 deg, nautical twilight, clouds interference]
2013 Feb. 12.74 UT: m1=5.5; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 11.85 UT: m1=5.7, Dia.=3′, DC=7; 10cm refl. f/4 (20x); Andrew Pearce (Nedlands, W. Australia) [Comet located close to a 7th mag star which made observation of the tail difficult)
2013 Feb. 11.75 UT: m1=5.2, Dia.=4.0′, DC=8/; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Very condensed starlike coma. More diffused towards the edges. Broad tail 0.45 deg in length in PA 240°. PAprox 10 degrees above the horizon, and the start of twilight, when observed]
2013 Feb. 11.32 UT: m1=5.5:, Dia.=4′, DC=7, tail= 0.3 deg in PA 250°; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [altitude 11 deg, nautical twilight, clouds interference]
2013 Feb. 10.84 UT: m1=5.7, Dia.=3.5′, DC=7; 10cm f/4 refl. (20x); Andrew Pearce (Nedlands, W. Australia) [Short broad tail clearly seen, 24′ long in PA 233 deg.]
2013 Feb. 10.74 UT: m1=5.5, Dia.=4.0′, DC=8; 11×70 B; Con Stoitsis (Caulfiield, Victoria, Australia) [Bright stellar central condensation (Starlike centre) Tail easily visible PAprox 20′ in length. At the time of observation the comet was PAprox 10 degs above SE horizon. Morning twilight interference. Not visible to the naked eye]
2013 Feb. 11.74 UT: m1=5.8; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 11.72 UT: m1=—, Dia.=3′; DC=7, Tail PAprox 1 degree; pa = 235; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 10.72 UT: m1=5.7; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Through 25×100 binocular telescope, tail PApeared of a more even intensity rather than the forked PApearance earlier in month]
2013 Feb. 09.74 UT: m1=5.3; Dia.= stellar; DC=8/9; 0.0E [Chris Wyatt, Walcha, NSW, Australia] Averted vision, coma PApears stellar in periods of good seeing, tail not visible. Limiting magnitude = 6.0 +; twilight affected, 1230m alt. Method= S; Cat= TK
2013 Feb. 09.74 UT: m1=5.7; Dia.=4.5’; DC=8; 7x50B [Chris Wyatt, Walcha, NSW, Australia] Bright stellar central condensation, tail 35’ in length and 15’ width at extremity. Method= M; Cat= TK
2013 Feb. 08.73 UT: m1=5.7; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail visible in 6×35 binoculars]
2013 Feb. 08.72 UT: m1=5.7; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 08.72 UT: m1=6.1; Dia.=8.6’; DC=7/8; 7x50B [Chris Wyatt, Walcha, NSW, Australia] Very bright stellar central condensation, tail to WSW curving to N and 30’ in length, width of tail at extremity is 16’. Method= M; Cat= TK
2013 Feb. 07.84 UT: m1=6.2; Dia.=3′; DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia) [Short broad tail clearly seen, 30′ long in PA 235 deg.]
2013 Feb. 07.73 UT: m1=5.9; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Comet glimpsed naked eye. Rather bright forked tail visible in 25×100 to about 0.5 degrees, with brightest segment strongly curving northward]
2013 Feb. 07.31 UT: m1=6.2*, Dia.=3′, DC=7/, tail=0.3 deg in PA 250°; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [nautical twilight]
2013 Feb. 06.85 UT: m1=6.3, Dia.=3′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia) [Short broad tail clearly seen, 20′ long in PA 225 deg.]
2013 Feb. 06.75 UT: m1=6.1; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Moonlight. Bright tail visible in 25×100 binocular telescope]
2013 Feb. 06.70 UT: m1=6.0, Dia.=5.0′, DC=6, Short tail PA:35°; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [Coma condensed towards the centre. Moon interference]
2013 Feb. 05.70 UT: m1=6.1, Dia.=5.5′, DC=6′; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia) [More condensed towards the centre Coma elongated to the NW]
2013 Feb. 05.32 UT: m1=5.9 (M), Dia.=5′, DC=6, Tail: 0.3 degree in PA:200°; 7×50 B; Marco Goiato (Araçatuba, Brasil) [ moonlight interference, clouds, comet altitude: 10 º, atmospheric extinction PAplied ]
2013 Feb. 05.30 UT: m1=6.3, Dia.=5′, DC=5/; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Feb. 04.32 UT: m1=6.4*, Dia.=3′, DC=7; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [nautical twilight, tail:0.1 deg in p.a.:250 using 7cm R (28x)]
2013 Feb. 02.34 UT: m1=6.3 CCD, Dia.=3′.4; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 02.31 UT: m1=6.4, Dia.=4′, DC=6, Tail:0.1 deg in PA:250°; 10cm R (70x); Willian Souza (Sao Paulo, Brazil)
2013 Feb. 02.30 UT: m1=6.4, Dia.=5′, DC=6; 20×60 B; Willian Souza (Sao Paulo, Brazil)
2013 Feb. 01.72 UT: m1=6.5, Dia.=6’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Tail to WSW, 12’ in length and curving slightly to NW, best visible using averted vision. Method=M; Cat=TK]
2013 Jan. 31.83 UT: m1=6.9, Dia.=3′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 31.72 UT: m1=6.5, Dia.=5.2’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has small stellar pseudo-nucleus, inner coma elongated to the SW with tail to the SW PAproximately 7’ in length but best visible using averted vision.Moonlight. Method=M; Cat=TK]
2013 Jan. 29.72 UT: m1=6.7, Dia.=6’, DC=3/4; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight affected obs, brightening twilight and observed through fog at times. The coma PApears circular with a hint of elongation to SW. Method=M; Cat=TK]
2013 Jan. 29.31 UT: m1=7.0, Dia.=5′, DC=6; 11×80 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Jan. 28.30 UT: m1=7.4, Dia.=1′, DC=7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 26.28 UT: m1=7.5, Dia.=1′, DC=7/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 25.32 UT: m1=7.3 (M), Dia.=4′, DC=7, Tail:0.25 degree in PA:240°; 20×100 B; Marco Goiato (Araçatuba, Brasil) [ astronomical twilight, comet altitude: 14º]
2013 Jan. 25.33 UT: m1=7.2 (S), Dia.=5′, DC=4; 7×50 B; Marco Goiato (Araçatuba, Brasil) [nautical twilight, sun altitude: -13º, comet altitude: 17º]
2013 Jan. 25.30 UT: m1=7.2, Dia.=5′, DC=5/; 25×100 B; Jose G de S Aguiar (Campinas, Brazil)
2013 Jan. 24.83 UT: m1=7.4, Dia.=2.8′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 24.74 UT: m1=7.2, Dia.=5’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Twilight, tail to WSW, fan shPAed WSW to ESE, tail more defined on the NW edge, 5’ in length on the longest side (WSW), ESE edge much shorter. Bright stellar pseudo nucleus with diffuse and fainter outer coma. Method=M; Cat=TK]
2013 Jan. 24.35 UT: m1=7.2 CCD, Dia.=2.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 24.29 UT: m1=7.5, Dia.=2′, DC=7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 23.81 UT: m1=7.5, Dia.=2.5′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 23.34 UT: m1=7.1 CCD, Dia.=2.6′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 23.32 UT: m1=7.3 (M), Dia.=5′, DC=6; 20×100 B; Marco Goiato (Araçatuba, Brasil) [clouds, astronomical twilight]
2013 Jan. 23.27 UT: m1=7.6, Dia.=3′, DC=5; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 10 deg, clouds interference]
2013 Jan. 22.73 UT; m1=7.8, Dia.=2’, DC=6; 20cm T f:10 (63x); Chris Wyatt (Walcha, NSW, Australia) [Small bright stellar pseudo nucleus, tenuous outer coma with narrow tail 9.5’ in length to the WNW, transparent extremity. Clouds in vicinity, brightening twilight. Method=M; Cat=TK]
2013 Jan. 22.31 UT: m1=7.6, Dia.=1′, DC=7; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 21.84 UT: m1=7.5, Dia.=3′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 21.72 UT: m1=7.3; 10×50 B; David A. J. Seargent (The Entrance, NSW, Australia) [Strongly condensed in 25×100 binoculars]
2013 Jan. 20.32 UT: m1=7.4 (S), Dia.=5′, DC=4/; 20×100 B; Marco Goiato (Araçatuba, Brasil) [clouds, astronomical twilight]
2013 Jan. 20.30 UT: m1=8.0, Dia.=2′, DC=7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 19.83 UT: m1=7.7, Dia.=4′, DC=7; 10cm f4 refl (20x); Andrew Pearce (Middleton Beach, W. Australia) [Coma has become very condensed with a star like false nucleus clearly visible]
2013 Jan. 19.75 UT: m1=7.6, Dia.=2.0′, DC=6; 11×70 B; Con Stoitsis (Caulfield, Victoria, Australia)
2013 Jan. 19.73 UT: m1=7.6, Dia.=2′, DC=7; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria, Australia)
2013 Jan. 19.729 UT: m1=8.2, Dia.=1.5′, DC=6, Tail:3’ in PA:260°; 11.4cm L f:8 (43x); Rob Kaufman (Bright, Vic, Australia) [Ref=NOMAD1 data in ViZier; Method=M]
2013 Jan. 19.31 UT: m1=7.6, Dia.=1′, DC=7; 20×80 B; Willian Souza (Sao Paulo, Brazil)
2013 Jan. 19.30 UT: m1=8.0, Dia.=2′, DC=7; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 18.31 UT: m1=7.4 (M), Dia.=5′, DC=5, Tail:10 arcmin in PA:260°; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.30 UT: m1=8.0, Dia.=3′, DC=6/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 17 deg, sun altitude -13 deg]
2013 Jan. 17.72 UT: m1=7.7, Dia.=6.3’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Outer coma PApears diffuse, elongated slightly to th West, small stellar central condensation. Observed in 7×50 B’s as a faint patch of light with averted vision in good seeing. Method=M; Cat=TK]
2013 Jan. 17.72 UT: m1=7.8, Dia.=2.1’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Swan band filter enhances inner coma and central condensation slightly but not the extremity of the tail. Coma PApears as a bright stellar central condensation with bright but diffused inner coma sweeping back, narrow and tPAering in brightness with faint and diffuse tail extremity which fans out slightly. Tail length 5.8′ in length to WNW. Method=M; Cat=TK]
2013 Jan. 16.73 UT: m1=7.9, Dia.=2′, DC=7; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria) [well condensed with a short dust tail in PA 280. Globular cluster NGC 6541 in same field of view PApeared significantly brighter]
2013 Jan. 14.60 UT: m1=8.6, Dia.=1.5′, DC=6/; 11×70 B; Con Stoitsis (Nagambie, Victoria, Australia) [No tail visible]
2013 Jan. 14.29 UT: m1=8.5, Dia.=2′, DC=6/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 12 deg, sun altitude -18 deg]
2013 Jan. 13.30 UT: m1=8.6, Dia.=2′, DC=6/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 12.31 UT: m1=8.7, DC=8; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 17 deg, sun altitude -11 deg]
2013 Jan. 11.72 UT: m1=8.2, Dia.=4′, DC=7; 25×100 B; David A. J. Seargent (The Entrance, NSW, Australia) [Little changed through Swan Band filter, though possibly a little fainter]
2013 Jan. 11.71 UT: m1=8.3, Dia.=3.9’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Coma slightly elongated to W PAprox., small stellar pseudo-nucleus, coma small and almost even surface brightness, no tail, low alt. Method=M; Cat=TK]
2013 Jan. 11.30 UT: m1=8.4, Dia.= 2′, DC=5; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 15 deg, sun altitude -14 deg]
2013 Jan. 10.83 UT: m1=8.6, Dia.=3′, DC=4; 10cm L f:4 (20x); Andrew Pearce (Nedlands, W. Australia]
2013 Jan 10.30 UT: m1=8.6, Dia.=1′, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 13 deg, sun altitude -15 deg, clouds interference]
2013 Jan. 09.62 UT: m1=8.1, Dia.=3′, DC=5, Tail=2′ in PA: 283°; 41cm L (59x); John Drummond (Gisborne, New Zealand) [Comet PANSTARRS easy to see. Nice coma and short tail. Comparison stars – TYC 7889197 (7.95), TYC 789365 (8.55). Comet 13 degrees altitude in the SE. Clear, no Moon, dark sky.]
2013 Jan. 08.71 UT: m1=8.4, Dia.=4.3’, DC=5/6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, coma small, faint stellar central condensation visible in periods of good seeing, low altitude. Method=M; Cat=TK]
2013 Jan. 07.72 UT: m1=8.5, Dia.=4.8’, DC=4; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, bright inner coma/central condensation with diffuse outer coma. I was able to glimpse the comet using 7x50B but not good enough to make an estimate. Method= M; Cat= TK]
2013 Jan. 07.70 UT: m1=8.6, Dia.=2.6’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Tail to WNW, small coma with elongation sweeping back to a broad looking tail with northern edge more pronounced and extended more than southern edge, moonlight. Method=M; Cat=TK]
2013 Jan. 07.70 UT: m1=8.0, Dia.=3.5′, DC=5/; 11×70 B; Con Stoitsis (Clonbinane, Victoria, Australia) [Coma brighter towards the centre. No tail observed]
2013 Jan. 07.31 UT: m1=8.0, Dia.=2′, DC=4; 10cm R (25x); Willian Souza (Sao Paulo, Brazil)
2013 Jan. 07.29 UT: m1=8.3, Dia.=1′, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 10 deg, sun altitude -16 deg, clouds interference]
2013 Jan. 06.753 UT: m1=8.4 CCD, Dia.=2.1′; 20.3cm f2.1 SCT + QHY9 8300 Unfiltered, UCAC4 R; Terry Lovejoy (Australia)
2013 Jan. 01.741 UT: m1=8.6 CCD, Dia.=1.8′; 20.3cm f2.1 SCT + QHY9 8300 Unfiltered, UCAC4 R; Terry Lovejoy (Australia)
2013 Jan. 01.71 UT: m1=8.3, Dia.=3’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight affected, low altitude. Coma has stellar central condensation in periods of good seeing. Coma enhances moderately in Swan Band filter. At x83 the coma PApears elongated to the West with a faint extension about 3’ in length using averted vision. Method=M; Cat=TK]

