Observaciones 2012

Año 2012 – Observaciones Visuales y CCD de Cometas
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C/2012 T5 (Bressi)
2012 Dec. 09.75 UT: m1=15.2, Dia.=0.4′, DC=2; 50.8cm (307x); Sandor Szabo (Sopron, Hungary) [Faint but easily seen with averted vision. Motion is checked during a 15 min. period]
2012 Nov. 13.18 UT: m1=17.4 ccd, Dia.=0.4′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 11.11 UT: m1=16.3, DC=4; Visual Aperture 91cm F:3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

C/2012 S1 (ISON)
2012 Dec. 31.28 UT: m1=16.0 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [ comparison star 3UCAC 242-092452 mag.=16.00]
2012 Dec. 25.30 UT: m1=16.1 ccd, Dia.=0.2’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 16.32 UT: m1=16.8 ccd, Dia.=0.2’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 15.16 UT: m1=16.7 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 20.42 UT: m1=17.7 ccd, Dia.=0.2’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 20.28 UT: m1=17.0 ccd, Dia.=0.3′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 18.22 UT: m1=16.5, DC=6; Visual Aperture 91cm F:3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 17.45 UT: m1=17.2 ccd, Dia.=0.2’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 17.20 UT: m1=17.2 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 16.41 UT: m1=16.9 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 14.21 UT: m1=17.2 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 12.38 UT: m1=17.6 ccd, Dia.=0.3’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 07.20 UT: m1=17.4 ccd, Dia.=0.1’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 27.39 UT: m1=17.5 ccd, Dia.=0.1’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

P/2012 O3 (McNaught)
2012 Sept. 21.07 UT: m1=17.7, DC=6; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

P/2012 NJ (La Sagra)
2012 Aug. 19.69 UT: m1=15.0, Dia.=-, DC=9; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, Japan)
2012 Aug. 07.99 UT: m1=13.3 ccd + V filter, Dia.=0.36′; 6.8cm R f:5.9; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Calibration stars taken from LONEOS V1316 Cyg 9 and SRO V1687_CYG sequences registered on the same 12 frames]
2012 Aug. 07.92 UT: m1=13.9 ccd + V filter, Dia.=0.28′; 15cm L f:5; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Calibration stars taken from SRO V1687_CYG and Henden M57 sequences]
2012 Jul. 22.96 UT: m11=14.1; 32cm reflector; Uwe Pilz (Leipzig, Germany) [stellar]
2012 July 19.16 UT: m1=13.8, DC=9; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Jul. 17.10 UT: m1=14.5, Dia.= –, DC=9; 20cm SCT (160x); Juan José González (Pandorado, 1190 m alt., León, España) [Objeto de apariencia asteroidal. Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden del sector de EG And. Movimiento evidente observado durante 10 minutos. Cielo muy claro de montaña]

C/2012 L2 (LINEAR)
2012 Nov. 06.83 UT: m1=14.7, Dia.=0.3′, DC=7; 20cm SCT (133x); Juan José González (Pandorado, alt. 1190 m, León, España)[Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden de Z Umi. Cielo muy claro de montaña]
2012 Sept. 17.05 UT: m1=17.7, DC=6; Visual Aperture 36″ F/ 3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

C/2012 L1 (Linear)
2012 Dic. 23.24 UT: m1=13.7, Dia.=0.7′, DC=3; 20cm SCT (133x); Juan José González (Armada – Sierra del Aramo, alt. 980 m, Asturias, España ) [ Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría APASS cercana al cometa]
2012 Dec. 09.73 UT: m1=14.3, Dia.=0.5′, DC=1; 50.8cm (307x); Sandor Szabo (Sopron, Hungary) [Very diffuse with small condensation but easily visible, much brighter than a month ago]

C/2012 K5 (LINEAR)
2012 Dec. 27.86 UT: m1=9.2, Dia.=3′, DC=3; 16cm Reflector (133x); Giuseppe Pappa (Sicily, Italy)
2012 Dec. 24.92 UT: m1=9.5, Dia.=3′, DC=4; 16cm Reflector (48x); Giuseppe Pappa (Sicily, Italy)
2012 Dec. 23.98 UT: m1=9.7, Dia.=2′, DC=4; 16cm Reflector (48x); Giuseppe Pappa (Sicily, Italy)
2012 Dec. 23.85 UT: m1=9.1, Dia.=3′, DC=6; 20.0-cm reflector; Man-To Hui (Canton, China) [city lights; 7′ tail in p.a. 270 deg.; coma close to a 12.1 mag star]
2012 Dic. 23.17 UT: m1=9.3, Dia.=3′, DC=6, Tail: 0.2 deg. in PA 270 deg.; 25×100 B; Juan José González (Armada – Sierra del Aramo, alt. 980 m, Asturias, España) [En 20 cm SCT (77x): m2=12.2 (Tycho-2)]
2012 Dec. 22.97 UT: m1=9.8, Dia.=2′, DC=5; 16cm Reflector (48x); Giuseppe Pappa (Sicily, Italy)
2012 Dec. 16.84 UT: m1=9.2, Dia.=1.5′, DC=6, Tail=0.08 deg.; 20cm L (36x); Artyom Novichonok (Konchezero, Russia) [Bright, easy visible, with tail]
2012 Dec. 15.89 UT: m1=9.4, Dia.=2.2′, DC=5; 20cm L (36x); Artyom Novichonok (Konchezero, Russia)
2012 Dec. 13.20 UT: m1=9.3, Dia.=0.4′, DC=6; 40cm L (62x); Sandor Szabo (Sopron, Hungary) [Tail is 0.1 deg long to PA 310-330 deg, curved!. Head is very small but bright]
2012 Dic. 09.49 UT: m1=9.5, Dia.=2´, DC=6, Cola: es visible; 15cm SCT (37x), Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Dic. 08.78 UT: m1=9.7, Dia.=3′, DC=5, Tail: 0.15 deg. in PA 330 deg.; 20cm SCT (77x); Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m, León, España) [m2=11.1 (Tycho-2)]
2012 Dec. 08.18 UT: m1=10.4, Dia.=3′, DC=5, Cola=9′; 20cm SCT (50x); Carlos Labordena (Castellón, España)
2012 Dec. 06.72 UT: m1=10.0, Dia.=1.2′, DC=5; 50.8cm (164x); Sandor Szabo (Sopron, Hungary) [Tail is 2’ long to the east]
2012 Dec. 05.72 UT: m1=9.8, Dia.=1′, DC=6; 32cm L f:5 (96x); Uwe Pilz (Leipzig, Germany)
2012 Nov. 24.78 UT: m1=9.9, Dia.=6′, DC=6/; 40.0cm L f/4.5 (36x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 22.20 UT: m1=10.2, Dia.=3.5′, DC=4/, Cola:0.1º en AP:350º; 20cm SCT (77x); Juan José González (Collado de Carmona, alt. 610 m, Cantabria, España)
2012 Nov. 12.79 UT: m1=10.1, Dia.=4′, DC=3, Cola:0.1º en AP:20º; 20cm SCT (77x); Juan José González (Pandorado, alt. 1190 m, León, España)
2012 Nov. 06.78 UT: m1=10.2, Dia.=4′, DC=3, Tail: 0.1 deg. in PA 30 deg.; 20cm SCT (77x); Juan José González (Pandorado, alt. 1190 m, León, España)
2012 Nov. 04.79 UT: m1=10.1, Dia.=4′, DC=3, Tail:0.1 deg. in PA 30 deg.; 20cm SCT (77x); Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1221 m, Asturias, España)[ m2=13.0 (APASS). Cola en abanico entre 0º y 60º, de longitud 0.1º en AP 30º]
2012 Oct. 20.78 UT: m1=12.0, Dia.=1.4′, DC=4; 20.3cm L (71x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comet alt. 17.3 deg; comparison stars taken from APASS (AQ)]
2012 Oct. 19.80 UT: m1=10.6, Dia.=4′, DC=2/; 20cm SCT (77x); Juan José González (Pico Cueto – Busfrío – Cudillero, alt. 725 m, Asturias, España)
2012 Oct. 12.79 UT: m1=11.5, Dia.=2′, DC=5; 20.3cm L f:6 (63x); Piotr Guzik (Szklary, Poland) [Bright and easy to see, moderately condensed. Method=S; Cat=TT]
2012 Oct. 05.82 UT: m1=10.5, Dia.=5′, DC=2/; 20cm SCT (77x); Juan José González (Ranedo de Curueño, alt. 1075 m, León, España) [Coma asimétrica]
2012 Sep. 16.74 UT: m1=12.6, Dia.=1.2′, DC=5; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [It’s pleasure to see this comet. It will be bright and rapid “New Year comet” in few months…]
2012 Sep. 15.76 UT: m1=13.1, Dia.=1.2′, DC=5; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 13.88 UT: m1=11.1, Dia.=5′, DC=3; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Más brillante que lo esperado. Coma asimétrica, m2=13.5 (APASS)]
2012 Sep. 13.81 UT: m1=12.0, Dia.=2.1′, DC=6; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2012 Sep. 11.74 UT: m1=12.9, Dia.=0.9′, DC=6; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Bright, easy object]
2012 Sep. 09.84 UT: m1=13.0, Dia.=0.8′x1.0′, DC=5; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary) [Coma is elongated, tail is 3’ long to PA 55 deg.]
2010 Sep. 09.82 UT: m1=12.7, Dia.=0.5′, DC=7; 32cm L f:5 (144x); Uwe Pilz (Leipzig, Germany)
2012 Ago. 21.94 UT: m1=13.7, 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 APASS cercana al cometa]
2012 Aug. 21.90 UT: m1=13.4, Dia.=1.6′, DC=4; 30cm L f:5 (94x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS. Motion observed over a 60-min period. Nearby field stars checked in DSS]
2012 Aug. 19.88 UT: m1=13.6, Dia.=0.8′, DC=5; 20.3cm L f:6 (63x); Piotr Guzik (Szklary, Poland) [Very clear sky. Relatively easy to see, small, moderately condensed object. Method=S; Cat=HS]
2012 Jul. 22.96 UT: m1=14.2, Dia.=0.4′, 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 Henden – sector UGC 10700. Movimiento evidente observado durante 35 minutos. Cielo muy claro de montaña]
2012 Jul. 10.10 UT: m1=16.0, DC=4; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

