C/2012 F6 (Lemmon)

C/2012 F6 (Lemmon)
2014 Mar. 30.43 UT: m1=15.9 CCD, Dia.=0.56′... 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2014 Mar. 04.47 UT: m1=16.1: CCD, Dia.=&0.5′... 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Dec. 30.08 UT: m1=14.2: CCD, Dia.=1.2′ Tail= 1.5′ in PA: 128 deg ... [T14]0.11-m f/5.0 refractor + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.) [brightness uncertainty due to several stars in coma]
2013 Nov. 27.77 UT: m1=14.0, Dia.=1.0′, DC=3... 50.8-cm L (307x)... Sandor Szabo (Sopron, Hungary)
2013 Nov. 08.13 UT: m1=13.9, Dia.=0.5′, DC=2... 40-cm L (302x)... Timo Karhula (Åkesta Observatory, Västerås, Sweden)
2013 Nov. 04.99 UT: m1=14.6 CCD, Dia.=0.4’... CCD images unfiltered... Pierre Laporte (Cd’OA des Monts Notre-Dame, Québec, Canada)
2013 Oct. 31.80 UT: m1=13.6, Dia.=0.8′, DC=1... 50.8 -cm refl. (123x)... Sandor Szabo (Csapod, Hungary)
2013 Oct. 30.83 UT: m1=11.9, Dia.=2.3′, DC=2... 35-cm L (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 30.76 UT: m1=12.8, Dia.=1′, DC=3... 32-cm L f/5 (120x)... Uwe Pilz (Leipzig, Germany)
2013 Oct. 26.75 UT: m1=13.9, Dia.=0.7′, DC=3... 40.0 -cm refl. (250x)... Sandor Szabo (Sopron, Hungary)
2013 Oct. 13.41 UT: m1=11.7, Dia.=1.2′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2013 Oct. 12.41 UT: m1=11.6, Dia.=1.4′, DC=3/... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2013 Oct. 11.43 UT: m1=11.7, Dia.=1.4′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2013 Oct. 06.96 UT: m1=11.3, Dia.=2′, DC=3/... 20-cm SCT (133x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Oct. 05.89 UT: m1=11.2, Dia.=3′, DC=3, no tail... 23.5-cm SCT(67x)... Carlos Labordena (Castellón, España)
2013 Oct. 04.813 UT: m1=12.0, Dia.=2′, DC=0... 40-cm L (120x)... Gabor Santa (Polaris Observatory, Budapest, Hungary) [suburban sky]
2013 Oct. 03.97 UT: m1=12.2, Dia.=3.0′, DC=5... 50.8-cm refl. (123x)... Sandor Szabo (Hungary) [Tail is 10’ long to PA125deg.]
2013 Oct. 03.83 UT: m1=11.8, Dia.=2.7′, DC=4... 35-cm L (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.81 UT: m1=12.0, Dia.=2.3′, DC=3/, Tail= 0.1 deg in PA: 110 deg ... 35-cm L (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Oct. 01.11 UT: m1=[11.5 NEGATIVA... 15-cm SCT (75x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Sep. 29.81 UT: m1=11.9, Dia.=2.2′, DC=4/, Tail= 0.1 deg in PA: 105 deg ... 35-cm L (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 06.13 UT: m1=9.0 CCD... CCD images unfiltered... Pierre Laporte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 4428 1132 mag.=9.373]
2013 Sep. 14.30 UT: m1=12.1, Dia.=3.3′, DC=3/... 45.7-cm L f/4.2 (112x)... Todd Augustyniak (Green River State Wildlife Area, Harmon, Illinois, USA) [Faint 4′ tail visible with PA 146 degrees]
2013 Sep. 13.04 UT: m1=10.7, Dia.=4′, DC=3/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Sep. 08.02 UT: m1=11.7, Dia.=2.0′, DC=4... 42-cm L f:5 (66x)... Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 07.13 UT: m1=11.7, Dia.=1.6′, DC=4... 30.5-cm L f/4.9 (115x)... Todd Augustyniak (Afton Forest Preserve, Dekalb, Illinois USA)
2013 Sep. 06.93 UT: m1=11.6, Dia.=2.2′, DC=4... 42-cm L f:5 (66x)... Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.90 UT: m1=10.9, Dia.=3.2′, DC=5, Tail= 0.25 deg in PA: 140 deg ... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 05.93 UT: m1=11.8, Dia.=1.5′, DC=4... 42-cm L f:5 (66x)... Martin Lehky (Hradec Kralove, Czech Republic)
2013 Sep. 06.86 UT: m1=10.8, Dia.=4.5′, DC=5... 50.8-cm L (78x)... Sandor Szabo (Hungary) [Wide tail is seen 5’ long]
2013 Sep. 04.88 UT: m1=11.5, Dia.=4.0′, DC=5, Tail= 0.25 deg in PA: 140 deg ... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Sep. 04.83 UT: m1=11.8, Dia.=1′, DC=3... 32-cm L f/5 (72x)... Uwe Pilz (Leipzig, Germany)
2013 Sep. 02.89 UT: m1=11.2, Dia.=3.4′, DC=4/... 20-cm L (80x)... Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Sep. 02.88 UT: m1=11.3, Dia.=3.9′, DC=4/... 20-cm L (80x)... Artyom Novichonok (TAU station, Northern Caucasus, Russia)
2013 Sep. 01.15 UT: m1=10.3, Dia.=4′, DC=3/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Aug. 29.90 UT: m1=11.5, Dia.=2.1′, DC=5, Tail= 0.2 deg in PA: 140 deg ... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 28.89 UT: m1=10.8, Dia.=4′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2013 Aug. 28.08 UT: m1=11.3, Dia.=1′, DC=4... 19-cm R f/14 (100x)... Isbel González González (Guayos, Sancti Spíritus, Cuba)
2013 Aug. 26.10 UT: m1=11.4, Dia.=1′, DC=4... 19-cm R f/14 (100x)... Isbel González González (Guayos, Sancti Spíritus, Cuba) [MALE instrumental 13.5]
2013 Aug. 25.14 UT: m1=8.9 CCD, Dia.=1’, Tail= 16.7′ PA: 139 deg ... CCD images unfiltered... Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star 318-066478 mag.=12.69]
2013 Aug. 22.21 UT: m1=11.3 CCD, Dia.= 0.6’... Tail= 1.2 deg PA: 144 deg ... CCD images unfiltered... Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 445-989 mag.=9.871]
2013 Aug. 19.08 UT: m1=11.7 CCD, Dia.=1.2’... CCD images unfiltered... Clermont Vallière (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 4450-1261 mag.=9.879]
2013 Aug. 18.15 UT: m1=10.1, Dia.=4′, DC=4... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2012 Aug. 16.92 UT: m1=11.0, Dia.=3.8′, DC=5... 20-cm L (80x)... Artyom Novichonok (Sheltozero, Russia)
2013 Aug. 15.23 UT: m1=11.2 CCD... CCD images unfiltered... Pierre Laporte (Cd’OA Monts Notre-Dame, Québec, Canada) [comparison star Tycho 445-1889 mag.=9.373]