C/2011 J2 (LINEAR)
2013 Dec. 05.00 UT: m1=12.8, Dia.=1.2′, DC=5; 20cm SCT (133x); Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa]
2013 Nov. 27.83 UT: m1=13.5, Dia.=1.1′, DC=5; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary)
2013 Nov. 12.10 UT: m1=13.7, Dia.=1.1′, DC=4; 42cm L f:5 (162x); Martin Lehky (Czech Republic)
2013 Nov. 08.11 UT: m1=13.9, Dia.=0.8′, DC=3; 40cm L (302x); Timo Karhula (Åkesta Observatory, Västerås, Sweden)
2013 Nov. 08.05 UT: m1=13.3, Dia.=1.1′, DC=5; 50.8cm L (189x); Sandor Szabo (Sieggraben, Austria)
2013 Oct. 13.77 UT: m1=13.9, Dia.=0.9′, DC=4; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.77 UT: m1=13.4, Dia.=0.8′, DC=4; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.76 UT: m1=13.8, Dia.=0.8′, DC=3; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 04.09 UT: m1=14.4, Dia.=0.4′, DC=5; 50.8cm refl. (245x); Sandor Szabo (Hungary)
2013 Oct. 03.46 UT: m1=13.9 CCD, Dia.=0.94′, Tail=1.5′ in PA: 177 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Sep. 14.42 UT: m1=13.8, Dia.=0.6′, DC=5/; 45.7cm L f/4.2 (318x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [relatively easy to see for a faint comet; condensed]
2013 Sep. 07.05 UT: m1=14.0, Dia.=0.8′, DC=2; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 Jun. 29.16 UT: m1=15.1:CCD, Dia.=&0.5′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.) [Observations may contain uncertainty due to slight haze in air]
2013 Jun. 11.91 UT: m1=14.5, Dia.=0.5′, DC=4; 50.8cm L (189x); Sandor Szabo (Hungary)
2013 Jun. 01.15 UT: m1=14.5 CCD, Dia.=0.75′, Tail=1.3′ in PA 131 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.))
2013 May  28.09 UT: m1=15.3 CCD, Dia.=0.3’, Tail= 0,9′; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  10.96 UT: m1=14.1, Dia.=0.7′, DC=5; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña]
2013 Apr. 22.09 UT: m1=15.6 CCD, Dia.=0.5’, Tail= 0,8′ PA 124°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 04.88 UT: m1=14.5, Dia.=0.7’, DC=4; 50.8cm reflector (250x); Sandor Szabo (Sopron, Hunagry)
2013 Feb. 28.81 UT: m1=14.3, Dia.=0.6′, DC=2; 40cm reflector (250x); Sandor Szabo  (Sopron, Hunagry)
2013 Jan. 09.46 UT: m1=15.0 C CCD, Dia.=0.5′, Tail=0.5′ in PA 192 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)

C/2011 F1 (LINEAR)
2013 Sep. 27.60 UT: m1=16.0 CCD, Dia.=0.5′; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 02.77 UT: m1=15.4: CCD, Dia.=0.51′, Tail=0.6′ in PA 220 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 03.81 UT: m1=14.8 CCD, Dia.=0.74′, Tail=&7′ in PA 209 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 May 10.80 UT: m1=14.3 CCD, Dia.=0.81′, Tail=3.1′ in PA 221 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia)

C/2010 U3 (Boattini)
2013 Oct. 14.04 UT: m1=17.9 CCD, Dia.=0.34′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Aug. 11.02 UT: m1=18.6 CCD, Dia.=0.2′, Tail=0.2′ in PA 323 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 July 20.82 UT: m1=17.7 CCD, Dia.=0.33′; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)

C/2010 S1 (LINEAR)
2013 Nov. 27.75 UT: m1=12.9, Dia.=0.6′, DC=4; 50.8cm L (123x); Sandor Szabo (Sopron, Hungary)
2013 Oct. 30.81 UT: m1=12.3, Dia.=2.3′, DC=3/; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 26.74 UT: m1=13.5, Dia.=0.6′, DC=5; 40.0 cm refl. (250x); Sandor Szabo (Sopron, Hungary)
2013 Oct. 12.42 UT: m1=13.4, Dia.=0.3′, DC=4; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.44 UT: m1=13.8, Dia.=0.8′, DC=5; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 03.91 UT: m1=12.4, Dia.=1.3′, DC=4; 50.8cm refl. (189x); Sandor Szabo (Hungary)
2013 Oct. 03.84 UT: m1=12.9, Dia.=1.3′, DC=5/; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 02.88 UT: m1=11.9, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Oct. 01.83 UT: m1=13.0, Dia.=1.1′, DC=4; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.12 UT: m1=[11.5 NEGATIVA; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Sep. 29.83 UT: m1=12.7, Dia.=1.1′, DC=5; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 21.39 UT: m1=12.6 CCD, Dia.=1.4′, Tail=1.6′ in PA:44 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 14.25 UT: m1=13.2, Dia.=0.8′, DC=4; 30.5cm L f/4.9 (150x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA)
2013 Sep. 08.25 UT: m1=12.8: CCD, Dia.=1.1′, Tail=0.8′ in PA:60 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Sep. 07.88 UT: m1=13.0, Dia.=0.9′, DC=3/; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 07.16 UT: m1=13.3, Dia.=0.8′, DC=4/; 30.5cm L f/4.9 (115x); Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA)
2013 Sep. 06.92 UT: m1=13.1, Dia.=1.3′, DC=4; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 06.89 UT: m1=12.7, Dia.=0.7′, DC=6; 50.8cm L (78x); Sandor Szabo (Hungary)
2013 Sep. 06.88 UT: m1=13.0, Dia.=0.9′, DC=3; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 05.88 UT: m1=13.3, Dia.=0.7′, DC=3/; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 04.90 UT: m1=13.1, Dia.=1.0′, DC=3/; 35cm reflector (239x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 02.77 UT: m1=12.7, Dia.=0.7′, DC=3; 20cm L (222x); Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Aug. 29.92 UT: m1=13.2, Dia.=0.8′, DC=3/; 35cm reflector (239x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 27.87 UT: m1=12.6 CCD + V filter, Dia.=0.5′, DC=6; 15cm L f/4 (6x30s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Stacking and photometry: IRIS. Catalog UCAC4 – 4 comparison stars with B-V=0.63-0.73]
2013 Aug. 24.13 UT: m1=13.6 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada)
2013 Aug. 19.09 UT: m1=13.9 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada)
2013 Aug. 15.24 UT: m1=14.0 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 11.15 UT: m1=13.2, Dia.=0.8′, DC=4/; 30.5cm L (250x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA)
2013 Aug. 06.81 UT: m1=12.6, Dia.=0.5′, CD=3; 25.4cm L (240x); Danil Sidorko (Korenovsk, Russia)
2013 Aug. 05.96 UT: m1=12.3, Dia.=1.0′, DC=3; 50.8cm L (78x); Sandor Szabo (Hungary)
2013 Aug. 05.92 UT: m1=12.8, Dia.=0.8′, DC=3/; 35cm reflector (239x); Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 02.41 UT UT: m1=12.7: CCD, Dia.=1.24′ Tail=1.3′ in PA 50 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T. Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 July 31.99 UT: m1=13.0, Dia.=0.8′, DC=3/; 35cm reflector (239x); Jakub Cerny (Senohraby, Czech Republic)
2013 July 17.97 UT: m1=12.1, Dia.=1.7′, DC=4; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 15.96 UT: m1=12.1, Dia.=1.8′, DC=4; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 13.85 UT: m1=13.1, Dia.=<0.5′; 25.4cm L (120x, 240x); Danil Sidorko (Korenovsk, Russia)
2013 July 09.98 UT: m1=11.9, Dia.=1.8′, DC=4; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 08.98 UT: m1=11.9, Dia.=1.8′, DC=3/; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 08.96 UT: m1=12.8, Dia.=0.8’, DC=6; 50.8cm L (250x); Sandor Szabo (Hungary) [Coma is elongated]
2013 July 08.36 UT: m1=12.9: CCD, Dia.=0.99′, Tail=1.2′ in PA 44 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 July 07.96 UT: m1=11.9, Dia.=1.7′, DC=3/; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 06.99 UT: m1=11.5, Dia.=1′, DC=s5; 32cm L F/5 (96x); Uwe Pilz (Leipzig, Germany)
2013 July 06.51 UT: m1=13.2, Dia.=0.6’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very difficult to detect even using magnification of x167, no central condensation. Comet observed at 13.4° altitude]
2013 July 03.98 UT: m1=11.8, Dia.=0.7′, DC=D8; 25cm L (133x); Gábor Sánta (Tarján, Komárom-Esztergom) [Sharp-edged coma with little haze around it.]
2013 Jun. 15.07 UT: m1=12.9, Dia.=0.7′, DC=6; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS. Cielo muy claro de montaña]
2013 Jun. 11.98 UT: m1=13.8, Dia.=0.6′, DC=7; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 May  17.74 UT: m1=13.0, Dia.=0.9’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small, diffuse edges with slightly brighter core but not stellar, no tail, averted vision.]
2013 May  14.73 UT: m1=13.4, Dia.=0.7’, DC=0/1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and diffuse, averted vision. Sky transparency average, difficult to see comet at times]
2013 May  11.05 UT: m1=12.9, Dia.=0.7′, DC=5; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Observación realizada en mejores condiciones, desde una ubicación más elevada de montaña, percibiendo un mayor diámetro de coma y una m1 más brillante, respecto a mi estimación previa de Mayo 4.11]
2013 May  10.75 UT: m1=12.9, Dia.=0.6’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma is very small and diffuse, visible using direct and averted vision. Coma does not enhance with Swan Band filter]
2013 May  04.11 UT: m1=13.3, Dia.=0.5′, DC=5; 20cm SCT (222x); Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña]
2013 Apr. 20.15 UT: m1=13.1, Dia.=0.4′, DC=5; 20cm SCT (206x); Juan José González (Puerto de Aralla, alt. 1530 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña]