C/2012 J1 (Catalina)
2012 Dec. 24.04 UT: m1=13.8 ccd, Dia.=0.4’; Measures taken on CCD images unfiltered; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 16.75 UT: m1=13.3, Dia.=0.7′, DC=4; 20cm L (222x); Artyom Novichonok (Konchezero, Russia) [Very faint, near limit of the telescope]
2012 Dec. 16.03 UT: m1=13.5 ccd, Dia.=0.4’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 15.08 UT: m1=13.6 ccd, Dia.=0.4’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 13.44 UT: m1=13.7, Dia.=1.2’, DC=5/6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Easy to locate, faint outer coma, central condensation appears stellar in periods of good seeing with diffuse light surrounding the condensation of the inner coma, fading toward edges. Appears circular. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Dec. 12.04 UT: m1=13.6 ccd, Dia.=0.3’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Dec. 08.85 UT: m1=12.7, Dia.=1′, DC=5, Cola: no visible; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2012 Dic. 08.81 UT: m1=12.5, Dia.=1.2′, DC=6; 20cm SCT (133x); Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m, León, España)
2012 Dec. 04.08 UT: m1=[11.3; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Dic. 02.79 UT: m1=12.5, Dia.=1.3′, DC=6; 20cm SCT (133x); Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría APASS cercana al cometa. Cielo muy claro de montaña]
2012 Nov. 24.41 UT: m1=[12.1; 40.0cm L f/4.5 (257x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 20.05 UT: m1=13.4 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 17.84 UT: m1=13.6 ccd, Dia.=0.3’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 16.00 UT: m1=12.2 (S), Dia.=1′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Nov. 14.21 UT: m1=13.3 ccd, Dia.=0.6’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 13.75 UT: m1=12.4, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Nov. 11.98 UT: m1=11.9 (S), Dia.=1′, DC=5; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Nov. 11.92 UT: m1=13.4 ccd, Dia.=0.3’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 10.97 UT: m1=12.3, DC=6; Visual Aperture 91cm F:3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 10.94 UT: m1=13.2 ccd, Dia.=0.5’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 06.89 UT: m1=11.8, Dia.=1.2′, DC=6; 20cm SCT (100x); Juan José González (Pandorado, alt. 1190 m, León, España)
2012 Oct. 24.03 UT: m1=13.4 ccd, Dia.=0.5’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 21.08 UT: m1=[11.0; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Oct. 20.89 UT: m1=13.0, Dia.=0.6′, DC=7; 20.3cm L (120x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Comparison stars taken from APASS (AQ)]
2012 Oct. 19.19 UT: m1=12.4 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 17.03 UT: m1=13.6 ccd, Dia.=0.4’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 13.07 UT: m1=13.9 ccd, Dia.=0.5’, tail=0,8′ in PA:232°; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 09.78 UT: m1=12.7, Dia.=0.5′, DC=2; 32cm L f:5 (96x); Uwe Pilz (Leipzig, Germany)
2012 Oct. 09.00 UT: m1=13.4 ccd, Dia.=0.3’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 05.87 UT: m1=12.8, Dia.=0.8′, DC=6; 20cm SCT (133x); Juan José González (Ranedo de Curueño, alt. 1075 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación APASS cercanas al cometa]
2012 Sept. 24.24 UT: m1=13.7 ccd, Dia.=0.3’; Measures taken on CCD images); Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 15.94 UT: m1=13.7, Dia.=0.6′, DC=7; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 15.04 UT: m1=14.0, Dia.=0.6′, DC=5/; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sept. 14.03 UT: m1=13.0, DC=5; Visual Aperture 36″ F/ 3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 13.85 UT: m1=13.0, Dia.=0.9′, DC=7/; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2012 Sep. 11.95 UT: m1=13.5, Dia.=0.6′, DC=7; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Small, faint, compact]
2012 Sep. 10.95 UT: m1=13.7 ccd + V filter, Dia.=0.5′; 15cm L f:5; Mieczyslaw Leszek Paradowski (Lublin, Poland) [Calibration stars registered on the same 10 frames taken from APASS (AQ)]
2012 Sep. 09.90 UT: m1=13.7, Dia.=0.4′, DC=6; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary) [Very compact with stalike nucleus]
2012 Aug. 22.03 UT: m1=14.3, Dia.=0.6′, DC=6; 30cm L f:5 (188x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS. Motion observed over a 90-min period. Nearby field stars checked in DSS]
2012 Ago. 21.98 UT: m1=13.5, Dia.=0.6′, 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 APASS cercana al cometa]
2012 July 28.19 UT: m1=13.5, DC=5; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Jul. 19.03 UT: m1=[14.6, Dia.=0′.5; 35cm reflector (261x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 17.01 UT: m1=13.8, Dia.=0.5′, DC=4; 20cm SCT (206x); Juan José González (Pandorado, 1190 m alt., León, España)[Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden del sector de EG And. Cielo muy claro de montaña]

C/2012 F6 (Lemmon)
2012 Dec. 25.23 UT: m1=9.4, Dia.=4, DC=6; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2012 Dec. 24.25 UT: m1=9.5:, Dia.=1′, DC=4; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [close to TYC 6679-01094-1]
2012 Dec. 24.23 UT: m1=9.5, Dia.=4, DC=6; 25×100 B; Jose G. de S. Aguiar (Campinas, Brazil)
2012 Dec. 23.69 UT: m1=9.7, Dia.=5.5’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, close to bright stars, observation very difficult, faint tenuous outer coma, inner coma is bright, not stellar, moderately condensed. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=TK]
2012 Dec. 23.29 UT: m1=9.6 (S), Dia.=6′, DC=4; 22cm L (60x); Marco Goiato (Araçatuba, Brasil)
2012 Dec. 23.25 UT: m1=8.8, Dia.=7.0’, DC=3, Cola:no visible; 25cm SCT (40x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2012 Dic. 23.20 UT: m1=8.7, Dia.=7′, DC=3; 25×100 B; Juan José González (Armada – Sierra del Aramo, alt. 980 m, Asturias, España) [En 20 cm SCT (77x): m2=12.3 (APASS)]
2012 Dec. 20.65 UT: m1=9.4, Dia.=4.2’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma large, enhances well in Swan Band filter, close to bright stars and stars in vicinity of coma centre. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=TK]
2012 Dec. 18.67 UT: m1=9.4, Dia.=6′, DC=4; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)
2012 Dec. 18.64 UT: m1=9.2; Dia.=6′, DC=4; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Clearer observation. Moderately enhanced using Swan Band filter]
2012 Dec. 18.29 UT: m1=9.6, Dia.=3′,DC=4; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [nautical twilight]
2012 Dec. 17.68 UT: m1=9.7, Dia.=5.5’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma appears elongated to the NE, small central condensation, brightish inner coma gradually tapering to edges. Close to bright stars. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Dec. 17.63 UT: m1=9.5, Dia.=2′: 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Close to bright star. Somewhat enhanced through Swan Band filter]
2012 Dec. 17.45 UT: m1=9.5, Dia=6.1´, DC=5, Tail: Not visible; 40cm Dob f/4.5 (69x); Will Godward (Moonta, South Australia, Australia) [Comparison stars checked using Guide 8. Method=Sidgwick]
2012 Dec. 16.26 UT: m1=11.0, Dia.=2.0’, DC=1, Cola: no es visible; 25cm SCT (62x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2012 Dec. 13.65 UT: m1=9.8, Dia.=5.3’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma is large with faint edges, inner half of coma brighter with weakly formed central condensation, appears like a broad patch of light, gradually brightening to centre. No tail, outer coma appears elongated to the North, Swan Band filter enhances inner coma well. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=S; Cat=TK]
2012 Dec. 13.16 UT: m1=10.4, Dia.=3′, DC=3; 40cm L (62x); Sandor Szabo (Sopron, Hungary) [Very diffuse with a 14 mag starlike nucleus]
2012 Dec. 12.69 UT: m1=9.8, Dia.=6′, DC=4; 20cm L (57x); Michael Mattiazzo (Castlemaine, Victoria)
2012 Dec. 11.66 UT: m1=10.8, Dia.=2.5′, DC=5; 11.4cm f8 refl (43x); Rob Kaufman (Bright, Vic, Australia) [Coma moderately condensed. Ref= NOMAD1 data in ViZier; Method=M]
2012 Nov. 24.80 UT: m1=11.9, Dia.=1.7′, DC=5; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 22.24 UT: m1=11.3, Dia.=2.5′, DC=3; 20cm SCT (100x); Juan José González (Collado de Carmona, alt. 610 m, Cantabria, España)

C/2012 CH17 (MOSS)
2012 Jul. 19.86 UT: m1=14.0, Dia.=0′.4, DC=4; 35cm reflector (261x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.92 UT: m1=12.7, Dia.=1.8′, DC=3; 20cm SCT (133x); Juan José González (Pandorado, 1190 m alt., León, España)[Estrellas de campo comprobadas en el DSS]
2012 Jun. 23.92 UT: m1=[14.0, Dia.=!0.5′; 30cm L f:5 (188x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS (AQ). Faintest star 15.03 +/- 0.07 mag (AQ) in FOV at 188x]

C/2012 C2 (Bruenjes)
2012 Feb. 20.81 UT: m1=10.3, Dia.=4′, DC=2; 20cm SCT (77x); Juan José González (Collada de la Cobertoria, alt. 1175 m., Asturias, España) [Débil coma externa]
2012 Feb. 19.10 UT: m1=[11.7; 25cm Reflector (48x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Feb. 14.10 UT: m1=[11.1; 25cm Reflector (120x); Salvador Aguirre (Hermosillo, Sonora, Mexico)

C/2012 A2 (LINEAR)
2012 Nov. 24.83 UT: m1=13.7, Dia.=0.7′, DC=3/; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 18.16 UT: m1=15.0, DC=4; Visual Aperture 91cm F:3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Nov. 13.74 UT: m1=14.5; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Nov. 06.87 UT: m1=10.4, Dia.=4′, DC=2; 20cm SCT (77x); Juan José González (Pandorado, alt. 1190 m, León, España)
2012 Nov. 04.81 UT: m1=10.5, Dia.=4′, DC=2; 20cm SCT (77x); Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1221 m, Asturias, España)
2012 Oct. 13.81 UT: m1=11.1, Dia.=3′, DC=3, cola no visible; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2012 Sep. 22.96 UT: m1=13.8, Dia.=1.1′, DC=5; 20.3cm L f:5.9 (133x); Mieczyslaw Leszek Paradowski, (Dabrowa, Poland) [Comparison stars taken from APASS (AQ). Faintest star 14.9 mag (AQ) seen in FOV near the comet. Motion observed over 60-min period. Nearby field stars checked in DSS]
2012 Sep. 18.02 UT: m1=[14.1; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [I couldn’t see this comet, but stars to ~15.5m in near field was seen]
2012 Sep. 15.80 UT: m1=[12.5; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Sep. 13.85 UT: m1=13.4, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Sep. 12.98 UT: m1=[13.7; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 09.83 UT: m1=14.3, Dia.=0.5′, DC=1; 50.8cm L (351x); Sandor Szabo (Sopron, Hungary) [Very close to a 9.5 mag bright star, but can be seen easily]
2012 Sep. 06.86 UT: m1=10.7, Dia.=4′, DC=2; 20cm SCT (100x); Juan José González (Llamas de Rueda, alt. 990 m, León, España) [Estrella de mag. 13.3 (APASS) en la coma]
2012 Ago. 22.12 UT: m1=11.3, Dia.=2.5′, DC=2/; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Más brillante que lo esperado. Coma elongada, con débil región externa]
2012 Jul. 12.99 UT: m1=13.7, Dia.=1.3′, DC=3; 20cm SCT (133x); Juan José González (Pandorado, 1190 m alt., León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría APASS cercana al cometa. Cielo muy claro de montaña.]