2013 Aug. 12.16 UT: m1=11.0, Dia.=4′, DC=3... 15-cm SCT f:10 (62x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Aug. 11.16 UT: m1=10.5, Dia.=2.5′, DC=4... 30.5-cm L (88x)... Todd Augustyniak (Coral Woods Conservation Area, Marengo, Illinois, USA) [Tail 6′ long with PA 160 degrees]
2013 Aug. 10.92 UT: m1=10.8, Dia.=4′ DC=2... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2013 Aug. 09.84 UT: m1=10.5, Dia.=2.5′, DC=3... 25.4-cm L (80x)... Danil Sidorko (Korenovsk, Russia)
2013 Aug. 09.83 UT: m1=10.5, Dia.=2.6′, DC=4/... 25.4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 Aug. 08.83 UT: m1=10.5, Dia.=2.6′, DC=4/... 25.4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 Aug. 07.96 UT: m1=9.9, Dia.=3′, DC=5, Tail= 0.27 deg. in PA: 166 deg ... 30-cm L f/5 (60x)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland)
2013 Aug. 06.80 UT: m1=10.5, Dia.=2.4′, DC=4... 25.4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 Aug. 06.01 UT: m1=9.9 CCD + V filter, Dia.=3.0′, DC=5, Tail= 0.50 deg. in PA: 165 deg ... 15-cm L f/4 (4x60s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Stacking and photometry: IRIS. Catalog UCAC4 – 4 comparison stars with B-V=0.60-0.67]
2013 Aug. 06.00 UT: m1=10.5, Dia.=3.0′, DC=3, Tail= 8’ long to PA 165: deg ... 50.8-cm L (78x)... Sandor Szabo (Hungary)
2013 Aug. 05.98 UT: m1=10.3 CCD + V filter, Dia.=1.5′, DC=6... 15-cm L f/4 (6x30s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland)[Stacking and photometry: IRIS. Catalog UCAC4 – 4 comparison stars with B-V=0.60-0.67]
2013 Aug. 05.90 UT: m1=9.9, Dia.=4.6′, DC=5... 25×100 B... Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 05.89 UT: m1=10.6, Dia.=3.8′, DC=5/... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 05.80 UT: m1=10.5, Dia.=2.2′, DC=5... 25.4-cm L (37.5x, 120x, 240x)... Danil Sidorko (Korenovsk, Russia)
2013 Aug. 04.73 UT: m1=10.4, Dia.=2′.7, DC=3/... 20-cm L f/5 (30x)... Man-To Hui [Nhut Thung Pau, Canton, China) [city lights]
2013 Aug. 04.14 UT: m1=10.4, Dia.=2.8′, DC=4/... 30.5-cm L (115x)... Todd Augustyniak (Wildcat Mountain State Park, Ontario, Wisconsin, USA) [Hint of a tail visible to south]
2013 Aug. 03.96 UT: m1=9.1, Dia.=9.3′, DC=5... 10-cm refractor (28x)... Jakub Cerny (Senohraby, Czech Republic)
2013 Aug. 01.13 UT: m1=10.3 CCD, Dia.=1.3’... CCD images unfiltered... Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [comparison star TYCHO 4466 2025 mag.=9.94]
2013 Aug. 01.03 UT: m1=10.1, Dia.=3′, DC=4/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Aug. 01.00 UT: m1=10.8, Dia.=2.5′, DC=5/... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2013 July 31.80 UT: m1=10.3, Dia.=2.6′, DC=5... 25.4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 31.71 UT: m1=10.4, Dia.= 2.2′, DC=2/... 20-cm L F/5 (48x)... Man-To Hui (Nhut Thung Pau, Canton, China) [city lights... intermittent thin clouds... motion clearly seen in a spell of ~1 hr.]
2013 July 30.91 UT: m2=13.1 CCD, Dia.=&8.7′ Tail= 19′ in PA: 173 deg ... 0.15-m f/7.3 refractor + CCD... A. Novichonok & T.Prystavski (AstroCamp Observatory I89. Remotely Nerpio, Spain)
2013 July 30.80 UT: m1=10.3, Dia.=2.5′, DC=5... 25.4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 29.80 UT: m1=10.2, Dia.=2.8′, DC=5... 25.4-cm L (37.5x, 80x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 28.79 UT: m1=10.3, Dia.=3′, DC=6... 25.4-cmm L (37.5x, 80x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 26.92 UT: m1=10.3:, Dia.=3′, DC=2... 20.3-cm L f/6 (68x)... Marian Legutko (Gliwice, Poland) [slight haze, moon interfered... Sidgwick method... observation place: Medium Beskids]
2013 July 19.87 UT: m1=10.1:, Dia.=2′, DC=3... 20.3-cm L f/6 (68x)... Marian Legutko (Gliwice, Poland) [good transparency, moon interfered... Sidgwick method... observation place: Medium Beskids]
2013 July 18.92 UT: m1=10.0:, Dia.=2′, DC=3... 20.3-cm L f/6 (68x)... Marian Legutko (Gliwice, Poland) [poor transparency, moon interfered... Sidgwick method... observation place: Medium Beskids]
2013 July 18.05 UT: m1=9.2, Dia.=5′, DC=5... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20 -cm SCT (77x): m1=9.3, Cola de polvo: 0.2º en AP 200º]
2013 July 18.04 UT: m1=9.0, Dia.=3.5′, DC=2/... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 16.92 UT: m1=10.1:, Dia.=2′, DC=4... 20.3-cm L f/6 (68x)... Marian Legutko (Gliwice, Poland) [partly cloudy, moon interfered... Sidgwick method... observation place: Medium Beskids]
2013 July 15.98 UT: m1=9.0, Dia.=3.5′, DC=2/... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 15.98 UT: m1=9.6, Dia.=3.5′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2013 July 13.85 UT: m1=9.6, Dia.=4′, DC=6... 25.4-cm L (37.5x, 80x)... Danil Sidorko (Korenovsk, Russia)
2013 July 12.94 UT: m1=9.2, Dia.=4′, DC=s5... 32-cm L F/5 (48x)... Uwe Pilz (Leipzig, Germany)
2013 July 11.85 UT: m1=9.3, Dia.=4′, DC=6... 25.4-cm L (37.5x, 80x)... Danil Sidorko (Korenovsk, Russia)
2013 July 10.86 UT: m1=9.3, Dia.=4.2′, DC=6... 25.4-cm L (37.5x, 80x)... Danil Sidorko (Korenovsk, Russia)
2013 July 10.00 UT: m1=8.9, Dia.=4′, DC=2/... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 09.84 UT: m1=9.2, Dia.=3.3′, DC=5... 25.4-cm L (37.5x, 80x)... Danil Sidorko (Korenovsk, Russia)
2013 July 09.01 UT: m1=9.2, Dia.=5′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2013 July 09.00 UT: m1=8.8, Dia.=4′, DC=2/... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 08.95 UT: m1=8.2, Dia.=10’, DC=2... 8×56 B... Sandor Szabo (Hungary) [In 50.8L (78x) coma is 6’, the tail is 0.5 deg to PA 195 deg.]