C/2010 R1 (LINEAR)
2013 Apr. 30.83 UT: m1=17.1 CCD, Dia.=0.32′, Tail=0.7′ in PA 96 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Feb. 07.99 UT: m1=17.0 CCD, Dia.=0.30′, Tail=0.4′ in PA 98 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

C/2009 P1 (Garradd) / Curva de Luz SLC: Mag. Reduc. vs. Log R al 23 de junio de 2012
2013 Mar. 17.09 UT: m1=17.0 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 162-093818 mag.=16.52]
2013 Mar. 10.29 UT: m1=16.5, DC=3; Visual, 36″ f/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 04.82 UT: m1=15.2, Dia.=0.3’, DC=2; 50.8cm reflector (287x); Sandor Szabo (Sopron, Hunagry) [Small comet but easy to see with averted vision]
2013 Feb. 11.23 UT: m1=16.2 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 07.22 UT: m1=16.8 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 03.23 UT: m1=16.2 CCD; Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 02.23 UT: m1=16.5 CCD; Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 02.22 UT: m1=15.2 CCD, Dia.=0.6′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 19.21 UT: m1=15.7 CCD, Dia.=0.8′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 18.28 UT: m1=16.5 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Jan. 09.45 UT: m1=13.9 C CCD, Dia.=&2.0′, Tail=20′ in PA 32 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 09.28 UT: m1=15.4 CCD, Dia.=1.1′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

C/2009 F4 (McNaught)
2013 Nov. 30.72 UT: m1=14.8 CCD, Dia.=0.78′, Tail=5′ in PA 180 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Oct. 03.76 UT: m1=14.7 CCD, Dia.=0.91′, Tail=2.8′ in PA 186 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 02.79 UT: m1=14.7 CCD, Dia.=0.75′ Tail=2.6′ in PA 179 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 03.82 UT: m1=14.5 CCD, Dia.=1.00′, Tail=1.5′ in PA 177 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Feb. 03.07 UT: m1=14.7 CCD, Dia.=1.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 16.11 UT: m1=14.6 CCD, Dia.=1.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 06.14 UT: m1=14.7 CCD, Dia.=1.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 05.63 UT: m1=14.9 CCD, Dia.=0.7′; 11cm R + CCD; Artyom Novichonok (remotely from Siding Spring, Australia)
2013 Jan. 05.19 UT: m1=14.4 CCD, Dia.=1.0′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

C/2006 S3 (LONEOS)
2013 Aug. 28.36 UT: m1=14.4: CCD, Dia.=&0.5′, Tail=0.5′ in PA 114 deg; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia) [curved field of view, due to possible light pollution]
2013 July 24.37 UT: m1=13.7 CCD, Dia.=1.18′, Tail=1.6′ in PA 100 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 30.96 UT: m1=10.5, Dia.=5′, DC=1/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Jun. 11.94 UT: m1=13.3, Dia.=1.0′, DC=3; 50.8cm L (250x); Sandor Szabo (Hungary)
2013 Jun. 03.99 UT: m1=11.0, Dia.=4′, DC=2; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Jun. 01.14 UT: m1=[11.8 negativa; 15cm SCT (62x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 May  26.16 UT: m1=14.9 CCD, Dia.=0.3’, Tail= 0.3′; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  12.05 UT: m1=11.2, Dia.=1′, DC=3, no Tail; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2013 May  10.98 UT: m1=10.8, Dia.=5′, DC=2/; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 May  08.17 UT: m1=13.7 CCD, Dia.=0.6’, Tail= 0.7′ PA 119°; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  03.95 UT: m1=10.6, Dia.=5′, DC=2/; 20cm SCT (100x); Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [Débil coma exterior]
2013 May  02.14 UT: m1=12.8, DC=3; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  01.16 UT: m1=11.8, Dia.=2′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil) [moonlight]
2013 Apr. 28.94 UT: m1=10.7, Dia.=4′, DC=2/; 20cm SCT (100x); Juan José González (Ardoncino, alt. 875 m, León, España)
2013 Apr. 22.26 UT: m1=13.9 CCD, Dia.=0.4’, Tail= 0,4′ PA 96°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 22.15 UT: m1=13.4 CCD, Dia.=0.5’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.91 UT: m1=12.8, Dia.=1.8’, DC=4; 50.8cm reflector (189x); Sandor Szabo (Hungary)
2013 Apr. 07.75 UT: m1=13.6, Dia.=0.7′, DC=4; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Mar. 23.25 UT: m1=12.3, Dia.=1′, DC=5; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Mar. 10.39 UT: m1=14.2 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 19.43 UT: m1=14.0 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 02.31 UT: m1=13.3 CCD, Dia.=1.2; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 16.52 UT: m1=13.5 C CCD, Dia.=1.1′, Tail=1.2′ in PA:72 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 09.34 UT: m1=13.9 CCD, Dia.=0.6′; 30.5cm SCT; Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)

293P/Spacewatch
2013 Nov. 11.07 UT: m1=20.1: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [faint starlike comet; 2 frames were co-added for the photometry]

291P/NEAT
2013 Oct. 14.02 UT: m2=17.5 CCD, Tail=0.3′ in PA 238 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Aug. 14.99 UT: m1=17.6: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [poor quality images]

290P/Jäger
2013 Dec. 30.78 UT: m1=11.3, Dia.=1′, DC=4; 32cm L (96x); Uwe Pilz (Leipzig, Germany)
2013 Dec. 07.68 UT: m1=13.6, Dia.=0.8’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Close to mag 13.4 star, coma very diffuse, no tail visible, Alt = 17.5°]
2013 Dec. 05.68 UT: m1=13.6, Dia.=1’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and diffuse, no tail. Seeing difficult at times due to windy conditions, low alt: 17.5°]
2013 Dec. 04.98 UT: m1=12.7, Dia.=0.8′, DC=5; 20cm SCT (133x); Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [Estrellas de campo comprobadas en el DSS. Cometa próximo a estrella de mag. 14.2 (GSC). Estrellas de comparación de la fotometría PAASS cercana al cometa]
2013 Dec. 02.13 UT: m1=12.8, Dia.=0.7′, DC=2; 32cm L f:5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Dec. 01.13 UT: m1=12.8, Dia.=0.7′, DC=2; 32cm L f:5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Nov. 30.14 UT: m1=13.9, Dia.=0.4′, DC=4/; 40cm L (300x); Timo Karhula (Åkesta observatory, Västerås, Sweden) [Faint stellar nucleus]
2013 Nov. 27.87 UT: m1=14.0, Dia.=1.0′, DC=4; 50.8cm L (123x); Sandor Szabo (Sopron, Hungary) [Much brighter than 2.5 weeks Aug. With 307x: short tail is seen to the west]
2013 Nov. 08.01 UT: m1=14.7, Dia.=0.7′, DC=4; 50.8cm L (307x); Sandor Szabo (Sieggraben, Austria)
2013 Nov. 05.13 UT: m1=15.2 CCD, Dia.=0.4’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 28.90 UT: m1=14.3 CCD, Dia.=1.15′, Tail=2.0′ in PA 278 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T. Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 13.77 UT: m1=14.6, Dia.=0.4′, DC=5; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.77 UT: m1=[14.5; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, JPAan) [Near limit. Looks similar to a faint background stars]
2013 Oct. 11.73 UT: m1=[13.8; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan) [Near limit. Looks similar to a faint background stars]
2013 Oct. 04.03 UT: m1=15.6, Dia.=0.4′, DC=2; 50.8cm refl. (307x); Sandor Szabo (Sieggraben, Austria) [Motion was checked in 80 minutes period]
2013 Oct. 01.39 UT: m1=15.6 CCD, Dia.=0.35′, Tail<0.7′ in PA: 269 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Aug. 11.32 UT: m1=17.8, DC=4; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 11.30 UT: m1=17.8′, DC=7; 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Aug. 03.41 UT: m1=17.5 CCD; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T. Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)