C/2011 W3 (Lovejoy)
2012 Jan. 23.52 UT: David A. J. Seargent (Cowra, NSW, Australia) [what could best be described as a very faint, rather broad, ribbon of sky slightly less dark than the background field was glimpsed in both 25×100 and 15×80 binoculars. Position and orientation seemed consistent with tail, but too vague for any measurement.]
2012 Jan. 22.52 UT: David A. J. Seargent (Cowra, NSW, Australia) [what could best be described as a very faint, rather broad, ribbon of sky slightly less dark than the background field was glimpsed in both 25×100 and 15×80 binoculars. Position and orientation seemed consistent with tail, but too vague for any measurement.]
2012 Jan. 17.48 UT: Tail= 1.0 degree in PA= 55 degree; 25×100 binoculars; David A. J. Seargent (Cowra, NSW, Australia) [Very faint beam of light seen with averted vision. No real head discernible. Tail possibly glimpsed using 15×80 binoculars, but not with 6×35 binoculars.]
2012 Jan. 16.47 UT: m1=9.6; 25×100 binoculars; David A. J. Seargent (Cowra, NSW, Australia) [Very faint elongated glow. Mag. estimate of brighter region, but should not be given too much weight as no real “head” was visible.]
2012 Jan. 06.292 UT: m1=8.5, Dia.=7′, DC=1, cauda 1º em AP 210 graus; 20X100 B; Marco Goiato (Araçatuba, Brasil) [altitude do cometa: 19º]
2012 Jan. 04.69 UT: m1=7.1, Tail= 31 degrees in PA= 221 degrees; 6×35 B & Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail very faint in a very clear sky]
2012 Jan. 03.68 UT: m1=6.9, Tail= 20 degrees in PA= 218 degrees; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Tail very faint. barely glimpsed using averted vision. Patches of high cloud, but cleared from region of comet.]
2012 Jan. 03.28 UT: m1=6.6; 11×80 B; Jose G. de S. Aguiar (Campinas, Brazil)
2012 Jan. 02.69 UT: m1= , Tail= 42 degrees in PA= 224 degrees; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Head of comet hidden by high cloud, but tail more readily visible than previous morning]
2012 Jan. 02.29 UT: m1=6.3; 11×80 B; Jose G. de S. Aguiar (Campinas, Brazil)
2012 Jan. 02.271 UT: m1=6.5, Dia.=12′, DC=3, cauda 10º em AP 225 graus; 7X50 B; Marco Goiato (Araçatuba, Brasil) [Nuvens, altitude do cometa: 13º]
2012 Jan. 01.68 UT: m1=6.7; 6×35 B; David A. J. Seargent (Cowra, NSW, Australia) [Coma just a slight intensification and “swelling” at end of tail. May be a little more differentiated from rest of tail than in early observations as it maintains its general form while tail fades]
2012 Jan. 01.68 UT: m1=6.7, Tail: 26 degrees in PA= 222 degrees; Naked eye; David A. J. Seargent (Cowra, NSW, Australia) [Tail considerably fainter than previous morning (though sky may not have been quite as transparent). Only clearly seen using averted vision.]

C/2011 UF305 (LINEAR)
2012 Dec. 13.19 UT: m1=12.8, Dia.=1.3′, DC=2; 40cm L (153x); Sandor Szabo (Sopron, Hungary) [Big, diffuse comet with small condensation]
2012 Nov. 24.81 UT: m1=12.9, Dia.=1.2′, DC=1/; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 18.22 UT: m1=14.0, DC=3; Visual Aperture 91cm F:3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 17.04 UT: m1=12.5, Dia.=1.7′, DC=3; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Diffuse, moderately bright]
2012 Sep. 16.03 UT: m1=13.3:, Dia.=2.2′, DC=3; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 15.80 UT: m1=11.5, Dia.=2.5′, DC=1/; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, Japan)
2012 Sep. 13.03 UT: m1=13.3, Dia.=1.7′, DC=3; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 12.03 UT: m1=[12.5; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Maybe seen, I’m not sure. I will do one more attempt in few days, after Moon]
2012 Ago. 22.16 UT: m1=10.3, Dia.=3.5′, DC=3; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 13º. Cielo muy claro de montaña]
2012 Ago. 17.87 UT: m1=11.3, Dia.=1′, DC=3, no cola; 23.5cm SCT(138x); Carlos Labordena (Castellón, España)
2012 Ago. 09.92 UT: m1=10.0, Dia.=4′, DC=3; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 12º. Cielo muy claro de montaña]
2012 Jul. 22.94 UT: m1=10.3, Dia.=4.5′, DC=3; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Mejores condiciones atmosféricas de observación permitieron realizar una estimación más brillante que la obtenida hace seis días: amplia coma con débil región exterior]
2012 Jul. 20.90 UT: m1=11.5, Dia.=2′.2, DC=4; 35cm reflector (73x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 19.88 UT: m1=11.6, Dia.=1′.8, DC=5; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.96 UT: m1=10.7, Dia.=5′, DC=3/; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España) [Coma elongada]
2012 Jul. 12.97 UT: m1=10.7, Dia.=4.5′, DC=3/; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España)
2012 Jun. 23.95 UT: m1=12.0, Dia.=1.4′, DC=5; 30cm L f:5 (188x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS (AQ). Twilight; faintest star 14.04+/-0.12 mag (AQ) in FOV at 188x]
2012 Jul. 23.86 UT: m1=11.9, Dia.=1.5′, DC=3; 20.3cm L f:6 (63x); Piotr Guzik (Szklary, Poland) [Method=M; Cat=TK]
2012 Jun. 22.89 UT: m1=11.7, Dia.=3.0′, DC=5; 25.4 cm reflector (60x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 16.95 UT: m1=11.3, Dia.=1.5′, DC=3, no cola; 23.5cm SCT (138x); Carlos Labordena (Castellón, España)
2012 Jun. 14.03 UT: m1=10.9, Dia.=2.5′, DC=3; 20cm SCT (77x); Juan José González (Alto del Castro, 1720 m alt., León, España)
2012 May. 19.93 UT: m1=12.1, Dia.=1.1′, DC=5; 20.3cm L f:6 (150x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS V-band photometry (AQ). Faintest star 14.6 mag (HS) in FOV at 150x. Motion observed in a 30-min period]
2012 May. 18.91 UT: m1=12.0, Dia.=1.2′, DC=5; 25.4 cm reflector (60x); Vyacheslav Ivanov (Melovoe, Russia)
2012 May. 17.92 UT: m1=12.3, Dia.=1′, DC=3; 32cm reflector (96x); Uwe Pilz (Leipzig, Germany)
2012 May. 14.92 UT: m1=11.2, Dia.=3.0′, DC=3; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España)
2012 May. 13.99 UT: m1=[13.0, Dia.=!0.5′; 20.3cm L f:6 (120x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS V-band photometry (AQ). VLmag=6.5 and the faintest star 14.0 (AQ) in FOV at 120x. Despite clear sky the comet was not seen]
2012 May. 12.85 UT: m1=13.2, Dia.=0.7′, DC=6; 25.4 cm reflector (60x); Vyacheslav Ivanov (Melovoe, Russia)
2012 May. 09.97 UT: m1=11.2, Dia.=2.5′, DC=3; 20cm SCT (100x); Juan José González (El Fito – Sierra del Sueve, 570 m alt., Asturias, España)
2012 Apr. 22.84 UT: m1=11.8, Dia.=1´, DC=1; 32cm L f:5 (120x); Uwe Pilz (Leipzig, Alemania)
2012 Apr. 21.82 UT: m1=13.3, Dia.=0.7′, DC=5; 21.0cm Cassegrain; M.-T. Hui (Mt. Mulan, Wuhan, China)
2012 Mar. 28.15 UT: m1=14.2, Dia.=0.3′, DC=7; 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, campo de SS Cyg. Movimiento seguido durante 20 min. Cielo muy claro de montaña]

C/2011 R1 (McNaught)
2012 Oct. 10.40 UT: m1=11.6, Dia.=2.2’, DC=0/1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Background star in vicinity making obs difficult, no tail, coma transparent with slight gradual brightening toward centre but broadly diffused. Comparison stars checked using APASS data in Guide 9.0; Method=S; Cat=AQ]
2012 Oct. 08.42 UT: m1=11.8; 25.5cm L (71x); David A. J. Seargent (Cowra, NSW, Australia) [Very vague and diffuse object of low surface brightness]
2012 Oct. 04.41 UT: m1=11.2, Dia.=2.3’, DC=0/1; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma large and evenly diffuse although coma appears transparent, no tail. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Sep. 14.41 UT: m1=11.6, Dia.=4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma large and evenly diffuse, no tail, averted vision, inner half of coma slightly brighter than coma edges and uniformly diffuse. Comet situated in Coal Sack region, isolated from nearby stars which made observation easier than previous attempts. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Sep. 12.01 UT: m1=12.7 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 11.01 UT: m1=12.3 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 03.39 UT: m1=12.3, Dia.=0.8’, DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Observation made difficult due to crowded starfield, coma is visible as a transparent haze using averted vision. Comparison stars checked using ASAS-3 data online; Method=S; Cat=AU]
2012 Aug. 25.70 UT: m1=12.5, Dia.=2.5′, DC3/; 30cm Dobson; Con Stoitsis (Clonbinane, Victoria, Australia)
2012 Aug. 24.77 UT: m1=12.2, Dia.=3.2’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Difficult to observe due to crowded star field, coma diffuse and quite transparent, no tail. Comparison stars checked using APASS data in Guide 9.0; Method=S; Cat=AQ]
2012 Aug. 06.40 UT: m1=11.5, Dia.=2.8’, DC=3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, inner coma slightly brighter than outer edges. Comparison stars checked using Tycho-2 catalogue in Guide 9.0; Method= S; Cat= TK]
2012 Aug. 04.39 UT: m1=11.5, Dia.=1.6’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and almost evenly diffuse, fading out at edges, background star in coma, moonlight interference (moon below horizon). Comparison stars checked using ASAS-3 data online; Method= S; Cat= AU]
2012 Jul. 28.38 UT: m1=12.1 ccd, Dia.=0′.9; 30.5cm schmidt-cassegrain + CCD; Jakub Cerny [remotly FRAM Malargue, Argentina]
2012 Jul. 28.33 UT: m1=11.3 (S), Dia=1.5′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jul. 27.38 UT: m1=12.0 ccd, Dia.=1′.2; 30.5cm schmidt-cassegrain + CCD; Jakub Cerny [remotly FRAM Malargue, Argentina]
2012 Jul. 21.33 UT: m1=11.3 (S), Dia.=2′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jul. 16.76 UT: m1=11.9, Dia.=2’, DC=4/5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, small central condensation, almost stellar. Uniform brightness across coma, enhances moderately with Swan Band filter. Comparison stars checked using Tycho-2 catalogue in Guide 9.0; Method= M; Cat= TK]
2012 Jun. 30.35 UT: m1=11.8 (S), Dia.=1′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jun. 24.75 UT: m1=12.4, Dia.=2’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, central condensation appears tight but diffuse. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 19.76 UT: m1=12.5, Dia.=1.6’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, inner coma brighter than the edges, Swan band filter enhances inner coma slightly, central condensation almost stellar. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 18.76 UT: m1=12.1, Dia.=1.8’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma best visible using averted vision. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 15.73 UT: m1=12.0, Dia.=2.5’, DC=3/4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, does not enhance with Swan Band filter. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 14.75 UT: m1=12.3, Dia.=2’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]