2013 July 07.98 UT: m1=8.8, Dia.=4′, DC=2/... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 07.98 UT: m1=9.2, Dia.= 5′ DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2013 July 07.98 UT: m1=8.8 CCD + V filter, Dia.=8.9′, DC=4... 3.6-cm A f/2.8 (25x4s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS. Catalog (TK) – 2 comparison stars: 8.78mag B-V=0.61 and 9.40mag B-V=0.70. The same comparison stars have been taken in the visual observation on July 07.96]
2013 July 07.96 UT: m1=8.8, Dia.=9′, DC=4... 6.8-cm R f/5.8 (19x)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Catalog Tycho-2 (TK), comet alt. 56 deg. NELmag=6]
2013 July 07.85 UT: m1=9.3, Dia.=4.2′, DC=6... 25.4-cm L (37.5x, 48x)... Danil Sidorko (Korenovsk, Russia)
2013 July 06.98 UT: m1=9.5... 7×50 B... Uwe Pilz (Leipzig, Germany)
2013 July 05.99 UT: m1=9.2, Dia.= 3′ DC=6... 42x200L... Alex Scholten (Eerbeek, Netherlands)
2013 July 05.85 UT: m1=9.5, Dia.=3.0′, DC=7... 25,4-cm L (37.5x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 04.83 UT: m1=9.1, Dia.=3.1′, DC=7... 25,4-cm L (37.5x, 48x)... Danil Sidorko (Korenovsk, Russia)
2013 July 02.97 UT: m1=8.6, Dia.=4′, DC=3... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.97 UT: m1=8.6, Dia.=4′, DC=3... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 July 01.85 UT: m1=8.8, Dia.=4′, DC=6... 25,4-cm L (37x, 48x, 120x)... Danil Sidorko (Korenovsk, Russia)
2013 July 01.00 UT: m1=8.2, Dia.=5′, DC=5... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [En 20-cm SCT (77x): m1=8.6, Cola de polvo: 0.1º en AP 200º]
2013 June 30.73 UT: m1=8.7, Dia.=4.3′, DC=3... 20-cm L F/5 (30x)... Man-To Hui (Nhut Thung Pau, Canton, China) [moonlight... very close to a star of mag 8.9]
2013 June 29.97 UT: m1=8.7, Dia.=6′, DC=5, Cola= 15′... 11×80 B... Carlos Labordena (Castellón, España)
2013 June 20.01 UT: m1=8.4, Dia.=4′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 19.02 UT: m1=8.4, Dia.=4′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 17.93 UT: m1=8.3, Dia.=4′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 17.02 UT: m1=8.3, Dia.=4.5′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 16.95 UT: m1=8.6 CCD + V filter, Dia.=5.3′, DC=5... 3.6-cm A f/2.8 (18x4s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP530 8.35 mag and B-V=0.62, comet alt. 31.5 deg.]
2013 June 16.03 UT: m1=7.7, Dia.=7′, DC=5, Tail= 20′... 11×80 B... Carlos Labordena (Castellón, España)
2013 June 15.97 UT: m1=8.3, Dia.=6′ DC=5... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2013 June 15.96 UT: m1=8.5 CCD + V filter, Dia.=5.3′, DC=5... 3.6-cm A f/2.8 (16x4s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP530 8.35 mag and B-V=0.62. Clouds]
2013 June 15.06 UT: m1=7.6, Dia.=7′, DC=5... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España ) [ En 25x100B: Cola de polvo de 0.3º en AP 200º. Cola iónica no observable]
2013 June 15.01 UT: m1=8.3, Dia.=6′ DC=5... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2013 June 13.04 UT: m1=7.6, Dia.=4′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 12.79 UT: m1=7.4, Dia.=6.3′, DC=5... 20-cm L f/5 (30x)... Man-To Hui (Nhut Thung Pau, Canton, China)
2013 June 12.04 UT: m1=7.5, Dia.=4′, DC=5... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 June 11.96 UT: m1=7.8, Dia.=8′, DC=2... 8×56 B... Sandor Szabo (Hungary)
2013 June 10.00 UT: m1=8.2 CCD + V filter, Dia.=5.1′, DC=5... 3.6-cm A f/2.8 (16x4s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV), comp. star HIP2305 7.95 mag and B-V=0.69, comet alt. 33.5 deg. Clouds and twilight]
2013 June 08.99 UT: m1=7.8, Dia.= 8′ DC=3... 15x80B... Alex Scholten (Eerbeek, Netherlands)
2013 June 08.32 UT: m1=7.4, Dia.=6′, DC=4/... 20×100 B... Marco Goiato (Araçatuba, Brasil)
2013 June 07.01 UT: m1=7.5, Dia.=8′, DC=5... 15x80B... Alex Scholten (Eerbeek, Netherlands)
2013 June 06.45 UT: m1=7.0, Dia.=5′, DC=5... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 June 06.36 UT: m1=7.7, Dia.=4′, DC=3... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2013 June 05.99 UT: m1=7.1, Dia.=4′, DC=2... 7×50 B... Uwe Pilz (Leipzig, Germany)
2013 June 05.36 UT: m1=7.4, Dia.=4′, DC=3... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil)
2013 June 04.09 UT: m1=7.2, Dia.=8′, DC=5, Tail= 0.6º en AP: 270º... 10×50 B... Juan José González ( Alto del Castro – Aralla, alt. 1720 m, León, España) [En 25x100B: m1=7.6, cola iónica de 0.6º en AP 270º, cola de polvo de 0.2º en AP 200º]
2013 June 03.36 UT: m1=7.5, Dia.=3′, DC=3... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil)
2013 June 02.04 UT: m1=6.7, Dia.=7′, DC=3, Tail= 15′... 11×80 B... Carlos Labordena (Castellón, España)
2013 June 01.99 UT: m1=7.2, Dia.=~10′, DC=3... 15x80B... Alex Scholten (Eerbeek, Netherlands) [altitude 15 degrees]
2013 June 01.80 UT: m1=7.1, Dia.=7.8′, DC=6... 20-cm reflector... Man-To Hui (Nhut Thung Pau, Canton, China) [road lights and moonlight]
2013 June 01.44 UT: m1=7.0, Dia=4′, DC=5... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 June 01.03 UT: m1=6.8, Dia.=7′, DC=4/... 10×50 B... Juan José González (Los Barrios de Nistoso, alt. 1310 m, León, España) [Estimación realizada antes del orto lunar. Cola no observable a causa de la baja altura ( 11º ) sobre el horizonte. Cielo muy claro de montaña]
2013 May  31.82 UT: m1=7.5, Dia.=6.4′, DC=6... 20-cm reflector... Man-To Hui (Nhut Thung Pau, Canton, China) [road lights and strong moonlight]
2013 May  19.06 UT: m1=6.9, Dia.=5′, DC=6... 25×100 B... Martin Lehky (Hradec Kralove, Czech Republic)
2013 May  19.03 UT: m1=6.8, Dia.=4′, DC=4, Tail= 0.1 deg. PA: 300 deg ... 16×70 B... Uwe Pilz (Leipzig, Germany)
2013 May  18.03 UT: m1=7.4 CCD + V filter, Dia.=5.1′, DC=6... 3.6-cm A f/2.8 (8x4s)... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Stacking and photometry: IRIS, Cat. (HV) comp. star HIP1813 7.57 mag and B-V=0.64, comet alt. 13.2 deg.]
2013 May  18.02 UT: m1=6.9, Dia.=5′, DC=7... 7×35 B... Mieczyslaw Leszek Paradowski (Dabrowa, Poland) [Cat. (HV), Morris’ method, crystall clear sky, comet alt. 12.1 deg.]
2013 May  17.77 UT: m1=7.1, Dia.=8.5’, DC=5... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, central condensation very broad, no tail recognisable although the coma appears elongated to SW.]
2013 May  14.79 UT: m1=6.9, Dia.=6.5’, DC=5... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Zodiacal light interference, only one tail visible 16’ in length in P.A. 260 (approx.), low contrast background sky, 1° C ambient temperature]
2013 May  11.15 UT: m1=6.5, Dia.=7′, DC=5, Tail= 30′... 11×80 B... Carlos Labordena (Castellón, España)
2013 May  11.13 UT: m1=6.4, Dia.=8′, DC=5/, Tail= 0.8º en AP: 260º... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España ) [ Cola iónica de 0.8º en AP 260º, cola de polvo en abanico entre 190º y 280º, de 0.2º en AP 210º. Altura sobre el horizonte: 10º. Cielo muy claro de montaña]
2013 May  10.78 UT: m1=7.1, Dia.=5.5’, DC=5... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Coma appears circular with faint outer edges, gradual brightening to centre with bright but diffuse central condensation. Ion tail visible using averted vision to 20’ in P.A. 230 (approx.), dust tail was visible using averted vision to 13’ in length at P.A. 165 (approx.)]