285P/LINEAR
2013 Oct. 14.07 UT: m1=19.5: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [faint comet passage against NGC1977 nebula]

280P/Larsen
2013 Apr. 30.82 UT: m1=18.0 CCD, Dia.=0.28′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

278P/2013 B1 (McNaught)
2013 Apr. 30.84 UT: m1=18.6 CCD, Dia.=0.22′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

274P/Tombaugh-Tenagra
2013 Apr. 30.77 UT: m1=17.6 CCD, Dia.=0.29′, Tail=0.4′ in PA 123 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Apr. 29.13 UT: m1=17.6 CCD, Dia.=0.26′, Tail=0.4′ in PA 119 deg.; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Feb. 07.86 UT: m1=16.7 CCD, Dia.=0.4′, Tail<0.7′ in PA 155 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 15.95 UT: m1=16.6 CCD, Dia.=0.4′, Tail=0.6′ in PA 236 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

273P/2012 V4 (Pons-Gambart)
2013 Jun. 02.20 UT: m1=16.3 CCD, Dia.=0.6′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Jun. 01.26 UT: m1=16.1 CCD, Dia.=0.58′; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 May  28.10 UT: m1=17.6 CCD; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  27.15 UT: m1=17.4 CCD; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  11.92 UT: m1=[14.0, Dia.=!0.5; 30cm L f/5 (167x);  Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat.(AQ), comet alt. 57 deg. Faintest star 15.1 mag (AQ) near the comet in FOV. The comet was not seen]
2013 Apr. 30.18 UT: m1=14.1 CCD, Dia.=1.5′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 22.18 UT: m1=15.9 CCD; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.88 UT: m1=13.5, Dia.=1.8’, DC=1; 50.8cm reflector (189x); Sandor Szabo (Hungary)
2013 Apr. 07.76 UT: m1=13.6, Dia.=1.2′, DC=2; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Mar. 31.07 UT: m1=12.0, DC=2; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 20.11 UT: m1=13.0, Dia.=1.3’, DC=3; 50.8cm L (187x); Sandor Szabo (Hungary)
2013 Mar. 07.45 UT: m1=12.0, Dia.=1´, DC=8, Tail: Not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Mar. 06.03 UT: m1=12.3, Dia.=1′, DC=3; 25cm L (77x); Maciej Macidym (Chlebna, Poland) [Bad conditions, comet visible on bright background. NELM near comet was 5.5mag]
2013 Mar. 05.86 UT: m1=11.1 CAC; 500D + 200mm lens f/2.8; Man-To Hui (Canton, China)
2013 Mar. 05.08 UT: m1=12.8, Dia.=2′, DC=3/; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Mar. 05.01 UT: m1=11.3, Dia.=5.8′, DC=3; 35cm L (107x); Jakub Cerny (Rep. Checa)
2013 Feb. 24.33 UT: m1=11.0, Dia.=2′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Feb. 17.47 UT: m1=11.2, Dia.=2.0′, DC=3; 30.5cm L (115x); Todd Augustyniak (Woodstock, Illinois, USA)
2013 Feb. 15.80 UT: m1=10.8, Dia.=2.1′, DC=5; 40cm L f/4.5 (144x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Feb. 11.17 UT: m1=10.8, Dia.=2′, DC=1; 32cm L f/5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Feb. 09.19 UT: m1=9.6, Dia.=5′, DC=4, Tail: 0.1º en PA:300º; 20cm SCT (77x); Juan José González (Peña Nebina – Ferreruela de Tábara, alt. 940 m, Zamora, España)
2013 Feb. 08.167 UT: m1=9.7, Dia.=5-6′, DC=d2-3, Tail: 0.16 deg. in PA:60-65 deg.; 0.13m reflc. (26x, 54x); Gabor Santa (Nagy-Hideg-hegy, Hungary)
2013 Jan. 20.27 UT: m1=8.7, Dia.=6′, DC=4, Tail:0.3º en PA:310º; 20cm SCT (77x); Juan José González (Perilla de Castro, alt. 730 m, Zamora, España) [Comienzo del crepúsculo astronómico. Altura sobre el horizonte: 15º. Cielo muy claro de montaña]

272P/NEAT
2013 Feb. 07.90 UT: m1=17.6 CCD, Dia.=0.23′, Tail=0.2′ in PA 234 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

269P/Jedicke
2013 Oct. 14.06 UT: m1=17.5 CCD, Dia.=0.24′, Tail=0.2′ in PA 265 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

262P/McNaught-Russell
2013 Mar. 24.02 UT: m1=16.1 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 05.75 UT: m1=13.1, Dia.=1.1′, DC=2; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Mar. 04.78 UT: m1=14.6, Dia.=0.8’, DC=1; 50.8cm reflector (250x); Sandor Szabo (Sopron, Hunagry) [Large, diffuse comet but easily seen]
2013 Mar. 04.75 UT: m1=13.0, Dia.=1.2′, DC=2; 42cm L f:5 (81x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Feb. 10.77 UT: m1=11.5, Dia.=1′, DC=1; 32cm L f/5 (144x); Uwe Pilz (Leipzig, Germany)
2013 Jan. 27.98 UT: m1=15.9 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Jan. 13.82 UT: m1=10.5, Dia.=9′, DC=2; 20cm SCT (77x); Juan José Gonzalez (Alto de la Garandilla – Escuredo, alt. 1150 m, León, España) [Amplia coma, difusa, elongada y asimétrica]
2013 Jan. 11.76 UT: m1=11.6, Dia.=2.5′, DC=3; 50.8cm L (78x); Sandor Szabo (Hungary)
2013 Jan. 07.79 UT: m1=11.3, Dia.=4′, DC=2, no Tail; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2013 Jan. 06.44 UT: m1=11.4, Dia.=4.3’, DC=1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, inner coma slightly brighter but broad across coma centre, no tail. Method=S; Cat=AQ]
2013 Jan. 06.09 UT: m1=11.8 CCD (V), Dia.=3.2′; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 05.99 UT: m1=13.02 CCD, Dia.=1.0’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Jan. 04.99 UT: m1=11.5 (S), Dia.=2′, DC=2/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Jan. 04.45 UT: m1=11.2, Dia.=4.3’, DC=1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma large, diffuse edges with slight central brightening but broadly formed. Averted vision. Method= S; Cat= AQ]
2013 Jan. 03.83 UT: m1=10.8, Dia.=5′, DC=2; 20cm SCT (77x); Juan José González (Aralla, alt. 1440 m, León, España)
2013 Jan. 03.44 UT: m1=10.6, Dia.=4.5’, DC=1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slightly condensed at centre, no tail. Method= S; Cat= TK]
2013 Jan. 02.98 UT: m1=14.60 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)

260P/McNaught
2013 Feb. 07.84 UT: m1=16.9 CCD, Dia.=0.48′, Tail=0.8′ in PA 229 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 15.90 UT: m1=15.6 CCD, Dia.=0.7′, Tail=2.7′ in PA 221 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & TPAac Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 06.10 UT: m1= 17.17 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)

257P/Catalina
2013 Oct. 12.95 UT: m1=16.1 CCD, Dia.=0.5′, Tail=6.3′ in PA 262 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 08.68 UT: m1=16.2 CCD, Dia.=0.44′, Tail=4.4′ in PA 263 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 03.96 UT: m1=[15.8; 50.8cm refl. (307x); Sandor Szabo (Hungary) [NEGATIVE, fainter than 15.8 mag.]
2013 Sep. 06.96 UT: m1=[15.8, NEGATIVE; 50.8cm L (307x); Sandor Szabo (Hungary) [Comet is not seen, fainter than 15.8 mag]
2013 Aug. 11.26 UT: m1=17.3, DC=3; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 May  08.43 UT: m1=18.1 CCD, Dia.=0.16′, Tail=0.3′ in PA 264 deg.; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)

246P/NEAT
2013 Sep. 22.42 UT: m1=14.4 CCD, Dia.=0.9′, Tail=1′ in PA:279 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 26.49 UT: m1=13.4 CCD, Dia.=1.0′, Tail=1.2′ in PA 277 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62 (remotely Siding Spring, Australia))
2013 July 30.65 UT: m1=13.2 CCD, Dia.=1.17′, Tail=2.6′ in PA 276 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.66 UT: m1=13.2 CCD, Dia.=1.11′, Tail=3.8′ in PA 271 deg.; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 06.44 UT: m1=13.2, Dia.=0.6’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Outer coma diffuse and faint with small central condensation. Averted vision, no tail, observed from 1240m alt.]
2013 Jun. 16.20 UT: m1=11.8, Dia.=1.5’, DC=1, Tail: no visible; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina)
2013 May  19.74 UT: m1=14.1, Dia.=0.5’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, no tail, very small and diffuse, close to 13th mag star.]
2013 May  17.76 UT: m1=13.9, Dia.=0.5’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Very small coma, no tail, diffuse edges, bright diffused patch of light at centre, averted vision.]
2013 May  14.78 UT: m1=13.6, Dia.=0.7’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, coma appears very small and diffuse with slightly brighter core, very difficult due to scintillation effects, observed over a 40 minute period]
2013 Apr. 16.46 UT: m1=14.3 CCD, Dia.=0.7′, Tail=1.6′ in PA 267 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 12.45 UT: m1=[11.9; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Mar. 31.29 UT: m1=11.0, Dia.=1.5’, DC=1; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Mar. 23.33 UT: m1=12.2, Dia.=1.5′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Jan. 20.26 UT: m1=9.6, Dia.=3.5′, DC=3; 20cm SCT (77x); Juan José González (Perilla de Castro, alt. 730 m, Zamora, España) [Altura sobre el horizonte: 7º. Cielo muy claro de montaña]

244P/Scotti
2013 Apr. 30.79 UT: m1=18.2 CCD, Dia.=0.21′, Tail=1.1′ in PA 288 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Feb. 07.96 UT: m1=17.4 CCD, Dia.=0.2′, Tail=3.5′ in PA 290 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 11.06 UT: m1=17.5 CCD, Dia.=0.24′, Tail=0.9′ in PA 290 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

184P/Lovas
2013 Oct. 14.09 UT: m1=18.5 CCD, Dia.=0.25′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 12.06 UT: m1=18.6 CCD, Dia.=0.22′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

175P/Hergenrother
2013 July 05.38 UT: m1=16.4 CCD, Dia.=0.31′, Tail=0.3′ in PA 128 deg.; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 01.16 UT: m1=15.7 CCD, Dia.=0.52′ Tail=0.6′ in PA 102 deg.; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 Apr. 29.14 UT: m1=15.9 CCD, Dia.=0.46′; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Feb. 07.95 UT: m1=16.0 CCD, Dia.=0.79′, Tail=0.7′ in PA 284 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 11.03 UT: m1=16.9 CCD, Dia.=0.39′, Tail=0.7′ in PA 286 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