C/2011 O1 (LINEAR)
2012 Nov. 15.03 UT: m1=16.0 ccd, Dia.=0.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 06.09 UT: m1=15.7 ccd, Dia.=0.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 07.10 UT: m1=14.8 ccd, Dia.=0.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 14.04 UT: m1=14.9 ccd, Dia.=0.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 12.04 UT: m1=15.0 ccd, Dia.=0.4′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Jul. 27.07 UT: m1=14.5 ccd, Dia.=0′.5; 30.5cm schmidt-cassegrain + CCD; Jakub Cerny (Senohraby, Czech Republic) [remotly FRAM Malargue, Argentina]
2012 Jul. 11.13 UT: m1=14.8 ccd, Dia.=0′.4; 30.5cm schmidt-cassegrain; Jakub Cerny (Senohraby, Czech Republic) [remotly FRAM Malargue, Argentina]

C/2011 L4 (PANSTARRS)
2012 Dec. 27.32 UT: m1=8.0: (S), Dia.=2′, DC=4; 20×100 B; Marco Goiato (Araçatuba, Brasil) [nautical twilight, comet altitude: 9º, sun altitude: -12 º]
2012 Dec. 24.748 UT: m1=9.0 ccd, Dia.=1.1′; 20.3cm f2.1 SCT + QHY9 8300 Unfiltered, UCAC4 R; Terry Lovejoy (Australia)
2012 Dec. 24.30 UT: m=8.1:, Dia.=1′; 18 cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [altitude 8.5 deg, sun altitude -12 deg]
2012 Dec. 23.72 UT: m1=9.1, Dia.=3’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma small with diffuse edges, bright central condensation showing a hint of stellaring, rapidly fading to coma edge, no obvious tail was observed. Observation difficult due to low altitude, cloud in vicinity and encroaching twilight. Comet was observed in cloud gaps. Magnitude estimate not corrected for extinction. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2012 Nov. 02.87 UT: m1=10.7 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 31.37 UT: m1=10.8 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 30.373 UT: m1=11.1 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 25.368 UT: m1=11.2 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 23.373 UT: m1=11.4 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 15.40 UT: m1=11.4, Dia=1.5’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and even in brightness with small central condensation, zodiacal light interference, averted vision. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Oct. 14.94 UT: m1=10.1 (S), Dia.=2′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Oct. 14.37 UT: m1=11.9, Dia.=1′; 107x30cm Visual; Terry Lovejoy (Thornlands, Queensland, Australia) [ASAS-3]
2012 Oct. 13.39 UT: m1=11.5, Dia.=1′; 107x30cm Visual; Terry Lovejoy (Thornlands, Queensland, Australia) [ASAS-3]
2012 Oct. 12.01 UT: m1=10.6 ccd, Dia.=0.8′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 10.39 UT: m1=11.5, Dia.=1.5’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma appears evenly diffuse, elongated to ENE, bright central condensation, averted vision. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Oct. 09.01 UT: m1=10.6 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 07.93 UT: m=10.0:, DC=2/; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Oct. 07.00 UT: m1=10.7 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 04.38 UT: m1=11.9, Dia.=1.2’, DC=6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to the East, small bright central condensation, outer coma does not enhance in Swan Band filter, central condensation dims but is visible in Swan Band filter. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Oct. 04.365 UT: m1=11.8 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 03.359 UT: m1=11.8 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Oct. 01.45 UT: m1=11.0, Dia.=2.0′, DC=7; 30 cm Dobsonian; Con Stoitsis (Clonbinane, Victoria, Australia) [Coma elongated to the ESE. Stellar central condensation. No tail visible]
2012 Oct. 01.00 UT: m1=10.8 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 28.352 UT: m1=12.2 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Sep. 18.04 UT: m1=11.3 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 16.49 UT: m1=[9.5, Dia.=!3′; 20.0cm reflector; Man-To Hui (Luogang, Canton, China) [severe city lights in this direction]
2012 Sep. 15.03 UT: m1=11.6 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 14.39 UT: m1=12.2, Dia.=2.3’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Elongated to ENE @ x83, coma edges best seen using averted vision, small dim stellar central condensation comparable to a mag 13.1 star, no tail, slight interference by zodiacal light. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Sep. 14.03 UT: m1=11.6 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 13.44 UT: m1=11.3; 25.4cm reflector (71x); David A. J. Seargent (Cowra, NSW, Australia) [Attempted to observe with 25×100 binocular telescope, but did not see it with certainty]
2012 Sep. 13.02 UT: m1=11.4 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 12.46 UT: m1=11.3; 25.4cm reflector (71x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Sep. 12.02 UT: m1=11.3 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 11.42 UT: m1=11.8, Dia.=1.0′, DC=7; 20cm L (67x); Michael Mattiazzo (Castlemaine, Victoria)
2012 Sep. 11.03 UT: m1=11.7 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 09.43 UT: m1=11.4, Dia.=3´, DC=2; 25.4cm reflector (71x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Sep. 09.39 UT: m1=12.4, Dia.=0.8’, DC=5/6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Slight elongation to ENE. Observation was affected by smoke haze from nearby hazard reduction burns. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Sep. 09.35 UT: m1=10.8, Dia.=2.0′, DC3/; 30cm Dobson; Con Stoitsis (Clonbinane, Victoria, Australia)
2012 Sep. 08.43 UT: m1=12.5 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Sep. 04.41 UT: m1=12.1, Dia.=1.5’, DC= 6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Bright stellar central condensation, coma is small and evenly diffuse, coma extension to ENE not noticeable at 39x but quite noticeable at 83x, coma does not enhance with Swan Band filter, slight interference by zodiacal light. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Sep. 04.01 UT: m1=11.6 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 03.39 UT: m1=12.4, Dia.=0.9’, DC= 6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Broad short coma extension to ENE, bright stellar central condensation. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Sep. 03.02 UT: m1=11.5 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 02.91 UT: m=10.8, Dia.=1′, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Ago. 21.92 UT: m=11.5:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Ago. 21.86 UT: m1=9.5, Dia.=6′, DC=2/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Coma amplia y elongada, con débil región externa. Altura sobre el horizonte: 9º. Fin del crepúsculo astronómico. Cielo muy claro de montaña]
2012 Aug. 20.38 UT: m1=12.6, Dia.=1.7’, DC=6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Inner coma has circular patch of light around stellar central condensation, broad fan-like elongation to the ENE. Central condensation enhances in Swan Band filter, outer coma does not. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Aug. 19.37 UT: m1=12.9, Dia.=1.7’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma elongated to ENE. Small, bright, stellar central condensation, faint outer coma best visible using averted vision. Comparison stars checked using APASS data in Guide 9.0; Method=M; Cat=AQ]
2012 Aug. 18.04 UT: m1=11.8 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Ago. 17.88 UT: m1=10.9, Dia.=2′, DC=3, no cola; 23.5cm SCT(94x); Carlos Labordena (Castellón, España)
2012 Ago. 15.93 UT: m=11.5:, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Aug. 15.03 UT: m1=11.7 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Ago. 14.92 UT: m=11.0, Dia.=1′, DC=6; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Aug. 13.99 UT: m1=11.8 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic)[robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 12.13 UT: m1=[11.5; 15cm SCT (62x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Ago. 10.92 UT: m1=11.5:, Dia.=[0′.5, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [Tycho-2]
2012 Ago. 09.88 UT: m1=9.8, Dia.=5′, DC=2; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Coma amplia y elongada, con débil región externa. Altura sobre el horizonte: 11º. Fin del crepúsculo astronómico. Cielo muy claro de montaña. Estrella de mag. 11.6 (GSC) en coma]
2012 Aug. 08.94 UT: m1=11.6 (S), Dia.=2′, DC=3; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Ago. 08.91 UT: m1=11.5, Dia.=0′.5, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [Tycho-2]
2012 Ago. 07.91 UT: m1=11.6; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [Tycho-2]
2012 Ago. 06.92 UT: m1=11.8:, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [Tycho-2]
2012 Aug. 06.38 UT: m1=12.3, Dia.=1.6’, DC=6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and elongated to the NE. Comparison stars checked using ASAS-3 data online; Method= M; Cat= AU]
2012 Aug. 06.04 UT: m1=12.1, Dia.=1.6′; 15cm reflector; Jakub Cerny (Senohraby, Czech Republic)
2012 Ago. 05.96 UT: m1=11.6:; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [Tycho-2]
2012 Aug. 05.449 UT: m1=12.7 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Aug. 05.02 UT: m1=11.9, Dia.=1.5′; 15cm reflector; Jakub Cerny (Senohraby, Czech Republic)
2012 Aug. 04.38 UT: m1=12.8, Dia.=0.8’, DC= 6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with elongation to NE approximately, close to bright star, bright stellar central condensation, coma disappears somewhat using Swan Band filter with only a very faint remnant of the central condensation visible. Comparison stars checked using ASAS-3 data online; Method= M; Cat= AU]
2012 Jul. 28.453 UT: m1=12.8 ccd, Dia.=-;20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Jul. 23.01 UT: m1=12.0; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [ASAS-3]
2012 Jul. 22.91 UT: m1=10.2, Dia.=5′, DC=2/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Mejores condiciones atmosféricas de observación permitieron realizar una estimación más brillante que la obtenida hace seis días: amplia coma con débil y muy difusa región exterior]
2012 Jul. 20.92 UT: m1=12.0, DC=8; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [ASAS-3]
2012 Jul. 20.88 UT: m1=12.7, Dia.=1′.0, DC=7/; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 19.91 UT: m1=12.0, Dia.=0.5′, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [ASAS-3]
2012 Jul. 19.85 UT: m1=12.5, Dia.=1′.3, DC=7; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 19.52 UT: m1=12.4, Dia.=1.5′; 25.4cm reflector (71x); David A. J. Seargent (Cowra, NSW, Australia) [Possibly elongated at 114x]
2012 Jul. 18.52 UT: m1=12.6, Dia.=1′; 25.4cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia) [Poss seen at 71X, (m = 12.4) but clouds prevented confirmation.]
2012 Jul. 17.85 UT: m1=12.7, Dia.=1′.3, DC=7; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.91 UT: m1=11.1, Dia.=3.5′, DC=3; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España)[Coma elongada con región exterior débil y muy difusa, probablemente más amplia que 6′]
2012 Jul. 16.37 UT; m1= 12.8, Dia.=1.5’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Small bright central condensation with faint outer coma, best visible using averted vision at x39. Comparison stars checked using APASS catalogue in Guide 9.0; Method= M; Cat= AQ]
2012 Jul. 15.85 UT: m1=12.2, Dia.=1′.0, DC=7; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 15.37 UT: m1=12.5, Dia.=1.2’, DC=6; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Bright stellar central condensation, wispy faint outer coma which is broad and elongated to the ENE. Comparison stars checked using ASAS-3 online catalogue; Method= M; Cat= AU]
2012 Jul. 13.60 UT: m1=12.8, Dia.=1′; 25.4cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Jul. 12.94 UT: m1=11.3, Dia.=2.5′, DC=4; 20cm SCT (133x); Juan José González (Pandorado, 1190 m alt., León, España)[Coma elongada con región exterior débil y muy difusa, probablemente más amplia que 6′]
2012 Jul. 12.94 UT: m1=12.1:, Dia.=[0′.5, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil) [ASAS-3]
2012 Jul. 11.07 UT: m1=12.1 ccd, Dia.=0′.5; 30.5cm schmidt-cassegrain; Jakub Cerny (Senohraby, Czech Republic)
2012 Jul. 10.12 UT: m1=12.2 ccd, Dia.=0′.4; 30.5cm schmidt-cassegrain; Jakub Cerny (Senohraby, Czech Republic)
2012 Jul. 08.58 UT: m1=12.0, Dia.=1.4′, DC=4/; 20cm f/5 reflector (119x); Man-To Hui (Luogang, Canton, China) [city light pollution]
2012 Jul. 07.49 UT: m1=12.8 ccd; 20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Jul. 06.57 UT: m1=12.0, Dia.=1.2′, DC=4; 20cm f/5 reflector (119x); Man-To Hui (Canton, China) [light pollution; moonlight towards the end of observation]
2012 Jun. 24.97 UT: m1=12.5:, Dia.=[0.5′, DC=7; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 Jun. 24.47 UT: m1=12.9, Dia.=0.7’, DC=6; 25cm L f:5 (83x) [Chris Wyatt, Walcha, NSW, Australia] [No tail, outer coma very faint, small stellar central condensation. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 23.90 UT: m1=13.0:, Dia.=0.5′, DC=6; 30cm L f:5 (188x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from ASAS-3 catalogue (AU). Comet alt. 10.5 deg; faintest star 14.98+/-0.05 mag (AQ)in FOV at 188x]
2012 Jun. 23.42 UT: m1=13.1, Dia.=0.8’, DC=6; 25cm L f:5 (83x) [Chris Wyatt, Walcha, NSW, Australia] [Coma has diffuse outer coma, coma elongated to NE approximately. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Jun. 22.85 UT: m1=12.7, Dia.=0.6′, DC=2; 25.4cm reflector (171x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 22.85 UT: m1=12.3, Dia.=0.3′, DC=3; 25.4cm reflector (120x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 20.85 UT: m1=12.5, Dia.=0.5′, DC=3; 25.4cm reflector (171x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 20.85 UT: m1=12.2, Dia.=0.3′, DC=3; 25.4cm reflector (120x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 20.52 UT m1=13.1, Dia.=0.7′; 25.4-cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Jun. 19.53 UT m1=13.0, Dia.=1′; 25.4-cm reflector (71x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Jun. 19.43 UT: m1=13.0, Dia.=0.5’, DC=6/7; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to NE approximately, disappears when Swan Band filter is applied, at x156 the elongation could be described as a tail 0.2’ in length in position angle 067°. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Jun. 18.90 UT: m1=12.2, Dia.=0.7′, DC=5; 20.3cm L f:6 (150x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from ASAS All Star Catalogue (AU). Comet alt. 11.6 deg; Faintest star 13.9 mag in FOV at 150x. The same comparison stars from APASS (AQ) give also the m1=12.2, whereas from GSC catalogue (HS) give much worse value m1=12.9]
2012 Jun. 18.38 UT: m1=13.4, Dia.=0.5’, DC=6/7; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma small and has bright stellar central condensation, coma elongated to the NE. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Jun. 18.08 UT: m1=11.9 (S), Dia.=1′, DC=5; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jun. 16.98 UT: m1=12.6, Dia.=0.8′, DC=4, no cola; 23.5cm SCT (138x); Carlos Labordena (Castellón, España)
2012 Jun. 15.40 UT: m1=12.8, Dia.=0.5’, DC=7; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, observation made difficult due to crowded star field, coma elongated to NE. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Jun. 14.85 UT: m1=12.5, Dia.=0.5′, DC=3; 25.4 cm reflector (171x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 14.85 UT: m1=12.9, Dia.=0.2′, DC=6; 25.4 cm reflector (120x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Jun. 14.39 UT: m1=12.8, Dia.=0.5’, DC=6/7; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, small compact central condensation. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2012 Jun. 13.95 UT: m1=11.8, Dia.=3.0′, DC=2/; 20cm SCT (133x); Juan José González (Alto del Castro, 1720 m alt., León, España) [Condensación central con m2=13.3 (GSC), rodeada de una coma difusa ].
2012 Jun. 12.46 UT m1=13.1; 25.4cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia)
2012 Jun. 12.12 UT: m1=12.0 (S), Dia.=1′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jun. 08.99 UT: m1=12.4, Día.=1′; 25cm STC + CCD; Fernando Tifner y Luis Mansilla (Rosario, Argentina) [CCD box 60×60”]
2012 May. 26.502 UT: m1=12.8 ccd, Dia.=0.7′;20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 May. 21.58 UT: m1=13.3, Dia.=0.9′; 25.4cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia)
2012 May. 19.435 UT: m1=13.1 ccd, Dia.=0.7′;20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 May. 18.54 UT: m1=13.3; 25.4cm reflector (114x); David A. J. Seargent (Cowra, NSW, Australia)
2012 May. 17.456 UT: m1=13.1 ccd, Dia.=0.7′;20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 May. 15.08 UT: m1=12.2, Dia.=2.5′, DC=2; 20cm SCT (133x); Juan José González (Pandorado, 1190 m alt., León, España) [Condensación central de m2=14.2 (HN), rodeada de una coma débil y difusa. Estrellas de campo comprobadas en el DSS. Estrellas de comparación para m2 tomadas de la fotometría Henden de HP Lib. Cielo muy claro de montaña]
2012 May. 13.451 UT: m1=13.3 ccd, Dia.=0.7′;20.3cm f:2.1 SCT; Terry Lovejoy (Thornlands, Queensland, Australia) [CCD QHY9 8300 Unfiltered, UCAC4 R]
2012 Mar. 28.19 UT: m1=14.6, Dia.=0.3′, DC=7; 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, campo de HP Lib. Cielo muy claro de montaña]