2013 May  10.35 UT: m1=6.8, Dia.=7′, DC=5... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 May  10.35 UT: m1=7.0, Dia.=7′, DC=6, Tail= 0.5º in PA: 250 deg ... 20×100 B... Marco Goiato (Araçatuba, Brasil)
2013 May  08.36 UT: m1=6.5, Dia.=5′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 May  07.35 UT: m1=6.5, Dia.=4′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 May  05.15 UT: m1=6.7, Dia.=7′, DC=6, no tail... 11×80 B... Carlos Labordena (Castellón, España)
2013 May  04.15 UT: m1=6.2, Dia.=6′, DC=5/... 25×100 B... Juan José González (Puerto de Aralla, alt. 1500 m, León, España) [Muy baja altura: 6º. Comienzo del crepúsculo astronómico. Cielo muy claro de montaña]
2013 Apr. 29.35 UT: m=6.1, Dia.=5′, DC=6... 10x50B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 16 degress, moonlight)
2013 Apr. 23.35 UT: m=6.2*, Dia.=6′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 14 degress, nautical twilight)
2013 Apr. 22.80 UT: m1=5.9, Dia.=6, DC=6... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia) [Low elevation. Not seen using 4x40B]
2013 Apr. 22.78 UT: m1=6.1, Dia.=6.6’, DC=5... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Coma small but compact, hint of elongation to SSW, tail not visible, low altitude (9°), zodiacal light interference. Comparison stars=Tycho-2... Method=S... Cat=TK]
2013 Apr. 22.35 UT: m1=6.0, Dia.=7′, DC=5... 11×80 B... Willian Souza (Sao Paulo, Brazil) [comet altitude ~15 degress, nautical twilight)
2013 Apr. 21.35 UT: m1=5.4, Dia.=7′, DC=6... 7×50 B... Marco Goiato (Araçatuba, Brazil) [comet altitude: 12 degrees, sun altitude: -15 degrees, atmospheric extinction applied, clouds]
2013 Apr. 21.35 UT: m=6.0*, Dia.=8′, DC=7... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degress, nautical twilight)
2013 Apr. 20.35 UT: m=6.0, Dia.=8′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degress, nautical twilight)
2013 Apr. 18.35 UT: m=5.9, Dia.=7′, DC=6/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 12 degress, nautical twilight)
2013 Apr. 17.35 UT: m=5.7, Dia.=9′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 11 degress, nautical twilight)
2013 Apr. 17.35 UT: m1=5.2, Dia.=8′, DC=6/, Tail: 0.5 degrees in PA: 240 deg .... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, sun altitude: – 15 degrees, atmospheric extinction applied]
2013 Apr. 17.35 UT: m1=5.7, Dia.=7′, DC=6... 20×80 B... Willian Souza (Sao Paulo, Brazil) [comet altitude 12 degress, nautical twilight)
2013 Apr. 16.35 UT: m1=5.4, Dia.=5′, DC=5... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, atmospheric extinction applied, sun altitude: -12º, nautical twilight]
2013 Apr. 16.35 UT: m1=5.7, Dia.=6′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 10 degrees, nautical twilight)
2013 Apr. 16.35 UT: m1=5.7, Dia.=7′, DC=6... 11×80 B... Willian Souza (Sao Paulo, Brazil) [comet altitude: 12 degrees, nautical twilight)
2013 Apr. 15.35 UT: m1=5.3, Dia.=5′, DC=5... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, atmospheric extinction applied, sun altitude: -12º, nautical twilight, clouds]
2013 Apr. 15.35 UT: m1=5.6, Dia.=8′, DC=6/... 10x50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude: 10 degrees, nautical twilight)
2013 Apr. 10.79 UT: m1=4.9... 10×50 B... David A. J. Seargent, The Entrance, NSW, Australia) [Low elevation. Beginning of tail glimpsed while sky still relatively dark]
2013 Apr. 07.35 UT: m=5.2, Dia.=6′, DC=6/... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 7 degress, nautical twilight)
2013 Apr. 01.35 UT: m1=6.0:, Dia.=3′, DC=8... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 5 degress, nautical twilight)
2013 Mar. 19.45 UT: m1=5.0, Dia.=6′, DC 4/, Tail= 1.5 degrees ... 11×70 B... Con Stoitsis (Clonbinane, Victoria Australia) [Not visible to the naked eye. Moon interference]
2013 Mar. 16.98 UT: m1=5.0, Dia.=8′, DC=5/6... Tail= 2°... 15×70 B... Mariano Ribas (Pardo, Pcia. de Buenos Aires, Argentina) [Cometa a 8º sobre el horizonte. Cielo despejado y buena visibilidad. Cola recta y bien definida en sus primeros 2 grados, luego resulta muy difusa. Coma marcadamente gris-verdosa]
2013 Mar. 14.41 UT: m1=4.3... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [About 3.5 – 4.0 degrees of tail visible in 25×100 binocular telescope]
2013 Mar. 12.41 UT: m1=4.3... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 12.41 UT: m1=–, Dia.=5′, DC=6, Tail= 3.5 degrees... 15×80 B... David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 11.002 TU: m1=~5.0: 12×60 B... Santiago Paolantonio (Falda del Carmen, Cba., Argentina) [altura 10 grados, sin corrección de extinción por baja altura]
2013 Mar. 10.99 UT: m1=4.5, Dia.=7′, DC=5... 20×50 B, Luis Mansilla (Rosario, Argentina)
2013 Mar. 10.42 UT: m1=4.4... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail visible to approx. 3 degrees in 15x80B]
2013 Mar. 09.048 UT: m1=4.8, Dia.=8′, DC=5... Tail= 1.3°... 15×70 B... Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso algo azulado. Interferencia leve por polvo en suspensión]
2013 Mar. 07.95 UT: m1=4.8, Dia.=10′, DC=7, Tail= 2 degrees in PA: 150°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 11 degrees, blue ionic tail, atmospheric extinction applied, sun altitude: -14º, nautical twilight]
2013 Mar. 07.41 UT: m1=4.4... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail glimpsed NE during times of special clarity. Spectacular sight in 25×100 binocular telescope]
2013 Mar. 07.028 UT: m1=4.6, Dia.=8’, DC=5... 20×50 B... Luis Mansilla (Rosario, Argentina) [polución lumínica moderada]
2013 Mar. 06.96 UT: m1=4.8, Dia=8′, DC=6... Tail= 1.5 degrees in PA: 150°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 10 degrees, blue ionic tail, atmospheric extinction applied, clouds]
2013 Mar. 06.41 UT: m1=4.3, Tail= 1 degree... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail glimpsed NE to about 1 degree during times of special clarity.Comet very impressive in 15×80 B]
2013 Mar. 06.043 UT: m1=4.9, Dia.=8′, DC=5... Tail= 1.1°... 15×70 B... Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso. Interferencia leve por polvo en suspensión]
2013 Mar. 05.41 UT: m1=4.3... Naked eye... David A. J. Seargent (Cowra, NSW, Australia)
2013 Mar. 05.048 UT: m1=4.8, Dia.=8′, DC=5... Tail= 3.2°... 15×70 B... Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Tono gris-verdoso]