168P/Hergenrother
2013 Jan. 15.86 UT: m1=17.3 CCD, Dia.=0.3′, Tail=0.7′ in PA 82 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 10.82 UT: m1=16.9 CCD, Dia.=0.4′, Tail=0.8′ in PA 89 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Jan. 03.03 UT: m1=17.01 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)

154P/Brewington
2013 Dec. 30.73 UT: m1=8.9, Dia.=13′, DC=0; 32cm L (45x); Uwe Pilz (Leipzig, Germany)
2013 Dec. 27.75 UT: m1=11.0, Dia.=2.5′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Czech Republic)
2013 Dec. 07.98 UT: m1=10.4, Dia.=4′, DC=2; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [moonlight]
2013 Dec. 06.89 UT: m1=10.3, Dia.=4.5′, DC=2; 25×100 B; Jakub Cerny (España)
2013 Dec. 06.49 UT: m1=11.0, Dia.=3.1’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and almost even in brightness across coma, slightly brighter centre, does not enhance in Swan Band filter, Alt = 17.6°]
2013 Dec. 04.95 UT: m1=10.4, Dia.=3′, DC=3; 20cm SCT (100x); Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España)
2013 Dec. 04.90 UT: m1=10.6, Dia.=5.5′, DC=2; 25×100 B; Jakub Cerny (España)
2013 Dec. 02.78 UT: m1=10.9, Dia.=2.5′, DC=3; 42cm L f:5 (66x); Martin Lehky (Czech Republic)
2013 Dec. 02.46 UT: m1=10.4, DC=4; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 29.48 UT: m1=10.4, Dia.=4; 25.4cm L (71x); David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 27.83 UT: m1=10.1, Dia.=6′, DC=0; 20×80 B; Marek Biely (Brno, Czech Republic) [The best condition I ever observed. This is the most diffuse comet that I saw in my life. I didn´t expect that it will be observable in binocular. In the dark sky it is only light spot.]
2013 Nov. 27.81 UT: m1=10.8, Dia.=3.5′, DC=4; 50.8 cm L (123x); Sandor Szabo (Sopron, Hungary) [Coma is elliptical]
2013 Nov. 27.44 UT: m1=10.1, Dia.=5.4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very large, diffuse outer coma, gradually brightening to weakly condensed centre]
2013 Nov. 27.00 UT: m1=10.5, Dia.=4′, DC=2; 22cm L (60x); Marco Goiato (Araçatuba, Brasil) [little enhance with Swan filter]
2013 Nov. 24.84 UT: m1=9.6, Dia.=8′, DC=0; 12cm R (30x); Uwe Pilz (Leipzig, Germany)
2013 Nov. 24.43 UT: m1=10.3, Dia.=5.5’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Large and diffuse outer coma with small weakly condensed inner coma, faint stars at ENE edge of coma]
2013 Nov. 23.47 UT: m1=10.6:; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia)
2013 Nov. 23.46 UT: m1=10.7, Dia.=6, DC=1; 25.4cm (71x); David A. J. Seargent (Cowra, NSW, Australia) [Mildly enhanced using Swan Band filter]
2013 Nov. 23.44 UT: m1=10.3, Dia.=4.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very large and almost evenly diffuse across coma diameter with weakly  condensed centre, no tail. Enhances very slightly using Swan Band filter]
2013 Nov. 22.66 UT: m1=10.9, Dia.=1.8′, DC=3; 25.4cm L (46x, 120x); Danil Sidorko (Korenovsk, Russia)
2013 Nov. 21.00 UT: m1=10.5, Dia.=3′, DC=2; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2013 Nov. 07.85 UT: m1=11.4, Dia.=6′.1, DC=0, 25×100 B; Jakub Cerny (Sieggraben, Austria)
2013 Nov. 05.03 UT: m1=13.0 CCD, Dia.=0.8’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 04.96 UT: m1=10.8; DC=3; Visual SCT 14″; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 04.96 UT: m1=10.8, Dia.=1′, DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Nov. 01.51 UT: m1=11.9, Dia.=2′; 25.4 L (71x); David A. J. Seargent (Cowra, NSW, Australia)
2013 Oct. 31.842 TU: m1=11.1, Dia.=2′, DC=2; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Oct. 31.81 UT: m1=10.8, Dia.=2.8′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 31.77 UT: m1=11.2, Dia.=2.0′, DC=4; 50.8 cm refl. (123x); Sandor Szabo (CsPAod, Hungary)
2013 Oct. 30.85 UT: m1=11.0, Dia.=5.3′, DC=2/; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 30.81 UT: m1=10.8, Dia.=3′, DC=3/; 42cm L f:5 (66x); Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 30.78 UT: m1=7.7, Dia.=10′, DC=1; 7×50 B; Uwe Pilz (Leipzig, Germany) [Tail 0°5 in 12″ Dobson]
2013 Oct. 30.43 UT: m1=10.8, Dia.=6.7’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, faint outer coma, brightness even across inner coma with slightly brighter but weak centre. No tail. Bright star to ESE coma edge]
2013 Oct. 29.94 UT: m1=11.0:; 18cm L (72x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 29.00 UT: m1=10.8, Dia.=2′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Oct. 28.96 UT: m=11.0; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 27.95 UT: m1=10.9, Dia.=1′, DC=5; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 27.81 UT: m1=10.7, Dia.=2′, DC=3; 30cm L f/5 (60x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Catalogue (AQ) – Sidwick method. No Tail. 13.22mag star (B-V=1.22) inside the coma in the 30.4″ distance to the centre of central condensation]
2013 Oct. 27.42 UT: m1=10.6, Dia.=5.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, almost even surface brightness across coma, slightly brighter inner quarter, no tail]
2013 Oct. 27.07 UT: m1=10.4, Dia.=3’, DC=2; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina)
2013 Oct. 26.73 UT: m1=12.2, Dia.=2.5′, DC=1; 40.0 cm refl. (153x); Sandor Szabo (Sopron, Hungary)
2013 Oct. 26.14 UT: m1=12.0, Dia.=3′, DC=2; 25cm L (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 25.42 UT: m1=10.4, Dia.=6.3’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Background star at coma centre (mag 12.7) no tail, coma large and diffuse]
2013 Oct. 24.44 UT: m1=10.9, Dia.=5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Background star close to coma centre. Coma large, diffuse edges gradually brightening to a broad central condensation, no tail]
2013 Oct. 22.94 UT: m1=10.8, Dia.=1′; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 22.86 UT: m1=12.9 CCD + V filter, Dia.=0.53′, DC=3; 6.8cm R f/6 (14x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight. Catalogue UCAC4 – 2 comparison stars: V=12.26 and 12.81mag with color index B-V=0.56 and 0.63, respectively]
2013 Oct. 22.40 UT: m1=10.9, Dia.=6.2’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia]) [Coma very large and diffuse, even brightness across coma diameter with slightly brighter centre, weakly condensed. No tail, inner coma enhances using Swan Band filter.
2013 Oct. 20.96 UT: m1=10.9, Dia.=2′, DC=2/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Oct. 19.94 UT: m1=11.0; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight and clouds interference]
2013 Oct. 13.06 UT: m1=11.6, Dia.=2′, DC=2, no Tail; 20cm SCT(80x); Carlos Labordena (Castellón, España)
2013 Oct. 12.43 UT: m1=11.1, Dia.=1.5′, DC=0/; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 12.03 UT: m1=11.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [moonlight and clouds interference]
2013 Oct. 11.45 UT: m1=10.8, Dia.=2.7′, DC=0/; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 09.81 UT: m2=15.3 CCD, Dia.=&6′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Oct. 09.18 UT: m1=11.5, Dia.=2′, DC=4; 25cm Reflector (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 08.07 UT: m1=11.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 06.83 UT: m1=11.2:, Dia.=2′, DC=3; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Cometa próximo a una estrella de magnitud 9.5 ( Tycho-2 ), obstruyendo la estimación del diámetro de coma]
2013 Oct. 06.21 UT: m1=11.3, Dia.=2’, DC=1; 25cm SCT (62x); Alberto Anunziato (Oro Verde, Argentina) [no se observa Tail]
2013 Oct. 06.13 UT: m1=11.4, Dia.=2′, DC=2/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Oct. 06.02 UT: m1=13.5, DC=4; 91cm F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 05.08 UT: m1=[11.4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Oct. 04.875 UT: m1=12.3, Dia.=1,5′, DC=0; 40cm L (120x); Gabor Santa (Polaris Observatory, BudPAest, Hungary)
2013 Oct. 03.93 UT: m1=11.4, Dia.=2.5′, DC=2; 50.8cm refl. (189x); Sandor Szabo (Hungary)
2013 Oct. 03.92 UT: m1=11.9, Dia.=2.5′, DC=3; 32.6cm L (50x); Piotr Guzik (Krosno, Poland)
2013 Oct. 02.84 UT: m1=11.0, Dia.=7′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Oct. 01.99 UT: m1=10.7, Dia.=1.5′; 18cm L; A. Amorim (Florianopolis, Brazil)
2013 Oct. 01.85 UT: m1=12.2, Dia.=3.0′, DC=1/; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.12 UT: m1=[11.5 NEGATIVA; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 01.06 UT: m1=14.3′; DC=3; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 29.85 UT: m1=12.4, Dia.=2.5′, DC=2; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 29.09 UT: m1=12.0:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2013 Sep. 28.43 UT: m1=11.8, Dia.=4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, faint edges with loosely condensed central condensation. Inner coma enhances slightly using Swan Band filter. Windy conditions, limiting magnitude 6.5+, transparency PApears a lot clearer than previous observations]
2013 Sep. 26.85 UT: m1=12.4, Dia.=1,7′, DC=2; 32cm L (144x); Uwe Pilz (Leipzig, Germany)
2013 Sep. 26.45 UT: m1=12.4, Dia.=2.0′, DC=2; 30cm Dobson ; Con Stoitsis (Nagambie, Victoria, Australia) [Very large and diffused coma. Possible larger with averted vision. No enhancement noticed with Swan band filter. Conditions were very good]
2013 Sep. 25.51 UT: m1=12.2, Dia.=3’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre, no tail. Close to bright stars. Averted vision. Sky conditions better than previous observation although dust still present in the upper atmosphere]
2013 Sep. 24.47 UT: m1=12.7, Dia.=2.5’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma is very large and diffuse, averted vision used, no tail. Enhances very slightly using Swan Band filter. Sky conditions not ideal, very windy with considerable amount of suspended dust in upper atmosphere. Comet observed near meridian]
2013 Sep. 22.42 UT: m1=12.9: CCD, Dia.=&3′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T. Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 14.27 UT: m1=13.0, Dia.=1.4′, DC=3/; 45.7cm L f/4.2 (191x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Relatively easy to see; size visible with averted vision]
2013 Sep. 13.00 UT: m1=12.3, Dia.=1.7′, DC=3; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa. Cielo muy claro de montaña, buen seeing]
2013 Sep. 11.17 UT: m1=13.0:, Dia=1.5′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Sep. 09.04 UT: m2=18.3 CCD, Dia.=0.2’; CCD images unfiltered; Stéphane Potvin (Cd’OA Monts Notre-Dame, Québec, Canada)
2013 Sep. 06.94 UT: m1=14.9, Dia.=0.6′, DC=3; 50.8cm L (307x); Sandor Szabo (Hungary)
2013 Sep. 04.05 UT: m1=13.6, Dia.=1′; DC=3; 33cm L (50x); Piotr Guzik (Krosno, Poland)
2013 Aug. 24.20 UT: m2=16.4 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada)
2013 Aug. 15.28 UT: m1= 13.9 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 11.26 UT: m1= 16.8, DC=4; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 11.15 UT: m1= 16.8 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 07.31 UT: m1=17.2 CCD, Dia.=0.1’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Aug. 07.16 UT: m1=16.6 CCD, Dia.=0.3’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  07.26 UT: m1=17.2, DC=4; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)