C/2011 F1 (LINEAR)
2012 Nov. 04.78 UT: m1=9.0, Dia.=5′, DC=3; 20cm SCT (100x); Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1221 m, Asturias, España) [Altura sobre el horizonte: 6º. Cielo muy claro de montaña]
2012 Oct. 05.81 UT: m1=9.3, Dia.=7′, DC=2/; 20cm SCT (77x); Juan José González (Ranedo de Curueño, alt. 1075 m, León, España) [Altura sobre el horizonte: 17º. Cielo muy claro de montaña]
2012 Sept. 20.19 UT: m1=13.4 ccd, Dia.= 0.8’; Measures taken on CCD images); Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sept. 17.21 UT: m1=12.3 ccd, Dia.=1.0’, tail: 2,0′ PA 14°; Measures taken on CCD images); Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 15.72 UT: m1=12.1, Dia.=2.2′, DC=3; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 14.38 UT: m1=11.0, Dia.=3.8’, DC=4/5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, appears elongated to WNW, small central condensation, almost stellar with gradual brightening from edges to inner coma. Comparison stars checked using TASS-4 data in Guide 9.0; Extinction corrected; Method=S; Cat=TA]
2012 Sept. 14.02 UT: m1=13.5 ccd, Dia.=0.7’; Measures taken on CCD images); Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 13.86 UT: m1=9.8, Dia.=6′, DC=2/; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Coma elongada]
2012 Sep. 13.80 UT: m1=11.4, Dia.=3.5′, DC=4/; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2012 Sep. 11.72 UT: m1=11.9, Dia.=2.5′, DC=4/; 35.6cm L (64x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Big, diffuse]
2012 Sep. 09.81 UT: m1=12.3, Dia.=3.0′, DC=4; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary) [Coma is elongated to PA 310 deg.]
2012 Sep. 09.81 UT: m1=10.0, Dia.=2.5′, DC=2; 32cm L f:5 (96x); Uwe Pilz (Leipzig, Germany)
2012 Sep. 07.94 UT: m1=10.5 (S), Dia.=3′, DC=2/; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Sep. 06.85 UT: m1=10.4, Dia.=6′, DC=3; 20cm SCT (100x); Juan José González (Llamas de Rueda, alt. 990 m, León, España)
2012 Sep. 04.40 UT: m1=11.6; Dia.=3.2’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, close to bright star, diffuse coma. Comparison stars checked using TASS-4 data in Guide 9.0; Method=S; Cat=TA]
2012 Sep. 03.37 UT: m1=11.8, Dia.=2’, DC=3/4; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, small bright central condensation noticeable in good seeing using averted vision. Comparison stars checked using TASS-4 data in Guide 9.0; Method=S; Cat=TA]
2012 Aug. 24.08 UT: m1=12.6 ccd, Dia.=0.7’, tail: 1.6′ PA: 93°; Measures taken on CCD images; Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Aug. 23.53 UT: m1=10.8, Dia.=3.0′, DC=3; 20.0cm reflector; Man-To Hui (Luogang, Canton, China) [city light pollution and moonlight]
2012 Ago. 21.91 UT: m1=10.8, Dia.=3.5′, DC=3; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrella de mag. 11.4 (Tycho-2) en coma]
2012 Aug. 19.86 UT: m1=11.3, Dia.=1.5′, DC=4; 20.3cm L f:6 (63x); Piotr Guzik (Szklary, Poland) [Method=M; Cat=TK]
2012 Aug. 19.36 UT: m1=12.9, Dia.=1.3’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, close to bright star, tenuous outer coma increasing in brightness to centre, almost stellar central condensation. Comparison stars checked using TASS-4 data in Guide 9.0; Method=S; Cat=TA]
2012 Aug. 18.85 UT: m1=12.4, Dia.=1.5′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Aug. 18.46 UT: m1=10.6, Dia.=2.4′, DC=3; 40.0cm L f/4.5 (75x); Seiichi Yoshida (Gunma, Japan)
2012 Ago. 17.89 UT: m1=11.8, Dia.=2′, DC=2, no cola; 23.5cm SCT(138x); Carlos Labordena (Castellón, España)
2012 Aug. 14.98 UT: m1=11.9 ccd, Dia.=1.1′; 30.5 cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 12.13 UT: m1=[11.3; 15cm SCT (62x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Ago. 09.94 UT: m1=11.0, Dia.=3.5′, DC=3; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrella de mag. 12.4 (GSC) en coma]
2012 Aug. 06.38 UT: m1=12.2, Dia.=2.5’, DC= 3; 25cm L, f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, close to bright star. Comparison stars checked using TASS-4 data in Guide 9.0; Method= S; Cat= TA]
2012 Aug. 05.11 UT: m1=13.0 ccd, Dia.=0.8’; Measures taken on CCD images; Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Aug. 04.94 UT: m1=10.8 (S), Dia.=2.5′, DC=2; 22cm L (120x); Marco Goiato (Araçatuba, Brasil)
2012 Aug. 04.37 UT: m1=12.2, Dia.=1.7’, DC=4/5; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, small but almost stellar central condensation, appears stellar at times using averted vision in periods of good seeing. Comparison stars checked using TASS-4 data in Guide 9.0; Method= M; Cat= TA]
2012 Jul. 23.89 UT: m1=11.8, Dia.=1.5′, DC=3; 20.3cm L f:6 (63x); Piotr Guzik (Szklary, Poland) [Method=M; Cat=TK]
2012 Jul. 23.01 UT: m1=10.8, Dia.=5′, DC=2/; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2012 Jul. 22.95 UT: m1=11.7, Dia.=2′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Jul. 20.94 UT: m1=11.0 (S), Dia.=2′, DC=2; 22cm L (120x); Marco Goiato (Araçatuba, Brasil)
2012 Jul. 20.93 UT: m1=12.2, Dia.=1′.6, DC=5/; 35cm reflector (73x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 20.10 UT: m1=12.7 ccd, Dia.=0.8’, tail:0.5′ PA:323°; Measures taken on CCD images; Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Jul. 19.93 UT: m1=12.2, Dia.=1′.5, DC=5; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 18.92 UT: m1=12.1, Dia.=1′.5, DC=6; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 17.93 UT: m1=12.3, Dia.=1′.6, DC=6; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.99 UT: m1=11.1, Dia.=5′, DC=3/; 20cm SCT (77x); Juan José González (Pandorado, 1190 m alt., León, España)
2012 Jul. 16.89 UT: m1=12.7, Dia.=0.7′, DC=2; 25.4cm reflector (120x); V. Ivanov (Melovoe, Russia) [Low condensed coma. Comet is visible only with averted vision. Not wind, t+24°C. LM=6.6m]
2012 Jul. 16.36 UT: m1=11.9, Dia.=1.5’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma has broad, even brightness with faint edges, averted vision. Extinction corrected, Comparison stars checked using TASS-4 data in Guide 9.0; Method= S; Cat= TA]
2012 Jul. 15.89 UT: m1=12.5, Dia.=1.0′, DC=3; 20.3cm reflector (120x); V. Ivanov (Atamanovka, near Saratov, Russia) [Low condensed coma, Comet is visible only with averted vision. Not wind, t+20°C. LM=6.0m]
2012 Jul. 15.88 UT: m1=12.3, Dia.=1′.5, DC=6; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 15.36 UT: m1=12.3, Dia.=1.2’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, averted vision, slight haze in the atmosphere at the time of obs. Extinction corrected, Comparison stars checked using TASS-4 data in Guide 9.0; Method= S; Cat= TA]
2012 Jul. 13.00 UT: m1=11.2, Dia.=4.5′, DC=3/; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España)
2012 Jul. 07.58 UT: m1=12.2, Dia.=1.1′, DC=2; 20cm f/5 reflector (119x); Man-To Hui (Luogang, Canton, China) [light pollution]
2012 Jul. 05.94 UT: m1=11.1 (S), Dia.=2′, DC=2; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 Jun. 24.45 UT: m1=11.2, Dia.=1.2’, DC=2; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, averted vision. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 23.40 UT: m1=12.5, Dia.=1.3’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse, slightly brighter central condensation than the edges, averted vision, slight moonlight interference. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 22.94 UT: m1=12.8, Dia.=1′, DC=2, Tail:0.03 degree in PA:120 degrees; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Jun. 19.42 UT: m1=11.5, Dia.=1.4’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, observation made difficult due to nearby bright star, best visible in periods of good seeing using averted vision. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 18.37 UT: m1=11.5, Dia.=1.2’ DC=1; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, averted vision. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 16.94 UT: m1=11.3, Dia.=3′, DC=2, no cola; 23.5cm SCT (94x); Carlos Labordena (Castellón, España)
2012 Jun. 15.39 UT: m1=11.4, Dia.=1’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and diffuse, no tail. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 14.37 UT: m1=11.5, Dia.=0.8’, DC=3; 25cm L f:5 (83x); [Chris Wyatt (Walcha, NSW, Australia) [Comet low on Northern horizon, averted vision, difficult, visible in periods of good seeing. Extinction applied, comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2012 Jun. 14.05 UT: m1=10.7, Dia.=6′, DC=2/; 20cm SCT (77x); Juan José González (Alto del Castro, 1720 m alt., León, España) [amplia y difusa coma]
2012 May. 19.98 UT: m1=12.6, Dia.=1.2′, DC=4; 20.3cm L f:6 (100x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Comparison stars taken from APASS V-band photometry (AQ). Faintest star 14.1 mag (HS) in FOV at 100x]
2012 May. 17.91 UT: m1=12.3 , Dia.=1′, DC=6; Tail: 0.03 deg. in PA: 270 deg.; 32cm reflector (96x); Uwe Pilz (Leipzig, Germany)
2012 May. 14.98 UT: m1=11.1, Dia.=5′, DC=3; 20cm SCT (77x); Juan José González (Pandorado, 1190 m alt., León, España) [Observación realizada desde localidad de montaña, más elevada que en mi estimación previa del 9 de Mayo, obteniendo en esta ocasión un mayor diámetro de coma y una m1 algo más brillante. Varias estrellas en la coma, teniendo la más brillante mag. 13.6 (GSC)]
2012 May. 13.97 UT: m1=12.8, Dia.=1.2′, DC=6; 20.3cm L f:6 (100x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Comparison stars taken from APASS V-band photometry (AQ). VLmag=6.5 and the faintest star 14.6 mag (AQ) seen in FOV at 100x]
2012 May. 10.91 UT: m1=12.8, Dia.=0.8′, DC=5; 25.4cm S f:4 (127x); Mieczyslaw Leszek Paradowski (Lublin, Poland) [Comparison stars taken from APASS V-band photometry (AQ). VLmag=5 and faintest star 13.9 mag (AQ) seen in FOV at 127x]
2012 May. 09.96 UT: m1=11.5, Dia.=2.5′, DC=3/; 20cm SCT (77x); Juan José González (El Fito – Sierra del Sueve, 570 m alt., Asturias, España) [Observación realizada desde una ubicación a más baja altitud que en mi estimación previa del 8 de Abril, obteniendo en esta ocasión un menor diámetro de coma y una m1 algo más débil]
2012 Apr. 24.85 UT: m1=13.3, Dia.=1.0′, DC=5; 25.4cm reflector (120x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Abr. 21.90 UT: m1=11.6, Dia.=4′, DC=3, no cola; 23.5cm SCT (138x); Carlos Labordena (Castellón, España)
2012 Apr. 21.68 UT: m1=13.7, Dia.=1.1′, DC=6; 21.0cm Cassegrain; M.-T. Hui (Mt. Mulan, Wuhan, China)
2012 Abr. 08.87 UT: m1=11.2, Dia.=6′, DC=2/; 20cm SCT (77x); Juan José González (Pandorado, alt. 1190 m., León, España) [Desde cielos oscuros de montaña la coma se muestra amplia y difusa, con débil región externa. Varias estrellas en la coma, la más brillante de mag. 13.7 (GSC)]
2012 Mar. 28.11 UT: m1=11.7, Dia.=2.5′, DC=4; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2012 Mar. 15.06 UT: m1=11.5, Dia.=3′, DC=3; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Significativamente más brillante que lo esperado. Estrellas de campo comprobadas en el DSS. Cielo muy claro de montaña]
2012 Ene. 03.17 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 tomadas de la fotometría Henden del sector HS550. Cielo muy claro de montaña]