2013 Mar. 04.96 UT: m1=4.2, Dia.=9’, DC=7, Tail= 30’ en AP: 165º... 10X50B... Alberto Anunziato (Paraná, Argentina) [Mét. Sidgwick, Cat. Tycho II... Luces urbanas]
2013 Mar. 04.41 UT: m1=4.4... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Impressive ion tail visible to about 3.5 degrees in 15x80B. Tail possibly glimpsed NE]
2013 Mar. 03.96 UT: m1=5.1, Dia.=10′, DC=6, Tail= 2 degrees in PA: 150°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 12 degrees, blue ionic tail, atmospheric extinction applied]
2013 Mar. 03.41 UT: m1=4.5... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Impressive ion tail visible to about 2 degrees in 25×100 binocular telescope]
2013 Mar. 02.99 UT: m1=4.3, Dia.=10′, DC=5... 10x50B... Mariano Ribas (Buenos Aires, Argentina)
2013 Mar. 02.96 UT: m1=5.3, Dia.=10′, DC=6, Tail= 1.5 degrees in PA: 160°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 13 degrees, blue ionic tail, clouds]
2013 Mar. 02.95 UT: m1=5.2, Dia.=8′, DC=6... 10×50 B... Alexandre Amorim(Florianopolis,Brazil)
2013 Mar. 01.96 UT: m1=5.3, Dia.=10′, DC=6, Tail= 2 degrees in PA: 160°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [comet altitude: 14 degrees, blue ionic tail, atmospheric extinction applied]
2013 Mar. 01.95 UT: m1=5.2, Dia.=5′, DC=5... 11×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Mar. 01.94 UT: m1=5.3, Dia.=8′, DC=6... 10×50 B... Alexandre Amorim(Florianopolis,Brazil)[clouds interference]
2013 Mar. 01.00 UT: m1=4.7, Dia.=8′, DC=5... 10×50 B... Mariano Ribas (Buenos Aires, Argentina)
2013 Feb. 29.007 UT: m1=4.8, Dia.=12′, DC=6... 20×50 B... Luis Mansilla (Zona Rural de La Carolina, Argentina) [altura:20°... en 15x70B cola iónica de 0.5 grados en AP:150°]
2013 Feb. 28.94 UT: m1=5.2, Dia.=10′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)[light pollution and clouds interference]
2013 Feb. 27.989 UT: m1=4.5, Dia.=8′, DC=5... 20×50 B... Luis Mansilla (Rosario, Argentina) [altura:23°]
2013 Feb. 27.049 UT: m1=5.0, Dia.=8′, DC=5... 15×70 B... Rodolfo Ferraiuolo (San Rafael, Mza., Argentina) [Fuerte interferencia lunar]
2013 Feb. 27.015 UT: m1=4.6, Dia.=8′, DC=5/... 20×50 B... Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 27.00 UT: m1=4.9, Dia.=10′, DC=5/6... 10x50 B... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 25º sobre el horizonte. Interferencia lunar moderada. MALE: 4.5]
2013 Feb. 26.005 UT: m1=4.7, Dia.=8′, DC=5/... 20×50 B... Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 26.00 UT: m1=4.8, Dia.=7′, DC=6... 7×50 B... Marco Goiato (Araçatuba, Brasil)...[ moonlight interference, clouds, comet altitude: 10 degrees, atmospheric extinction applied]
2013 Feb. 26.00 UT: m1=5.0, Dia.=7′, DC=5/6... 10×50 B... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 26º sobre el horizonte. Interferencia lunar. El cometa aún no se ve a simple vista en el cielo de Buenos Aires. Método: In-Out. MALE: 4.6]
2013 Feb. 25.02 UT: m1=5.1, Dia.=8′, DC=5... 10×50 B... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 27º sobre el horizonte. Interferencia lunar]
2013 Feb. 25.01 UT: m1=4.8, Dia.=9′, DC=6, Tail= 30′... 20×50 B... Luis Mansilla (Rosario, Argentina) [altura:23° con interferencia lunar fuerte]
2013 Feb. 24.98 UT: m1=4.9, Dia.=8′, DC=6... 7×50 B... Marco Goiato (Araçatuba, Brasil) [moonlight interference]
2013 Feb. 24.96 UT: m1=5.2, Dia.=8′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)[light pollution and moonlight interference]
2013 Feb. 22.95 UT: m1=5.1, Dia.=8′, DC=5/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Feb. 22.02 UT: m1=4.9, Día.=10′, DC=6... 10×25 B y 20×50 B... Luis Mansilla (Rosario, Argentina) [interferencia lunar]
2013 Feb. 22.00 UT: m1=5.3, Dia.=8′, DC=5/6... 10×50 B... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 28º sobre el horizonte. Moderada interferencia lunar. Cielo despejado en zona del cometa. Método: In-Out. MALE: 4.5]
2013 Feb. 21.97 UT: m1=5.0, Dia.=5′, DC=5, 20×80 B... Willian Souza (Sao Paulo, Brazil) [moonlight]
2013 Feb. 20.98 UT: m1=4.9, Dia.=8′, DC=7... 7×50 B... Marco Goiato (Araçatuba, Brasil) [clouds, moonlight interference ]
2013 Feb. 20.94 UT: m1=5.5, Dia.=5′, DC=5... 10x50B... Alexandre Amorim (Florianopolis, Brazil) [moonlight and clouds interference]
2013 Feb. 20.50 UT: m1=5.5, Dia.=6.5′, DC=5... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [Tail visible with averted vision to the SE, approx 15′ in length. Coma condensed centre, more diffused towards the edges. Moon interference]
2013 Feb. 20.41 UT: m1=5.5, Dia.=9.5’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Moonlight, coma shows tail to the SSE 30’ in length. Method=M... Cat=TK]
2013 Feb. 19.40 UT: m1=5.5, Dia.=8.5’, DC=5/6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Tail to SSE 25’ in length, narrower than the coma, averted vision works best to view the tail. Coma condensed to the centre with very faint outer coma. Central condensation almost stellar. Comparison stars checked using Tycho-2... Method=M... Cat=TK]
2013 Feb. 17.98 UT: m1=5.4, Dia.=6′, DC=5... 20×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Feb. 17.96 UT: m1=5.2, Dia.=10′, DC=6... 7×50 B... Marco Goiato (Araçatuba, Brasil) [clouds, moonlight interference]
2013 Feb. 17.08 UT: m1=5.4, Dia.=13’, DC=7, Tail= not visible... 8x40 B... Alberto Anunziato (Oro Verde, Argentina) [Altura 18º. Corrección Extinción Atmosférica, Mét. Sidgwick, Cat. Tycho II]
2013 Feb. 17.055 UT: m1=5.2, Dia.=15′, DC=6... 20×50 B... Luis Mansilla (Rosario, Argentina) [alt.: 24 grados. Cola de 0.7° en visión desviada]
2013 Feb. 16.49 UT: m1=4.9... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 16.09 UT: m1=5.5*, Dia.=7′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [comet altitude 13 degrees]
2013 Feb. 16.05 UT: m1=5.3, Dia.=15′, DC=6... 20×50 B... Luis Mansilla (Rosario, Argentina) [alt.: 25 grados. Cola de 0.5° en visión desviada]
2013 Feb. 15.75 UT: m1=5.5, Dia.=15’, DC=5/6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Tail to SSE 1.5° in length using averted vision. Slightly affected by passing cloud. Method=M... Cat=TK]
2013 Feb. 15.58 UT: m1=5.6, Dia.=8′, DC=6... 10-cm f4 refl. (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 15.50 UT: m1=5.0... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Possibly a little elongated as seen with naked eye (brightest section of tail marginally visible NE?)]