134P/Kowal-Vavrova
2013 Apr. 30.76 UT: m1=18.8 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

125P/Spacewatch
2013 Aug. 11.86 UT: m1=16.9 CCD, Dia.=0.4′, Tail=1.7′ in PA 255 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 May  08.42 UT: m1=16.9 CCD, Dia.=0.27′, Tail=1.1′ in PA 255 deg.; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 15.46 UT: m1=16.9 CCD, Dia.=0.19′, Tail=0.8′ in PA 259 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)

119P/Parker-Hartley
2013 Oct. 13.96 UT: m1=16.9 CCD, Dia.=0.29′, Tail=0.9′ in PA 243 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

117P/Helin-Roman-Alu
2013 Sep. 21.39 UT: m1=14.9 CCD, Dia.=0.59′, Tail=0.9′ in PA:315 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Sep. 03.41 UT: m1=14.7 CCD, Dia.=0.65′, Tail=0.8′ in PA:302 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 July 29.38 UT: m1=14.7: CCD, Dia.=&0.6′, Tail=1.6′ in PA 310 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.45 UT: m1=14.3, Dia.=0.6’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, difficult due to scintillation effects, averted vision]
2013 July 02.44 UT: m1=14.2, Dia.=0.5’, DC=2; 25cm L f:5 (167x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, coma diffuse with small diffuse central condensation during periods of good seeing.]
2013 Jun. 29.19 UT: m1=14.6 CCD, Dia.=0.5′, Tail=0.3′ in PA 316 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 Jun. 03.39 UT: m1=14.0, Dia.=0.7’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with slightly brighter central condensation, averted vision, observed over a period of 25 minutes]
2013 Jun. 01.26 UT: m1=14.5 CCD, Dia.=0.63′, Tail=1.2′ in PA 303 deg.; 0.11-m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 May  27.18 UT: m1=14.6 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  15.21 UT: m1=14.5 CCD, Dia.=0.2’, Tail= 2,6′ PA 304°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  02.14 UT: m1=14.8, DC=3; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 30.25 UT: m1=14.4 CCD, Dia.=0.52′, Tail=1.7′ in PA 293 deg.; 0.51-m f/4.5 reflector + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Apr. 22.27 UT: m1=16.3 CCD, Dia.=0.3’, Tail= 0,9′ PA 304°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.94 UT: m1=15.3, Dia.=0.2’, DC=7; 50.8cm reflector (250x); Sandor Szabo (Hungary) [Very small and compact comet, motion was checked in 60 min. period]
2013 Apr. 07.18 UT: m1=15.3, DC=4; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)

102P/Shoemaker
2013 Nov. 05.04 UT: m1=17.4 CCD, Dia.=0.3’; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 09.20 UT: m1=[12.0, negativa; 25cm Reflector (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 08.67 UT: m1=17.5 CCD, Dia.=0.31′, Tail=0.3′ in PA 127 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 Sep. 30.11 UT: m1=17.2′, DC=4; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 08.01 UT: m1=15.2 CCD + V filter, Dia.=0.48′, DC=4; 15cm L f/4 (10x30s); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Software: IRIS. Comparison star UCAC4-560-000799 15.383+/-0.04mag with B-V=0.651. Takeing the same star from UCAC3 (15.82mag) m1=15.7!]
2013 Sep. 06.21 UT: m1=17.9 CCD, Dia.=0.4’; CCD images unfiltered; Pierre LPAorte (Cd’OA Monts Notre-Dame, Québec, Canada)
2013 Aug. 11.26 UT: m1=15.9 CCD, Dia.=0.5’; CCD images unfiltered; Pierre LPAorte (Cd’OA, Monts Notre-Dame, Québec, Canada)
2013 Aug. 09.94 UT: m1=16.8 CCD, Dia.=0.6′, Tail=0.8′ in PA 236 deg; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 July 31.77 UT: m1=17.5 CCD, Dia.=0.27′, Tail=0.2′ in PA 222 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)

98P/Takamizawa
2013 Jun. 30.82 UT: m1=15.4 CCD, Dia.=0.7′; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
2013 July 28.52 UT: m1=14.8: CCD, Dia.=&0.7′; 0.43-m f/6.8 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)

84P/Giclas
2013 Nov. 08.04 UT: m1=[15.8, NEGATIVE; 50.8cm L (307x); Sandor Szabo (Sieggraben, Austria) [Fainter than 15.8 mag]
2013 Oct. 01.74 UT: m1=16.8 CCD, Dia.=0.21′, Tail=0.2′ in PA: 267 deg.; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 20.02 UT: m1=17.4 CCD, Dia.=0.20′, Tail=0.3′ in PA 259 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

78P/Gehrels 2
2013 Mar. 18.02 UT: m1=17.2 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 17.19 UT: m1=17.4 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 15.22 UT: m1=17.5 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 10.26 UT: m1=18.0 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 19.27 UT: m1=17.6 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 11.29 UT: m1=17.5 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 10.34 UT: m1=17.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Jan. 11.11 UT: m1=16.8 CCD, Dia.=0.31′, Tail=0.2′ in PA 62 deg.; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

74P/Smirnova-Chernykh
2013 Oct. 12.89 UT: m1=18.7: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [faint comet, so 3 frames were co-added for the photometry]

63P/Wild 1
2013 Aug. 03.39 UT: m1=13.1: CCD, Dia.=&2.5′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 29.37 UT: m1=12.6: CCD, Dia.=&3.8′; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.37 UT: m1=14.6 CCD, Dia.=1.36′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 Jun. 06.15 UT: m1=[11.5, [negativo]; 15cm SCT (187x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Jun. 03.93 UT: m1=10.3, Dia.=6′, DC=1/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Después del outburst ocurrido a mediados de Mayo, el cometa muestra en la actualidad visualmente una coma amplia y difusa, con débil región externa. Cielo muy claro de montaña.]
2013 May  28.08 UT: m1=15.1 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  17.45 UT: m1=12.6, Dia.=1.7’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Averted vision, Moonlight, does not enhance using Swan Band filter, transparency average and seeing average to poor. Comet was easily visible at 156x.]
2013 May  11.89 UT: m1=11.9, Dia.=1.7′, DC=4; 30cm L f/5 (60x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat.(AQ), comet alt. 25 deg]
2013 May  07.09 UT: m1=14.5 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  05.07 UT: m1=15.5 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Sallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  03.88 UT: m1=11.8, Dia.=1.5′, DC=0; 32cm L f/5 (72x); Uwe Pilz (Leipzig, Germany)
2013 May  02.07 UT: m1=14.5, DC=4; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 May  01.96 UT: m1=12.2, Dia=1.5′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Apr. 22.12 UT: m1=15.4 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 18.09 UT: m1=14.7 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.87 UT: m1=13.2, Dia.=1.1’, DC=5; 50.8cm reflector (189x); Sandor Szabo (Hungary) [Very close to some bright star, hard to estimate]
2013 Apr. 12.15 UT: m1=[12.0; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Apr. 11.04 UT: m1=11.5, Dia.=1.5′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Apr. 07.15 UT: m1=12.5, Dia.=1.5′, DC=3, no Tail; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2013 Mar. 31.11 UT: m1=14.6 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 30.94 UT: m1=11.0, Dia.=3′, DC=2/; 20cm SCT (77x); Juan José González (Granja de Moreruela, alt. 705 m, Zamora, España) [Diffuse coma with faint outer region]
2013 Mar. 30.12 UT: m1=13.2 CCD, Dia.=0.8’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 17.16 UT: m1=14.5 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 16.21 UT: m1=13.5 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada) [This unusual value has been evaluated three time with similar values; error in picture or slight outburst??. Comparison star 3UCAC 236-101688 mag.=14.45]
2013 Mar. 15.04 UT: m1=14.5 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 14.23 UT: m1=14.3 CCD, Dia.=0.5’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 10.31 UT: m1=13.7, DC=4; Visual, 36″ f/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Mar. 06.00 UT: m1=12.3, Dia.=1′, DC=7; 25cm L (77x); Maciej Macidym (Chlebna, Poland) [Visible only center condensation, not visible outer coma. NELM=6.3mag]
2013 Mar. 04.98 UT: m1=11.8, Dia.=2.5′, DC=2/3; 25cm L(77x); Maciej Macidym (Chlebna, Poland) [Visible outer coma and small, fuzzy center condensation. NELM = 6.8mag]
2013 Mar. 04.87 UT: m1=13.7, Dia.=1.0’, DC=5; 50.8cm reflector (250x); Sandor Szabo (Sopron, Hunagry)
2013 Mar. 01.85 UT: m1=11.2, Dia.=3.5′, DC=2/; 20cm SCT (77x); Juan José González (Piedrafita de Babia, alt. 1240 m, León, España) [Más brillante que lo previsto. Coma difusa con débil región externa. Cielo muy claro de montaña]
2013 Feb. 28.80 UT: m1=13.9, Dia.=0.4′, DC=4; 40cm reflector (250x); Sandor Szabo (Sopron, Hunagry)
2013 Feb. 17.44 UT: m1=13.6, Dia.=0.8′, DC=5; 30.5cm L (188x); Todd Augustyniak (Woodstock, Illinois, USA)
2013 Jan. 11.88 UT: m1=15.7, Dia.=0.2′, DC=8; 50.8cm L (307x); Sandor Szabo (Hungary) [Seen only with averted vision, but my friend Zoltan Toth has also confirmed the view. Nearly starlike, motion could not be checked because the comet is on stationary position. Limiting magnitude in field is 16.8. Checked only in DSS.]