C/2011 A3 (Gibbs)
2012 Nov. 04.11 UT: m1=17.0 ccd, Dia.=0.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 02.05 UT: m1=17.0 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 19.13 UT: m1=15.7 ccd, Dia.=0′.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 15.14 UT: m1=15.7 ccd, Dia.=0′.5′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 07.13 UT: m1=15.4 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 14.11 UT: m1=15.2 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 13.15 UT: m1=15.3 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 11.11 UT: m1=15.5 ccd, Dia.=0.6′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 09.89 UT: m1=[14.5; 50.8cm L (241x); Sandor Szabo (Sopron, Hungary) [Very low on the sothern horizon. Fainter than 14.5 mag.]
2012 Aug. 20.03 UT: m1=14.5 ccd, Dia.=0.8′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 18.13 UT: m1=14.5 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 15.10 UT: m1=14.4 ccd, Dia.=1.0′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 14.16 UT: m1=14.9 ccd, Dia.=0.7′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Jul. 30.40 UT: m1=14.6 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Jul. 29.41 UT: m1=14.6 ccd, Dia.=0.8′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]

C/2010 S1 (LINEAR)
2012 Jan. 06.08 UT: m1=13.9 V ccd, Dia.=0.6′, Tail=0.7′ in PA 54 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2012 Dec. 16.71 UT: m1=[13.0; 20cm L (222x); Artyom Novichonok (Konchezero, Russia)
2012 Nov. 13.73 UT: m1=12.8, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Nov. 06.94 UT: m1=13.0, Dia.=0.7′, DC=5; 20cm SCT (160x); Juan José González (Pandorado, alt. 1190 m, León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden de Z Umi. Cielo muy claro de montaña]
2012 Sep. 15.00 UT: m1=13.5, Dia.=0.8′, DC=5; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sept. 14.01 UT: m1= 13.5 : DC = 4; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 13.90 UT: m1=13.5, Dia.=1′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Sep. 13.84 UT: m1=13.3, Dia.=0.9′, DC=7; 35cm reflector (107x); Jakub Cerny (Senohraby, Czech Republic)
2012 Sep. 12.98 UT: m1=13.4, Dia.=0.7′, DC=5/; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 11.79 UT: m1=13.7, Dia.=0.7′, DC=5; 35.6cm L (133x); Artyom Novichonok (Shadzhatmaz, Caucasus, Russia) [Small and faint]
2012 Sep. 09.86 UT: m1=13.2, Dia.=0.5′, DC=6; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary) [With 312x the western part of the coma is brighter.]
2012 Sep. 08.84 UT: m1=13.2, Dia.=1.2′, DC=7; 35cm reflector (64x); Jakub Cerny (Senohraby, Czech Republic)
2012 Ago. 21.96 UT: m1=13.0, 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 APASS cercana al cometa]
2012 Aug. 19.68 UT: m1=13.8, Dia.=0.8′, DC=6; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Aug. 18.86 UT: m1=12.6, Dia.=0.5′; 32cm reflector; Uwe Pilz (Leipzig, Germany)
2012 Jul. 26.89 UT: m1=13.8, Dia.=0.5′, DC=2; 32cm L f:5 (144x); Uwe Pilz (Leipzig, Germany)
2012 Jul. 21.00 UT: m1=13.1, Dia.=0′.7, DC=6; 35cm reflector (219x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 19.95 UT: m1=13.3, Dia.=0′.8, DC=5; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 July 19.11 UT: m1=13.5, DC=4; Visual Aperture 36″ F/3.5; Jean-François Viens (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Jul. 16.97 UT: m1=13.0, Dia.=0′.7, DC=7/; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.94 UT: m1=13.2, Dia.=0.8′, DC=6; 20cm SCT (206x); Juan José González (Pandorado, 1190 m alt., León, España)[Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría APASS cercana al cometa]