2013 Feb. 15.09 UT: m1=5.4, Dia.=13′, DC=6... 20×50 B... Luis Mansilla (Rosario, Argentina) [alt.: 23 grados. Cola en visión desviada]
2013 Feb. 14.49 UT: m1=5.0... Naked Eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail visible in 6x35B and impressive in 15x80B]
2013 Feb. 14.125 UT: m1=5.4:... 20×50 B... Luis Mansilla (Rosario, Argentina) [nubosidad alta]
2013 Feb. 13.52 UT: m1=5.5, Dia.=18’, DC=4/5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SSE, tail to SSE 27’ in length. Globular cluster 47 Tucana and the comet were within the same field of view on the 7×50’s, opposite each other but just inside the edges of FOV. Visible with naked eye as a small hazy patch of light. Method=M... Cat=TK]
2013 Feb. 13.51 UT: m1=5.1... Naked eye... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 13.12 UT: m1=5.5... Naked Eye... Mariano Ribas (Sierra de la Ventana, Buenos Aires, Argentina) [Cometa apenas visible a ojo desnudo. Cola de 2º visible en 10×50 B. Cielo despejado y transparente. MALE 6.1]
2013 Feb. 13.083 UT: m1=5.4, Dia.=12′, DC=6/... 20×50 B... Luis Mansilla (Rosario, Argentina) [alt.: 25 grados. Cola en visión desviada]
2013 Feb. 12.73 UT: m1=5.2... Naked eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail impressive in 25×100 B]
2013 Feb. 12.45 UT: m1=5.5, Dia.=18’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Transparent outer coma, bright inner coma with small disc-like central condensation, slight elongation to SSE. Method=M... Cat=TK]
2013 Feb. 12.37 UT: m1=5.1, Dia.=–, DC=5... Naked Eye... John Drummond (Gisborne, New Zealand) [Comet Lemmon can just be seen visually. Used star patterns to get a definite ID. Dark, rural location]
2013 Feb. 12.229 UT: m1=5.6, Dia.=13′, DC=6... 7×50 B... Rodolfo Ferraiuolo (San Rafael, Mendoza, Argentina)
2013 Feb. 12.083 UT: m1=5.5, Dia.=12′, DC=6... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 11.85 UT: m1=5.6, Dia.=8′, DC=6... 10-cm refl. f/4 (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 11.75 UT: m1=5.5, Dia.=15′, DC=5/... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [I could almost fit 47 Tuc, and the comet in the same FOV.]
2013 Feb. 11.51 UT: m1=5.4... Naked eye... David A. J. Seargent (Cowra, NSW, Australia) [Tail clearly visible to about 2 degrees (pa=150 degrees) in 25×100 B]
2013 Feb. 11.02 UT: m1=5.6:, Dia.=10′, DC=5... 20×50 B... Luis Mansilla (Rosario, Argentina) [bruma]
2013 Feb. 10.99 UT: m1=5.6... 10×50 B... Margarete J. Amorim (Florianopolis, Brazil)
2013 Feb. 10.97 UT: m1=5.5, Dia.=10′, DC=4/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Feb. 10.71 UT: m1=5.8, Dia.=7.5′, DC=6... 10-cm f/4 refl. (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 10.27 UT: m1=5.8, Dia.=9’, DC=7, Tail= not visible... 16×50 B... Mariano Peter (Oro Verde, Argentina)
2013 Feb. 10.08 UT: m1=5.6, Dia.=9’, DC=7, Tail= not visible... 8×40 B... Alberto Anunziato (Oro Verde, Argentina)
2013 Feb. 10.06 UT: m1=5.8, Dia.=10′, DC=4/... 20×50 B... Luis Mansilla (Rosario, Argentina) [brumoso, nubosidad en aumento]
2013 Feb. 10.03 UT: m1=6.0, Dia.=7′, DC=5/6... 8-cm Refractor f/5 (20x)... Gonzalo Vargas (Cochabamba, Bolivia)
2013 Feb. 09.76 UT: m1=5.8, Dia.=6.5′, DC=6... 10-cm f4 refl. (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 09.51 UT: m1=5.8, Dia.=15’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to SSE, extended 15’ in direction of tail, thin transparent outer coma with broad and bright central condensation, almost stellar. Glimpses of tail to a length of 45’ away from head visible  using averted vision to SSE. Comparison stars checked using Tycho-2 data in Guide 9.0... Method=M... Cat=TK]
2013 Feb. 09.25 UT: m1=5.7, Dia.=8′, DC=5... 11×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Feb. 08.63 UT: m1=5.3, Dia.=26’, DC=1... Naked Eye... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, visible with direct vision but best seen using averted vision. Limiting magnitude=6.6. Comparison stars checked using Tycho-2 data in Guide 9.0... Method=S... Cat=TK]
2013 Feb. 08.62 UT: m1=5.7, Dia.=17’, DC=5/6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma appears circular with faint elongation of the outer coma to the West approximately. Bright central condensation with bright inner coma and faint transparent outer coma. Method=M... Cat=TK]
2013 Feb. 08.14 UT: m1=5.8, Dia.=12′, DC=5, Tail= 0.5 deg ... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 08.09 UT: m1=5.9, Dia.=11′, DC=5/... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 07.74 UT: m1=5.9, Dia.=7′, DC=5... 10-cm f4 refl. (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 07.47 UT: m1=5.6... 6×35 B... David A. J. Seargent (Cowra, NSW, Australia) [About 1 degree of tail visible in 25.4-cm L at 71x]
2013 Feb. 07.12 UT: m1=5.7, Dia.=15′, DC=6, Tail= 1.5 degree in PA: 180°... 7×50 B... Marco Goiato (Araçatuba, Brasil) [clouds, significant improvement of the image using Swan filter in a 0.22m reflector]
2013 Feb. 07.09 UT: m1=5.9, Dia.=10′, DC=5... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 07.03 UT: m1=5.8 ... 10×50 B... Margarete J. Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 07.02 UT: m1=5.6, Dia.=9′, DC=5, 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 06.72 UT: m1=5.9, Dia.=7.5′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 06.68 UT: m1=5.4, Dia.=26’, DC=1/2... Naked Eye... Chris Wyatt (Walcha, NSW, Australia) [Moonlight affected. Visible using averted vision but was easy to locate, sometimes visible using direct vision, coma appears as a small fuzzy spot, no tail, Swan Band filter enhances coma. Limiting magnitude=6.5. Method=S... Cat=TK]
2013 Feb. 06.66 UT: m1=5.6, Dia.=15’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma strongly condensed, fading to edges, slight elongation to NW, appears more circular overall though, no tail visible. Method=M... Cat=TK]
2013 Feb. 06.45 UT: m1=5.6... Naked eye.... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 06.12 UT: m1=5.8, Dia.=10′, DC=5... 10×50 B... Mariano Ribas (Sierra de la Ventana, Buenos Aires, Argentina)
2013 Feb. 06.08 UT: m1=5.8, Dia.=15′, DC=6, Tail= 0.3 deg ... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 05.47 UT: m1=5.9, Dia.=22’, DC=1/2... Naked Eye... Chris Wyatt (Walcha, NSW, Australia) [Visible in periods of good seeing as a faint round haze, sometimes appeared stellared due to scintillation. Tail was not visible. Limiting magnitude was 6.5. Method=S... Cat=TK]
2013 Feb. 05.45 UT: m1=6.2, Dia.=15’, DC=5... 7x50B... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to NW, bright central condensation fading to edges, strongly condensed. Method= M... Cat= TK] [Notes: C/2012 F6 also observed through my 10” f/5 dobsonian reflector at x39. The ion tail showed up as a thin filament and was traced for nearly 2 degrees before it fanned out slightly and was lost in the background. The central condensation was not stellar, it appeared as a small densely packed packet of light surrounded by a large oval shaped luminous haze (inner coma) tapering to a more rounded shaped outer coma. The inner coma tapered back to the tail with a short fan-like extension either side of the tail]
2013 Feb. 05.32 UT: m1=6.0, Dia.=8′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 05.18 UT: m1=6.0, Dia.=6′, DC=5/... 11×80 B... Jose G de S Aguiar (Campinas, Brazil)