52P/Harrington-Abell
2013 Oct. 28.88 UT: m1=17.0 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

32P/Comas Sola
2013 Oct. 28.82 UT: m1=17.3 CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

29P/Schwassmann-Wachmann 1
2013 Aug. 28.37 UT: m1=13.0: CCD, Dia.=&3.9′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 July 28.33 UT: m1=[15.0, Dia.=–, DC=–; 41cm f4.5 Reflect (64-170x); John Drummond (Gisborne, New Zealand) [Comet Schwassmann-Wachmann 1 not visible visually. Can visually see stars to mag 15.9. Comet 50 degrees altitude in the West. Clear, dark rural sky. No Moon]
2013 July 24.37 UT: m1=12.2: CCD, Dia.=&4.9′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 06.42 UT: m1=12.4, Dia.=1.6’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Close to mag 13.5 star, difficult observation, averted vision, no tail. Observed from 1240m alt.]
2013 July 03.43 UT: m1=12.5, Dia.=2.4’, DC=1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma shows a very even brightness across coma and diffused, averted visio]
2013 July 03.40 UT: m1=12.2, Dia.=1.5′, DC=2/; 30cm Dobson; Con Stoitsis (Nagambie, Victoria, Australia) [Coma very diffused. No tail observed]
2013 July 02.43 UT: m1=12.6, Dia.=1.5’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with even surface brightness from outer coma toward centre, slightly brightening to centre, no definite central condensation visible. Sky transparency average, limiting magnitude 6.2.]
2013 Jun. 30.94 UT: m1=10.4, Dia.=3.5′, DC=2; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En evolución después del reciente outburst. Coma exterior amplia y difusa, remanente de eventos previos. Cielo claro de montaña]
2013 Jun. 18.45 UT: m1=12.5, Dia.=0.7’, DC=2; 25cm L f:5 (167); Chris Wyatt (Walcha, NSW, Australia) [Coma PApears circular and very diffuse, averted vision, moonlight, slight interference by smoke from town fires]
2013 Jun. 15.55 UT: m1=12.2, Dia.=3.5′, DC=3/; 30cm Dobson; Con Stoitsis (Clonbinane, Victoria, Australia) [The coma has a stellar appearance at the centre. It is was noticeably more diffused towards the edges, and may be considerably larger than I’ve estimated here]
2013 Jun. 15.08 UT: m1=12.2, Dia.=0.5′, DC=7/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Jun. 14.99 UT: m1=11.5, Dia.=2.2′, DC=s1/; 20cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En outburst. Condensación central casi estelar con m2=12.6 (PAASS). Coma interna más brillante (diámetro: 0.4′ ) rodeada de una débil región externa, probablemente más amplia que los 2.2′ indicados, pero muy difícil de observar, remanente de eventos previos. Cielo muy claro de montaña]
2013 Jun. 06.15 UT: m1=12.0, Dia.=1′, DC=8, Tail: Not visible; 15cm SCT (187x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Jun. 03.95 UT: m1=12.8, Dia.=0.6′, DC=6; 20cm SCT (206x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En evolución después del reciente outburst menor. Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría PAASS cercana al cometa]
2013 May  02.15 UT: m1=15.0, DC=2; Visual PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Apr. 13.95 UT: m1=[15.0, negative; not seen; Sandor Szabo (Hungary) [must be fainter than 15.0 mag, 50.8 cm reflector (250x)]
2013 Mar. 23.29 UT: m1=12.5, Dia.=2′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2013 Feb. 19.39 UT: m1=16.5 CCD, Dia.=0.3’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Feb. 02.43 UT: m1=16.9 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Jan. 20.22 UT: m1=10.5, Dia.=7′, DC=1/; 20cm SCT (77x); Juan José González (Perilla de Castro, alt. 730 m, Zamora, España) [Coma muy difusa. Estrellas de campo comprobadas en el DSS. Varias estrellas en la coma, teniendo la más brillante mag. 12.5 (PAASS)]
2013 Jan. 08.24 UT: m1=11.0, Dia.=7′, DC=1/; 20cm SCT (77x); (Alto del Castro – Aralla, alt. 1720 m, León, España) [Coma muy difusa con débil región externa, que parece ser el remanente de un outburst previo. Estrellas de campo comprobadas en el DSS. Observación realizada desde una más elevada ubicación de montaña, percibiendo un mayor diámetro de coma y más brillante m1 en comparación con mi observación previa de Dec. 23.26]

26P/ Grigg-Skjellerup
2013 Sep. 06.81 UT: m1=[15.0, NEGATIVE; 50.8cm L (307x); Sandor Szabo (Hungary) [Comet is not seen, fainter than 15.0 mag]
2013 Aug. 27.38 UT: m1=14.9 CCD, Dia.=1.2′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia)
2013 Aug. 11.12 UT: m1=13.5, Dia.=1.8′, DC=2; 30.5cm L (115x); Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA) [Comet 18 degrees altitude; faint, diffuse; only visible with averted vision]
2013 Aug. 04.13 UT: m1=[13.5; 40.6cm L (141x); Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Comet not visible visually; positioned 13.5 degrees above horizon]
2013 Aug. 03.38 UT: m1=14.4: CCD, Dia.=&1.4′; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 24.36 UT: m1=13.2: CCD, Dia.=&2.5′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 08.42 UT: m1=13.3, Dia.=0.9’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, averted vision, no tail, low alt (17°), zodiacal light interference]
2013 July 08.36 UT: m1=12.4: CCD, Dia.=&3.3′; 0.11m f/5.0 refractor + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 06.41 UT: m1=13.5, Dia.=0.9’, DC=1/2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, no tail, averted vision, altitude 20°. Windy conditions, zodiacal light interference, observed from 1240m alt.]
2013 July 03.37 UT: m1=13.9, Dia.=0.4’, DC=0/1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very small and difficult to observe due to interference from Zodiacal light, observed over 25 minute period, motion checked, averted vision in good seeing. Also used magnification of x167 which showed the coma only fleetingly, x83 seemed to show the coma better in periods of good seeing]

17P/Holmes
2013 Sep. 21.40 UT: m2=15.3 CCD, Dia.=&1.8′; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, Q62. Remotely Siding Spring, Australia))
2013 Aug. 03.40 UT: m2=15.6 CCD, Dia.=&0.7′; 0.32-m f/7.4 Ritchey-Chretien + CCD; A. Novichonok & T. Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)
2013 July 05.41 UT: m1=14.5: CCD, Dia.=0.56′; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia) [Observations may contain uncertainty due to a star close to comet’s nucleus]

4P/Faye
2013 Oct. 06.01 UT: m1=16.3, DC=4; 91cm F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 30.00 UT: m1=16.3′, DC=3; Visual, PAerture 36″ F/3.5; Jean-François Viens (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Aug. 02.85 UT: m1=17.1: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)