C/2010 G2 (Hill)
2012 Oct. 23.19 UT: m1=18.5 ccd, Dia.=0.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 22.23 UT: m1=18.3 ccd, Dia.=0.2′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 16.33 UT: m1=18.5 ccd, Dia.=0.2′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 14.27 UT: m1=18.5 ccd, Dia.=0.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 13.35 UT: m1=18.5 ccd, Dia.=0.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 16.37 UT: m1=17.5 ccd, Dia.=0.49′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Feb. 20.82 UT: m1=10.2, Dia.=5′, DC=2; 20cm SCT (77x); Juan José González (Collada de la Cobertoria, alt. 1175 m., Asturias, España) [Coma elongada]
2012 Feb. 18.80 UT: m1=10.8, Dia.=1.5′, DC=3, no cola; 23.5cm SCT(94x); Carlos Labordena (Castellón, España)
2012 Ene. 21.80 UT: m1=10.4, Dia.=4′, DC=3, no cola; 20cm SCT(80x); Carlos Labordena (Castellón, España)
2012 Jan. 20.979 UT: m1=10.8, Dia.=3′, DC=2; 22cm L f:6.5 (120x); Marco Goiato (Araçatuba, Brasil)
2012 Ene. 10.77 UT: m1=9.8, Dia.=5′, DC=5; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m., Leon, España) [El cometa muestra una coma interna más brillante ( diámetro: 0.8′ ) en evolución después del outburst detectado hace una semana en imágenes CCD. Condensación central casi estelar de m2=13.7, con estrellas de comparación de la fotometría Henden cerca de Omi Cet. Estrellas de campo comprobadas en el DSS. Crepúsculo astronómico. Cielo muy claro de montaña]
2012 Ene. 08.74 UT: m1=10.7, Dia.=7′, DC=2, no cola; 23.5cm SCT(137x); Carlos Labordena (Castellón, España)
2012 Jan. 08.55 UT: m1=11.8, Dia.=2.3′, DC=6; 20cm L; M.-T. Hui (Canton, China) [good transparency but thin clouds; strong moonlight]
2012 Jan. 05.10 UT: m1=10,2, Dia.=2’, DC=1, Cola: no visible; 25cm SC-T (62x); Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]

C/2009 P1 (Garradd)
2012 Dec. 13.18 UT: m1=14.0, Dia.=0.5′, DC=2; 40cm L (250x); Sandor Szabo (Sopron, Hungary) [Only 5’ from gamma Sextantis, but can be seen with averted vision]
2012 Nov. 24.78 UT: m1=13.0, Dia.=1.4′, DC=3; 40.0cm L f/4.5 (144x); Seiichi Yoshida (Gunma, Japan)
2012 Nov. 19.30 UT: m1=14.9 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Jun. 23.37 UT: m1=10.2, Dia.=3.2’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, moonlight affected, outer coma visible using averted vision, central condensation slightly brighter but appears like a small broad circular smudge of light. Extinction corrected, Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 19.35 UT: m1=10.3, Dia.=4.5’, DC=2/3; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma edges diffuse, gradually brightens to a diffusely formed central condensation around 1’ diameter, zodiacal light interference. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 18.35 UT: m1=10.3, Dia.=4’, DC=4; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, averted vision to determine coma dia, small diffuse central condensation using direct vision. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 16.89 UT: m1=10.6, Dia.=5′, DC=3, Cola=10′; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2012 Jun. 15.36 UT: m1=9.9, Dia.=3.5’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse. Extinction corrected, comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 14.35 UT: m1=10.5, Dia.=4’, DC=2; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail, close to bright star, slight interference by zodiacal light, small diffuse central condensation, slightly brighter than the edges of the coma, visible with direct vision but better to see using averted vision. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2012 Jun. 13.94 UT: m1=10.2, Dia.=5′, DC=3/; 20cm SCT (77x); Juan Jose Gonzalez (Alto del Castro, 1720 m alt., León, España) [Cola de polvo de 0.2º en AP 30º]
2012 May. 27.14 UT: m1=10.0, Dia.=3´, DC=3, Tail: not visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 May. 21.90 UT: m1=9.5:, Dia.=2′, DC=1; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 May. 19.90 UT: m1=9.3, Dia.=4′, DC=3; 20.3cm L f:6 (48x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)
2012 May. 18.937 UT: m1=9.1, Dia.=6′, DC=3; 22cm L f:6.5 (60x); Marco Goiato (Araçatuba, Brasil)
2012 May. 17.89 UT: m1=10.2, Dia.=2′, DC=4, Tail: 0.05 deg. in PA: 56 and 153 deg.; 32cm reflector (96x); Uwe Pilz (Leipzig, Germany)
2012 May. 15.90 UT: m1=9.5, Dia.=2′, DC=1; 18cm L (57x); Alexandre Amorim (Florianopolis, Brazil)
2012 May. 14.97 UT: m1=8.2, Dia.=6′, DC=4; 25×100 B; Juan José González (Pandorado, 1190 m alt., León, España) [Varias estrellas en la coma, teniendo la más brillante mag. 10.1 (TK)]
2012 May. 14.43 UT: m1=8.7, Dia.=4′; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) Observed at low elevation.
2012 May. 13.89 UT: m1=9.4, Dia.=6′, DC=3; 20.3cm L f:6 (48x); Mieczyslaw Leszek Paradowski (Dabrowa, Poland)
2012 May. 11.16 UT: m1=9.0, Dia.=4´, DC=3, Cola: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 May. 09.95 UT: m1=8.2, Dia.=6′, DC=5; 25×100 B; Juan José González (El Fito – Sierra del Sueve, 570 m alt., Asturias, España)
2012 May. 09.937 UT: m1=9.2, Dia.=4′, DC=3; 22cm L f:6.5 (60x); Marco Goiato (Araçatuba, Brasil)
2012 May. 08.88 UT: m1=8.7, Dia.=3′; 8cm refractor ; Uwe Pilz (Leipzig, Germany)
2012 Abr. 24.937 UT: m1=8.3, Dia.=6′, DC=3/; 20X100 B; Marco Goiato (Araçatuba, Brasil)
2012 Apr. 24.88 UT: m1=8.5, Dia.=5′, DC=5; 25.4cm reflector (60x); Vyacheslav Ivanov (Melovoe, Russia)
2012 Abr. 22.937 UT: m1=8.2, Dia.=7′, DC=3/; 20X100 B; Marco Goiato (Araçatuba, Brasil)
2012 Apr. 22.13 UT: m1=8.0, Dia=8´, DC=4, Colal: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Abr. 21.87 UT: m1=8.1, Dia.=7′, DC=5, Cola= 20′; 23.5cm SCT (67x); Carlos Labordena (Castellón, España)
2012 Abr. 21.86 UT: m1=7.9, Dia.=6′, DC=4, no cola; 11×80 B; Carlos Labordena (Castellón, España)
2012 Apr. 21.63 UT: m1=7.7, Dia.=9′, DC=5; 10×50 B; M.-T. Hui (Mt. Mulan, Wuhan, China)
2012 Abr. 18.948 UT: m1=8.2, Dia.=5′, DC=4; 22cm L f:6.5 (60x); Marco Goiato (Araçatuba, Brasil) [Altitude do cometa: 24º]
2012 Abr. 18.937 UT: m1=8.0, Dia.=7′, DC=3/; 20X100 B; Marco Goiato (Araçatuba, Brasil) [Altitude do cometa: 24º]
2012 Abr. 16.033 UT: m1=7.7:; 20×50 B; Luis Mansilla (Rosario, Argentina) [brumoso, altura 8 grados]
2012 Abr. 14.12 UT: m1=7.5, Dia.=8´, DC=4, Cola: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Abr. 13.948 UT: m1=7.9, Dia.=6′, DC=4; 20X100 B; Marco Goiato (Araçatuba, Brasil) [Altitude do cometa: 20º]
2012 Abr. 13.937 UT: m1=7.6:, Dia.=8′, DC=3; 7X50 B; Marco Goiato (Araçatuba, Brasil) [Altitude do cometa: 20º]
2012 Apr. 13.38 UT: m1=7.6, Dia.=4′; 25×100 B; David A. J. Seargent (Cowra, NSW, Australia) [Observed at low elevation]
2012 Apr. 10.84 UT: m1=7.6, Dia.=7′, DC=4; 6.8cm R f:5.8 (23); Mieczyslaw Leszek Paradowski (Lublin, Poland)
2012 Apr. 09.83 UT: m1=7.6, Dia.=7′, DC=4; 6.8cm R f:5.8 (23x); Mieczyslaw Leszek Paradowski (Lublin, Poland)
2012 Abr. 08.86 UT: m1=7.4, Dia.=12′, DC=5; 10×50 B; Juan José González (Pandorado, alt. 1190 m., León, España) [Cola de polvo de 0.5º en AP 30º]
2012 Mar. 30.15 UT: m1=7.0, Dia.=10´, DC=4, Cola: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico).
2012 Mar. 28.10 UT: m1=7.1, Dia.=12′, DC=5; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)[Cola de polvo de 0.7º en AP 40º]
2012 Mar. 24.83 UT: m1=7.4, Dia.=10′, DC=4; 7×50 B; Mieczyslaw Leszek Paradowski (Lublin, Poland)
2012 Mar. 24.83 UT: m1=7.1, Dia.=7.3′, DC=5, dust tail: 0.5 deg. in P.A. 40 deg., ion tail: 0.4 deg. in P.A. 126 deg.; 10.2cm Maksutov reflector; M.-T. Hui (Mt. Mulan, Wuhan, China) [several stars inside the coma]
2012 Mar. 15.08 UT: m1=6.9, Dia.=13′, DC=6; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Cola de polvo de 0.5º en AP 50º. Débil cola iónica]
2012 Mar. 13.65 UT: m1=7.2, Dia.=18.0′±0.9′, DC=5; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Mar. 11.86 UT: m1=6.8, Dia.=14′, DC=6; 10×50 B; Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Cola de polvo de 0.4º en AP 80º. La cola iónica se muestra más débil que en mi observación previa de Mar. 1.04]
2012 Mar. 05.89 UT: m1=6.9, Dia.=14.7′±1.2′, DC=5; 7×50 B; Artyon Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Mar. 04.16 UT: m1=6.3, Dia.=8′, DC=7, no cola; a Simple Vista.; Carlos Labordena (Castellón, España)
2012 Mar. 04.15 UT: m1=6.5, Dia.=9′, DC=5, Cola=60′; 11×80 B; Carlos Labordena (Castellón, España)
2012 Mar. 01.77 UT: m1=6.7, Dia.=14.1′±0.4′, DC=5; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Mar. 01.25 TU m1=6.6, Dia.=4′, DC=5; 19cm R f/13.9 (65x); Isbel González González (Guayos, Sancti Spíritus, Cuba) [Método Beyer; Estrellas ref.: TYC 4187-894-1 (8.20) y TYC 4187-319-1 (9.24); Polución lumínica: sí; Altura sobre el horizonte: 30 grados; MALE instrumental: 12,5]
2012 Mar. 01.20 UT: m1=6.5, Dia.=10′, DC=3; 10×50 B; José J. Chambó (Vallés, Valencia, España) [Cat=Tycho2, Met=Sidgwick, VLMag=4,7]
2012 Mar. 01.05 UT: m1=6.2, Dia.=10′, DC=7; a simple vista; Juan José González (Puerto de Aralla, alt. 1530 m., León, España) [En 10x50B: Cola iónica de 1.3º en AP 260º y cola de polvo de 0.5º en AP 110º. Observación realizada bajo mejores condiciones, y desde mayor altitud, que en la previa de Feb. 20.93]
2012 Feb. 29.87 UT: m1=6.9, Dia.=15.5′±0.4′, DC=4; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Feb. 28.82 UT: m1=6.7, Dia.=17.4′±0.8′, DC=4; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Feb. 27.81 UT: m1=7.0, Dia.=15.5′±1.2′, DC=4; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Feb. 24.46 UT: m1=6.8, Dia.=15’, DC=4; 10×50 B; Jorge Solano (San José Pinula, Guatemala)
2012 Feb. 22.81 UT: m1=7.0:, Dia.=14.0′±0.4′, DC=4; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Feb. 20.93 UT: m1=7.0, Dia.=10′, DC=5, Tails 0.2 deg to PA 100 and 0.25 deg to PA 300; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Feb. 20.93 UT: m1=6.6, Dia.=12′, DC=6, Cola: 1.4º en AP 280º; 10×50 B; Juan José González (Alto del Trichero, alt. 1190 m., León, España) [Cola iónica de 1.4º en AP 280º y cola de polvo de 0.4º en AP 110º]
2012 Feb. 19.97 UT: m1=7.0, Dia.=10′, DC=5, Tails 0.25 deg to PA 100 and 0.3 deg to PA 300; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Feb. 19.84 UT: m1=6.8, Dia.=14′, DC=4/; 7×50 B; Artyom Novichonok (Nam Cat Tien National Park, Vietnam)
2012 Feb. 19.45 UT: m1=6.5, Dia.=7′, DC=6/, Cola: no visible; 15cm SCT (37x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Feb. 19.24 UT: m1=6.7, Dia.=8′, DC=5, Cola=35′; 15cm T(30x); Carlos Labordena (Castellón, España)
2012 Feb. 19.22 UT: m1=6.5, Dia.=8′, DC=3; 10×50 B; José J. Chambó (Vallés, Valencia, España) [Cat=Tycho2, Met=Sidgwick, Mag”2=19,1 VLMag=4,8]
2012 Feb. 18.76 UT: m1=7.2, Dia.=5′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Feb. 17.24 UT: m1=6.7, Dia.=9′, DC=5, Cola=35′; 20cm SCT(50x); Carlos Labordena (Castellón, España)
2012 Feb. 17.14 UT: m1=6.5, Dia.=8′, DC=4, Cola=20′; 11×80 B; Carlos Labordena (Castellón, España)
2012 Ene. 30.22 UT: m1=6.7, Dia.=7′, DC=4, Cola=15′; 11×80 B; Carlos Labordena (Castellón, España)
2012 Ene. 30.22 UT: m1=6.9, Dia.=8′, DC=6, Cola= 30′; 20cm T20 (50x); Carlos Labordena (Castellón, España)
2012 Feb. 14.42 UT: m1=6.5, Dia.=6′, DC=7, Tail: no visible; 25cm Reflector (48x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Feb. 04.08 UT: m1=7.2, Dia.=6′, DC=4; 11 cm reflector (32x); Vyacheslav Ivanove (Saratov, Russia)
2012 Feb. 03.24 UT: m1=7.1, Dia.=7′, DC=4; 20×60 B; José J. Chambó (Vallés, Valencia, España) [Cat=Tycho2, Met=Sidgwick, Mag”2=18,8 VLMag=4,6]
2012 Feb. 03.07 UT: m1=7.3, Dia.=5′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 31.01 UT: m1=7.3, Dia.=6′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 30.87 UT: m1=7.1, Dia.=15′, DC=6; 7×50 binoculars; Artyom Novichonok (Nam Cat Tien national park, Vietnam)
2012 Jan. 30.03 UT: m1=7.5:, Dia.=6′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 29.89 UT: m1=7.0, Dia.=16′, DC=6; 7×50 binoculars; Artyom Novichonok (Nam Cat Tien national park, Vietnam)
2012 Jan. 29.06 UT: m1=7.5:, Dia.=5′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 27.88 UT: m1=7.2, Dia.=13′, DC=6; 7×50 binoculars; Artyom Novichonok (Nam Cat Tien national park, Vietnam)
2012 Jan. 27.03 UT: m1=7.6, Dia.=6′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 26.01 UT: m1=7.3, Dia.=6′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 25.88 UT: m1=7.4, Dia.=12′, DC=6; 7×50 binoculars; Artyom Novichonok (Nam Cat Tien national park, Vietnam)
2012 Jan. 25.03 UT: m1=7.5, Dia.=4′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 24.05 UT: m1=7.5, Dia.=4′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 23.04 UT: m1=7.2, Dia.=6′, DC=5; 11 cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 22.05 UT: m1=7.5, Dia.=5′, DC=6; 11cm reflector (32x); Vyacheslav Ivanov (Saratov, Russia)
2012 Jan. 21.95 UT: m1=7.5, Dia.=12′, DC=5; 7×50 binoculars; Artyom Novichonok (Nam Cat Tien national park, Vietnam)
2012 Ene. 08.25 UT: m1=6.8, Dia.=7′, DC=5, Cola=15′; 11×80 B; Carlos Labordena (Castellón, España)
2012 Ene. 08.24 UT: m1=7.0, Dia.=8′, DC=6, Cola= 20′; 20cm SCT (50x); Carlos Labordena (Castellón, España)