2013 Feb. 05.08 UT: m1=5.9, Dia.=12′, DC=5, Tail= 0.2 deg ... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Feb. 05.00 UT: m1=6.0, Dia.=15′, DC=7, Tail= 1 degree in PA: 220°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Feb. 04.46 UT: m1=5.6, Dia.=12′... 6×35 B... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 04.51 UT: m1=5.6, Dia.=33’, DC=0/1... Naked Eye... Chris Wyatt (Walcha, NSW, Australia) [Comet was observed at the extreme limit of averted vision in good seeing, very large coma. Limiting magnitude was 6.0, conditions were windy with patchy decaying clouds dissipating from the escarpment (at Walcha Road, NSW, Australia), moisture in the air evident from headlights of passing cars illuminating the sky at the ground, transparency was good. Method=S... Cat=TK]
2013 Feb. 04.45 UT: m1=5.5, Dia.=9.0′, DC=4/... 11×70 B... Con Stoitsis (Clonbinane, Victoria, Australia) [Visible to naked eye with averted vision]
2013 Feb. 04.44 UT: m1=6.2, Dia.=14.5’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to NW, central condensation more diffused. Method=M... Cat=TK]
2013 Feb. 04.31 UT: m1=6.0, Dia.=12′, DC=4/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Feb. 04.16 UT: m1=6.1, Dia.=12’, DC=6, Tail= not visible... 10X50 B... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Feb. 03.67 UT: m1=6.0, Dia.=6′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Feb. 03.47 UT: m1=5.7... Naked eye... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 03.47 UT: m1=5.7... 6×35 B... David A. J. Seargent (Cowra, NSW, Australia)
2013 Feb. 03.26 UT: m1=7.7 CCD, Dia.=6.5′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 03.02 UT: m1=6.3, Dia.=10′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Feb. 02.26 UT: m1=6.0, Dia.=8′, DC=4/... 7×50 B... Willian Souza (Sao Paulo, Brazil)
2013 Feb. 02.25 UT: m1=7.8 CCD, Dia.=4.9′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Feb. 01.50 UT: m1=5.8, Dia.=10′, DC=4/, 11×70 B... Con Stoitsis (Echuca, Victoria, Australia) [Couldn’t see it with the naked eye, possibly due to sky conditions. Tail visible to NW, approx 8′ in length, and 10′ length with averted vision]
2013 Feb. 01.43 UT: m1=6.2, Dia.=12’, DC=6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to WNW, faint tail extension to WNW 10’ in length, small short appendage apparent to the East using averted vision. Barely visible with naked eye using averted vision in good seeing but too faint to get a reliable observation. Method=M... Cat=TK]
2013 Feb. 01.06 UT: m1=6.3, Dia.=10′, DC=5/... 20×50 B... Luis Mansilla (Rosario, Argentina)
2013 Jan. 31.98 UT: m1=6.3, Dia.=8′, DC=4/... 20×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 31.54 UT: m1=6.5, Dia.=6.5′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 31.43 UT: m1=5.9, Dia.=12’, DC=5... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 31.43 UT: m1=6.3, Dia.=10.4’, DC=6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has faint edges using averted vision, bright inner coma with faint stellar pseudo-nucleus. Not visible with the naked eye. Coma appears elongated NW. Method=M... Cat=TK]
2013 Jan. 30.55 UT: m1=6.5, Dia.=6.5′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia) [Observed before moon rise]
2013 Jan. 30.42 UT: m1=6.5, Dia.=9’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Difficult due to close proximity of bright star, coma edges diffuse, the inner half of the coma appears as a broad patch of light with slight gradation to centre. Comparison stars checked using Tycho-2 data in Guide 9.0... Method=M... Cat=TK]
2013 Jan. 30.31 UT: m1=6.2, Dia.=10′, DC=5/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 30.22 UT: m1=6.2, Dia.=6′, DC=5... 10×50 B... Mariano Ribas (Buenos Aires, Argentina)
2013 Jan. 30.21 UT: m1=6.3, Dia.=5′, DC=5/6... 12-cm R f8.3 (26x)... Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar. Método: In-Out. MALE: 4.5]
2013 Jan. 29.45 UT: m1=5.8, Dia.=7.5′, DC=4/... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [Conditions- Patchy cloud cover, and moon interference. No tail visible. Coma circular. Not visible to the naked eye from my location. The comet shoud be visible to the naked eye from a dark sky once the moon gets out the way this weekend]
2013 Jan. 29.43 UT: m1=6.2, Dia.=14’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, close to bright star, coma elongated to South. Moonlight interference. Method=M... Cat=TK]
2013 Jan. 28.29 UT: m1=6.5, Dia.=10′, DC=5/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 27.27 UT: m1=6.5, Dia.=11’, DC=5, Tail= not visible... 25-cm SCT (40x)... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 26.326 UT: m1=6.4, Dia.=6′, DC=4... 10×50 B... Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar moderada. Método: In-Out. MALE: 4.5]
2013 Jan. 26.312 UT: m1=6.6, Dia.=5′, DC=4... 12-cm R f8.3 (26x)... Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Interferencia lunar moderada. Método: In-Out. MALE: 4.5]
2013 Jan. 26.29 UT: m1=6.7, Dia.=6′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2013 Jan. 26.15 UT: m1=6.5, Dia.=5′, DC=6... 11×80 B... Jose G de S Aguiar (Campinas, Brazil)
2013 Jan. 25.31 UT: m1=6.5 (M), Dia.=12′, DC=5, Tail: 1 degree in PA: 320°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 25.12 UT: m1=6.7, Dia.=7′, DC=5... 20×60 B... Willian Souza (Santos, Brazil) [moonlight interference]
2013 Jan. 24.83 UT: m1=6.8, Dia.=7′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 24.66 UT: m1=6.6, Dia.=8’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma appears circular, slight brightening to centre, no tail. Method=M... Cat=TK]
2013 Jan. 24.45 UT: m1=6.6, Dia.=7.5′, DC=4, No tail observed... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [Patchy cloud, and moon interference reduced transparency. My observation was also completed before twilight ended]
2013 Jan. 24.28 UT: m1=6.8, Dia.=7′, DC=5/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 23.78 UT: m1=6.8, Dia.=7′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 23.31 UT: m1=6.5 (M), Dia.=12′, DC=5, Tail= 0.5 degrees in PA: 310°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 23.27 UT: m1=6.6, Dia.=10’, DC=4, Tail= not visible... 10.5-cm Maksutov-Cassegrain (45x)... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 22.29 UT: m1=7.0, Dia.=10′, DC=4... 20×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 22.70 UT: m1=6.9, Dia.=7.5′, DC=4... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [The comet was obviously brighter than  a week ago]
2013 Jan. 22.70 UT: m1=7.3, Dia.=9’, DC=3/4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma appears circular, not tail, slight haze in atmosphere from passing clouds. Method=M... Cat=TK]
2013 Jan. 22.248 UT: m1=6.7, Dia.=6′, DC=4/5... 12 -cm R f8.3 (26x)... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 53º de altura. Cielo parcialmente nublado, aunque la estimación se hizo con cielo despejado en la zona del cometa. Método: In-Out. MALE: 4.6]
2013 Jan. 21.83 UT: m1=6.8, Dia.=7′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 21.72 UT: m1=6.2... 4×40 B... David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 21.69 UT: m1=6.4... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 21.47 UT: m1=6.7... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia) [Observed in moonlight]