2P/Encke
2013 Nov 19.54 UT: m1=[6.9; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov 19.49 UT: m1=[7.8; 20.3cm reflector; Todd Augustyniak (Bartlett, Illinois USA)
2013 Nov. 18.49 UT: m1=7.8, Dia.=1.5′, DC=8; 20.3cm L f/5.9 (92x); Todd Augustyniak (Bartlett, Illinois, USA)
2013 Nov. 16.84 UT: m1=8.2, Dia.=-, DC=8; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 14.52 UT: m1=7.7, Dia.=2′, DC=8; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 14.24 UT: m1=8.0, Dia.=2′, DC=8/; 25×100 B; Juan José González (Cueto Rosales – Riello, alt. 1420 m, León, España) [PAariencia casi estelar. El menor diámetro de coma observado proporciona una estimación de la magnitud más débil que la obtenida en la sesión previa ( Nov. 11.24 UT: m1=7.5; Dia.=3′, DC=7/). Tail no observable. Interferencia de la luz zodiacal. Baja altura sobre el horizonte: 7º. Crepúsculo astronómico. Cielo muy claro de montaña]
2013 Nov. 12.17 UT: m1=6.9, Dia.=7.5′, DC=8, Tail=0.05 deg. in PA: 310 deg.; 20×80 B; Marek Biely (Brno, Czech Republic) [I was surprised. It is very strongly condensed. Very easy to see, although it locates very low. Very short straight ion tail is visible, too. Astronomical twilight.]
2013 Nov. 11.24 UT: m1=7.5, Dia.=3′, DC=7/, Tail: 0.3º en PA 300º; 25×100 B; Juan José González (Sierra de Nuestra Señora – Castrocontrigo, alt. 1140 m, León, España) [Coma exterior no perceptible, mayor grado de condensación. El menor diámetro de coma observado proporciona una estimación de la magnitud más débil que la obtenida en la sesión previa (Nov. 6.24 UT, 10x50B: m1=6.9; Dia.=10′, DC=5/). Interferencia de la luz zodiacal. Altura sobre el horizonte: 11º. Crepúsculo astronómico. Cielo muy claro de montaña]
2013 Nov. 10.51 UT: m1=7.7, Dia.=10′, DC=4; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.83 UT: m1=7.5, Dia.=&4′, DC=8; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Ibaraki, JPAan)
2013 Nov. 08.54 UT: m1=7.0, Dia.=8´, DC=5/; 15cm SCT (36x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: Not visible]
2013 Nov. 08.52 UT: m1=7.3, Dia.=5′, DC=8; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 08.215 TU: m1=7.1, Dia.=6′, DC=6; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 08.18 UT: m1=6.6, Dia.=3′, DC=7/; 10×50 B; Timo Karhula (Åkesta Observatory, Västerås, Sweden)
2013 Nov. 08.15 UT: m1=7.5, Dia.=3.5′, DC=6; 8×56 B; Sandor Szabo (Sieggraben, Austria) [with 50.8L, 189x: tail is 5’ long to PA:310 deg.]
2013 Nov. 07.51 UT: m1=6.7, Dia.=10′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 07.21 UT: m1=7.4, Dia.=8′, DC=2; 20×60 B; José J. Chambó (Vallés, Valencia, España) [City lights, Low altitude: 10º]
2013 Nov. 06.24 UT: m1=6.9, Dia.=10′, DC=5/, Tail: 0.5º en PA 300º; 10×50 B; Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1220 m, Asturias, España) [Interferencia de la luz zodiacal. Altura sobre el horizonte: 15º. Comienzo del crepúsculo astronómico]
2013 Nov. 06.213 TU: m1=7.3, Dia.=6′, DC=5; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 04.52 UT: m1=9.4 CCD, Dia.=0.9’; Tail=3′ PA: 307°; CCD images unfiltered; Pierre LPAorte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 04.50 UT: m1=7.3, Dia.=8′, DC=7; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 03.41 UT: m1=9.0 CCD, Dia.=1.2’; Tail=5′ PA: 305°; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Nov. 03.208 TU: m1=7.5, Dia.=6′, DC=5; 11×80 B; Carlos Labordena (Castellón, España)
2013 Nov. 03.205 TU: m1=7.8, Dia.=7′, DC=6; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Nov. 01.49 UT: m1=7.8, Dia.=9′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Nov. 01.16 UT: m1=7.2 CCD + V filter, Dia.=4.2′, DC=6; 6.8cm R f/4 (5x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland)[Twilight, comet alt. 21.3 deg.; Cat.(AQ)- 7 comparison stars: V=(10.0-11.4) with color index B-V=(0.56-0.69)]
2013 Nov. 01.13 UT: m1=7.4, Dia.=8′, DC=7; 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland) [Easily visible. In 32.6 cm reflector at 50x bright, disklike central condensation ~2′ in diameter surrounded but a fainter and much larger halo]
2013 Nov. 01.11 UT: m1=7.4, Dia.=6.5′, DC=4; 20×80 B; Marek Biely (Brno; Czech Republic) [Easy to see, but it locates fairly low.]
2013 Oct. 31.22 UT: m1=7.4, Dia.=10′, DC=5; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Ligera interferencia lunar. No era perceptible la parte más débil de la coma externa. Altura sobre el horizonte: 19º]
2013 Oct. 31.21 UT: m1=8.4, Dia.=4.5′, DC=d6; 32cm L f/5 (48x); Uwe Pilz (Leipzig, Germany) [Tail=10′ in PA=281 deg.)
2013 Oct. 31.17 UT: m1=8.1, Dia.=8′, DC=2/; 25×100 B; Martin Lehky (Hradec Kralove, Czech Republic)
2013 Oct. 31.17 UT: m1=8.0, Dia.=5′, DC=4; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [some cirrus, altitude only 15 degrees]
2013 Oct. 31.14 UT: m1=7.7, Dia.=6′, DC=7, 10×50 B; Piotr Guzik (Przełęcz Szklarska, Poland)
2013 Oct. 30.53 UT: m1=7.8, Dia.=7′, DC=2; 10×50 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 29.20 UT: m1=8.3, Dia.=4′, DC=7; 40.7cm L (58x); NiTails Biver (Ablis, France) [bright inner core of 1′]
2013 Oct. 29.20 UT: m1=8.3, Dia.=4′; 7×50 B; NiTails Biver (Ablis, France)
2013 Oct. 29.13 UT: m1=7.8, Dia.=4′, DC=5; 15×80 B; Sandor Szabo (Boly, Hungary)
2013 Oct. 28.208 TU: m1=8.5, Dia.=7′, DC=4; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2013 Oct. 27.50 UT: m1=8.7; 10×50 B; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 27.18 UT: m1=8.0, Dia.=7′, DC=3; 15×80 B; Alex Scholten (Eerbeek, Netherlands) [possible underestimated due to moonlight, Last Quarter]
2013 Oct. 26.48 UT: m1=8.5, Dia.=6′, DC=4/; 25cm L (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail visible]
2013 Oct. 23.38 UT: m1=10.7 CCD, Dia.=–; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 23.16 UT: m1=7.5 CCD + V filter, Dia.=2.2′, DC=3; 6.8cm R f/6 (12x30s); Mieczyslaw Leszek Paradowski (Lublin, Poland)[Twilight and Moonlight. Catalogue [HV] – 2 comparison stars: V=8.81 and 8.47 with color index B-V=0.637 and 0.516, respectively]
2013 Oct. 23.12 UT: m1=8.0:, Dia.=7′, DC=4, 10×50 B; Piotr Guzik (Biórków Mały, Poland) [Relatively easy to see despite bright moonlight. Excellent transparency]
2013 Oct. 23.12 UT: m1=8.2, Dia.=6′, DC=4, 32.6cm L (50x); Piotr Guzik (Biórków Mały, Poland) [Bright, moderately condensed with central condensation off-center]
2013 Oct. 22.21 UT: m1=8.6, Dia.=5′, DC=4; 40.7cm L (58x); NiTails Biver (Versailles, France)
2013 Oct. 21.39 UT: m1=10.4 CCD, Dia.=0.6’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 20.12 UT: m1=8.0:, Dia.=&6′, DC=3, 10×50 B; Piotr Guzik (Krosno, Poland)
2013 Oct. 20.12 UT: m1=8.4, Dia.=6′, DC=3/, 20.3cm L (63x); Piotr Guzik (Krosno, Poland) [Easily visible despite very bright moonlight]
2013 Oct. 19.17 UT: m1=8.7, Dia.=4′, DC=2/; 20×80 B; Marek Biely (Brno, Czech Republic)
2013 Oct. 18.18 UT: m1=9.2 CCD, Dia.=6′, DC5; Digital Reflex + 0.3m lens; Giuseppe PPApa (Sicily, Italy)
2013 Oct. 16.51 UT: m1=8.3, Dia.=7′, DC=3; 30×125 B; Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 16.18 UT: m1=7.9, Dia.=13′, DC=2/; 10×50 B; Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España)
2013 Oct. 16.18 UT: m1=8.3; 20cm SCT (77x); Juan José González (Cubillos – Sierra del Aramo, alt. 1510 m, Asturias, España) [Coma asimétrica]
2013 Oct. 13.75 UT: m1=8.4, Dia.=8′, DC=2; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan) [Very bright and large!]
2013 Oct. 13.11 UT: m1=10.3, Dia.=6′, DC=3, no Tail; 20cm SCT(50x); Carlos Labordena (Castellón, España)
2013 Oct. 12.75 UT: m1=8.5, Dia.=7.5′, DC=2/; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.74 UT: m1=8.3, Dia.=7′, DC=2; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, JPAan)
2013 Oct. 11.49 UT: m1=9.1, Dia.=4′, DC=2; 30×125 B, Carl Hergenrother (Tucson, Arizona, USA)
2013 Oct. 09.45 UT: m1=10.5, Dia.=5′, DC=3; 25cm Reflector (60x); Salvador Aguirre (Hermosillo, Sonora, Mexico) [Tail: visible]
2013 Oct. 09.36 UT: m1=12.4 CCD, Dia.=0.8′; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 07.15 UT: m1=9.3, Dia.=10′, DC=2; 25×100 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20cm SCT (77x): m1=9.7. Coma asimétrica]
2013 Oct. 05.48 UT: m1=10.6; 41cm reflector; Alan Hale (Cloudcroft, New Mexico, USA)
2013 Oct. 05.145 UT m1=11.0, Dia.=2,5-3′, DC=1; 40cm L (120x); Gabor Santa (Polaris Observatory, BudPAest, Hungary) [NELM=about 5, suburban sky]
2013 Oct. 04.74 UT: m1=10.5, Dia.=3.7’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Very diffuse, no tail, altitude 7°, averted vision]
2013 Oct. 04.09 UT: m1=10.5, Dia.=8.1′, DC=2/; 35cm L (64x); Jakub Cerny (Senohraby, Czech Republic)2013 Oct. 03.11 UT: m1=10.6, Dia.=3.6′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2013 Oct. 04.05 UT: m1=10.0:, Dia.=&6′, DC=2, 10×50 B; Piotr Guzik (Krosno, Poland)
2013 Oct. 04.05 UT: m1=10.4, Dia.=5′, DC=2, 32.6cm L (50x); Piotr Guzik (Dosłońce, Poland) [Much brighter than four weeks Aug. Relatively bright but diffuse object. Easily visible under excellent conditions]
2013 Oct. 04.05 UT: m1=10.8, Dia.=3.5′, DC=4; 50.8cm refl. (123x); Sandor Szabo (Hungary) [Broad tail is seen 5’ long to PA 100deg.]
2013 Oct. 03.74 UT: m1=10.8, Dia.=4’, DC=1/2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, no tail, altitude 8°, averted vision]
2013 Oct. 03.13 UT: m1=9.6, Dia.=~9′, DC=1, 20cm L (42x); Alex Scholten (Netherlands) [very diffuse comet, altitude 60 degrees]
2013 Oct. 02.07 UT: m1=11.3, Dia.=5.7′, DC=2; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.43 UT: m1=[11.5 NEGATIVA; 15cm SCT (75x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Oct. 01.11 UT: m1=9.8, Dia.=~6’, DC=1, 20cm L (42x); Alex Scholten (Netherlands) [very diffuse comet; only with averted vision, altitude 60 degrees]
2013 Sep. 30.36 UT: m1=16.6 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 29.95 UT: m1=11.3, Dia.=6.3′, DC=2; 35cm L (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 29.37 UT: m1=17.4 CCD, Dia.=0.2’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 27.37 UT: m1=16.9 CCD, Dia.=0.4’; CCD images unfiltered; Clermont Vallière (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Sep. 26.88 UT: m1=11.6, Dia.=1,2′, DC=1; 32cm L (144x); Uwe Pilz (Leipzig, Germany) [low-18°]
2013 Sep. 14.37 UT: m1=12.4, Dia.=3.1′, DC=1; 45.7cm L f/4.2 (112x); Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Large, diffuse; difficult to gauge where coma ends]
2013 Sep. 13.02 UT: m1=11.0, Dia.=5′, DC=1; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Desde cielos oscuros de montaña la coma se percibe amplia y difusa, con débil región externa]
2013 Sep. 07.06 UT: m1=14.7, Dia.=0.8′, DC=1; 50.8cm L (250x); Sandor Szabo (Hungary) [Motion was checked during 20 minutes period]
2013 Sep. 07.04 UT: m1=12.2, Dia.=3.8′, DC=1; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 04.05 UT: m1=14.0:, Dia.=&1.5′, DC=0/; 33cm L (50x); Piotr Guzik (Krosno, Poland)
2013 Sep. 01.37 UT: m2=17.2 CCD, Dia.=&5′; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Aug. 11.01 UT: m1=18.4: CCD; 0.40-m f/8 Ritchey-Chretien + CCD; V.Gerke & T.Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia) [poor quality images]
2013 Aug. 08.39 UT: m1=18.2 CCD; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2013 Aug. 02.39 UT: m1=18.4 CCD; 0.43-m f/4.5 astrogrPAh + CCD; A. Novichonok & T. Prystavski (iTelescope observatory H06. Remotely Mayhill, U.S.A.)
2013 July 20.81 UT: m1=18.6 CCD; 0.51-m f/4.5 astrogrPAh + CCD; A. Novichonok & T.Prystavski (iTelescope observatory Q62. Remotely Siding Spring, Australia)

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