C/2009 F4 (McNaught)
2012 Nov. 15.32 UT: m1=14.0 ccd, Dia.=1.2′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Nov. 05.18 UT: m1=14.0 ccd, Dia.=1.3′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 19.32 UT: m1=13.3 ccd, Dia.=0.8′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Oct. 18.36 UT: m1=13.2 ccd, Dia.=1.2′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 22.29 UT: m1=13.1 ccd, Dia.=1.0′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 20.29 UT: m1=13.0 ccd, Dia.=1.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 16.30 UT: m1=13.1 ccd, Dia.=1.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 15.29 UT: m1=13.7 ccd, Dia.=1.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 14.29 UT: m1=13.2 ccd, Dia.=1.1′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Sep. 11.33 UT: m1=13.4 ccd, Dia.=1.0′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 16.36 UT: m1=13.0 ccd, Dia.=1.0′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 15.34 UT: m1=13.5 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Jul. 28.40 UT: m1=13.3 ccd, Dia.=0′.7; 30.5cm schmidt-cassegrain + CCD; Jakub Cerny (Czech Republic) [remotly FRAM Malargue, Argentina]
2012 Jul. 27.40 UT: m1=13.1 ccd, Dia.=0′.9; 30.5cm schmidt-cassegrain + CCD; Jakub Cerny (Czech Republic) [remotly FRAM Malargue, Argentina]
2012 Jun. 15.76 UT: m1=13.9, Dia.=0.6’, DC=3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail, visible using averted vision in periods of good seeing. Extinction corrected, Comparison stars checked using ASAS-3 data; Method= S; Cat= AU]
2012 Mar. 18.99 UT: m1=12.7 ccd, Dia.=1′; 25cm STC + CCD; Fernando P. Tifner (Rosario, Argentina)
2012 Mar. 17.98 UT: m1=12.6 ccd, Dia.=1′; 25cm STC + CCD; Fernando P. Tifner (Rosario, Argentina)

C/2008 FK75 (Lemmon-Siding Spring)
2012 Nov. 11.93 UT: m1=17.7 ccd, Dia.=0.3’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 24.05 UT: m1=18.4 ccd, Dia.=0.1’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 13.06 UT: m1=17.1 ccd, Dia.=0.2’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Oct. 09.06 UT: m1=17.7 ccd, Dia.=0.2’; Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)

C/2006 S3 (LONEOS)
2012 Sept. 20.43 UT: m1=14.9 ccd, Dia=0.8’; Measures taken on CCD images); Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sept. 20.34 UT: m1=16.6 ccd, Dia=0.6’; Measures taken on CCD images); Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Sep. 14.40 UT: m1=12.9, Dia.=1.6’, DC=2/3; 25cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Difficult due to zodiacal light, slight smoke haze interference, no tail, coma visible using averted vision. Comparison stars checked using APASS data in Guide 9.0; Method=S; Cat=AQ]
2012 Sep. 13.84 UT: m1=11.0, Dia.=3′, DC=1/; 20cm SCT (100x); Juan Jose Gonzalez (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 12º. Cielo muy claro de montaña]
2012 Sep. 09.80 UT: m1=12.3, Dia.=1.5′, DC=1; 50.8cm L (189x); Sandor Szabo (Sopron, Hungary) [Very big and diffuse coma]
2012 Sep. 03.04 UT: m1=12.8 ccd, Dia.=0.9′; 30.5cm schmidt-cassegrain; Jakub Cerny [robotic telescope FRAM in Malargue, Argentina]
2012 Ago. 21.89 UT: m1=10.7, Dia.=4′, DC=2; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2012 Aug. 18.09 UT: m1=12.5, Dia.=1.3′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Ago. 17.90 UT: m1=11.7, Dia.=3′, DC=2, no cola; 23.5cm SCT(94x); Carlos Labordena (Castellón, España)
2012 Aug. 12.14 UT: m1=[10.8; 15cm SCT (62x); Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Ago. 09.93 UT: m1=10.5, Dia.=4′, DC=2/; 20cm SCT (100x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2012 Aug. 09.17 UT: m1=12.6 ccd, Dia.=0.8′; 30.5cm schmidt-cassegrain; Jakub Cerny (Czech Republic) [robotic telescope FRAM in Malargue, Argentina]
2012 Aug. 06.40 UT: m1=13.0, Dia.=1.3’, DC=4/5; 25cm L, f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Close to bright star. Comparison stars checked using ASAS-3 data online; Method= S; Cat= AU]
2012 July 23.12 UT: m1=12.8 ccd, Dia= 0.6’; Measures taken on CCD images; Pierre Laporte (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada)
2012 Jul. 22.93 UT: m1=10.5, Dia.=5.5′, DC=2; 20cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Mejores condiciones atmosféricas de observación permitieron realizar una estimación más brillante que la obtenida hace seis días: amplia coma con débil región exterior]
2012 Jul. 20.92 UT: m1=13.2, Dia.=1′.8, DC=5; 35cm reflector (109x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 19.90 UT: m1=13.2, Dia.=1′.9, DC=3; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 16.97 UT: m1=11.4, Dia.=3.0′, DC=3/; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España)[Coma elongada]
2012 Jul. 16.90 UT: m1=12.9, Dia.=2′.0, DC=4; 35cm reflector (117x); Jakub Cerny (Korcula Island, Croatia)
2012 Jul. 12.95 UT: m1=11.5, Dia.=3.0′, DC=4; 20cm SCT (100x); Juan José González (Pandorado, 1190 m alt., León, España) [Coma elongada, más amplia y con más brillante m1, respecto a mi estimación previa de Junio 14.00]
2012 Jul. 11.10 UT: m1=12.6 ccd, Dia.=1′.0; 30.5cm schmidt-cassegrain; Jakub Cerny (Senohraby, Czech Republic)
2012 Jul. 10.02 UT: m1=12.8 ccd, Dia.=0′.9; 30.5cm schmidt-cassegrain; Jakub Cerny (Senohraby, Czech Republic)
2012 Jun. 16.96 UT: m1=12.2, Dia.=0.8′, DC=3, no cola; 23.5cm SCT (138x); Carlos Labordena (Castellón, España)
2012 Jun. 14.00 UT: m1=12.1, Dia.=0.9′, DC=5; 20cm SCT (133x); Juan José González (Alto del Castro, 1720 m alt., León, España)
2012 May. 29.21 UT: m1=11.9 (S), Dia.=1.7′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 May. 19.16 UT: m1=12.0 (S), Dia.=2′, DC=4; 22cm L (160x); Marco Goiato (Araçatuba, Brasil)
2012 May. 15.00 UT: m1=13.1, Dia.=0.7′, DC=5; 20cm SCT (133x); Juan José González (Pandorado, 1190 m alt., León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden de HP Lib]
2012 Abr. 16.229 UT: m1=11.9, Dia.=1.5′, DC=4; 22cm L f:6.5 (160x); Marco Goiato (Araçatuba, Brasil)

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