2013 Jan. 21.28 UT: m1=6.9, Dia.=10′, DC=4... 20×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 21.26 UT: m1=7.0... 7×50 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 20.69 UT: m1=7.0, Dia.=6, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 20.27 UT: m1=7.0, Dia.=7′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 20.25 UT: m1=6.7 (S), Dia.=12′, DC=4, Tail= 0.7 degrees in PA:290°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 20.250 UT: m1=7.1, Dia.=5′, DC=4... 12-cm R f8.3 (26x)... Mariano Ribas (Buenos Aires, Argentina) [Cometa a 55º de altura. Cielo parcialmente nublado, aunque limpio en la zona del cometa. Buena transparencia. Método: In-Out. MALE: 4.6]
2013 Jan. 20.06 UT: m1=6.8, Dia.=6, DC=5/... 25×100 B... Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 19.72 UT: m1=7.1, Dia.=8′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Middleton Beach, W. Australia)
2013 Jan. 19.71 UT: m1=7.0, Dia.=8′, DC=4... 8×40 B... Michael Mattiazzo (Castlemaine, Victoria, Australia)
2013 Jan. 19.29 UT: m1=7.2, Dia.=10′, DC=4... 20×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 19.28 UT: m1=7.1, Dia.=8′, DC=4/... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 19.17 UT: m1=7.1, Dia.=10′, DC=4... Tail= not observed... 20×80 B, ... Julio Nardon (Cnel. Arnold, Argentina) [Comparison stars: HYP61626 and Hyp59560, Method Sidgwick, Seeing: good]
2013 Jan. 19.14 UT: m1=6.8 (S), Dia.=12′, DC=4... Tail= 0.5 degrees in PA: 310°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 19.08 UT: m1=7.2, Dia.=8′, DC=4... 11×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 19.04 UT: m1=6.9, Dia.=6, DC=6... 25×100 B... Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 18.28 UT: m1=7.3, Dia.=7′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 18.12 UT: m1=6.9 (S), Dia.=12′, DC=4, Tail:0.5 degrees in PA:310°... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.09 UT: m1=7.3, Dia.=5′, DC=4... 10-cm R (50x)... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 18.05 UT: m1=6.9, Dia.=6, DC=5/... 25×100 B... Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 17.68 UT: m1=6.9, Dia.=14’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges with slightly brighter inner coma and gradually condensing to centre as a broad patch of light, no tail. Method=M... Cat=TK]
2013 Jan. 17.28 UT: m1=7.4, Dia.=7′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [clouds interferente]
2013 Jan. 17.05 UT: m1=7.0, Dia.=6, DC=5/... 25×100 B... Jose G. de S. Aguiar (Campinas, Brazil)
2013 Jan. 16.76 UT: m1=7.5, Dia.=6′, DC=5... 10-cm f4 refl (20x)... Andrew Pearce (Middleton Beach, W. Australia)
2013 Jan. 16.71 UT: m1=7.6, Dia.=9.5’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has a slight elongation to NW, no tail, twilight interference, thin haze in the air but not in the comets vicinity. Method=M... Cat=TK]
2013 Jan. 16.50 UT: m1=7.1, Dia.=8′, DC=4... 25×100 B... Michael Mattiazzo (Castlemaine, Victoria)
2013 Jan. 15.71 UT: m1=7.3, Dia.=9.6’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has a slight elongation to WNW, no tail. Method=M... Cat=TK]
2013 Jan. 15.65 UT: m1=7.1, Dia.=8′, DC=5, No tail... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [Some very light cloud cover affected transparency. Coma elongation to the NW]
2013 Jan. 15.52 UT: m1=7.2... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 15.30 UT: m1=7.5, Dia.=5′, DC=4... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil) [clouds interference]
2013 Jan. 14.27 UT: m1=7.5, Dia.=6′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 13.55 UT: m1=7.5, Dia.=10′, DC=6... 11×70 B... Con Stoitsis (Caulfield, Victoria, Australia) [Coma brighter at the centre. More diffused towards the edges]
2013 Jan. 13.312 UT: m1=7.7, Dia.=4′, DC=4/... 12-cm R f8.3 (26x)... Mariano Ribas (Buenos Aires, Argentina) [Cielo despejado. Buena transparecencia y visibilidad. Cometa a 68º de altura. Coma moderadamente concentrada. Método: In-Out. MALE: 4.7]
2013 Jan. 12.30 UT: m1=7.6, Dia.=6′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 13.28 UT: m1=7.5, Dia.=7′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 12.17 UT: m1=7.1 (S), Dia.=12′, DC=4... 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.66 UT: m1=7.3, Dia.=9.5’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges, circular in appearance, gradual brightening to centre, almost stellar, no tail. Method=M... Cat=TK]
2013 Jan. 11.50 UT: m1=7.3... 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia) [Comet close to star]
2013 Jan. 11.28 UT: m1=7.9, Dia.=5′, DC=6... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 11.17 UT: m1=7.1, Dia.=12′, 7×50 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.17 UT: m1=7.3, Dia.=10′, 20×100 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 10.80 UT: m1=8.0, Dia.=6′, DC=5... 10-cm L f:4 (20x)... Andrew Pearce (Nedlands, W. Australia)
2013 Jan. 10.594 UT: m1=7.8, Dia.=8′, DC=5... 11.4-cm L f8 (23.5x)... Rob Kaufman (Bright, Vic, Australia) [Tail not visible. Ref= NOMAD1 data in ViZier... Method=M]
2013 Jan. 10.28 UT: m1=8.0, Dia.=6′, DC=5... 10×50 B... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 10.11 UT: m1=7.6 (S), Dia.=7′, DC=5... 20×100 B... Marco Goiato (Araçatuba, Brasil) [clouds]
2013 Jan. 09.69 UT: m1=–, Dia.=10.5′, Tail= 0.5 deg in PA: 297 deg ... 15-cm R + CCD... Artyom Novichonok (remotely from Nerpio, Spain)
2013 Jan. 09.30 UT: m1=10.7 CCD, Dia.=2.0′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.67 UT: m1=7.5, Dia.=16’, DC=4/5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, fainter at edges, appears slightly elongated to SW, bright inner middle third of coma tapering in brightness to the edges, no tail. Method=M... Cat=TK]
2013 Jan. 08.21 UT: m1=7.2, Dia.=12′, DC=4... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 4º. Cielo muy claro de montaña. Estrellas de comparación a la misma baja altura que el cometa]
2013 Jan. 07.69 UT: m1=7.6, Dia.=13.5’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Moonlight, no tail, bright inner coma with diffuse edges, almost stellar central condensation. Method= M... Cat= TK]
2013 Jan. 07.59 UT: m1=7.3: 10×50 B... David A. J. Seargent (The Entrance, NSW, Australia)
2013 Jan. 07.50 UT: m1=7.7, Dia.=15’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges, inner half of coma brighter with small peak in brightness at centre. Strongly enhances with Swan Band filter, low alt. Method= M... Cat= TK]
2013 Jan. 07.368 UT: m1=8.5, Dia.=5′, DC=4... 25-cm f/4.5 (66x)... Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 07.29 UT: m1=7.9, Dia.=5′, DC=4... 11×80 B... Willian Souza (Sao Paulo, Brazil)
2013 Jan. 06.52 UT: m1=7.4, Dia.=18’, DC=3/4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse with gradual brightening to centre, almost stellar central condensation. Method=M... Cat=TK]
2013 Jan. 06.50 UT: m1=8.2, Dia.=12′, DC=3/... 11×70 B... Con Stoitsis (Clonbinane, Victoria, Australia) [Very large coma, obvious brightening towards the centre with averted vision]
2013 Jan. 06.09 UT: m1=8.0, Dia.=7.0’, DC=3, Tail= not visible... 25-cm SCT (40x)... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2013 Jan. 05.87 UT: m1=9.1, Dia.=4′, DC=3, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2013 Jan. 05.53 UT: m1=8.0, Dia.=15’, DC=3... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse with gradual brightening to centre, no tail. Method= M... Cat= TK]
2013 Jan. 05.17 UT: m1=8.2 (S), Dia.=5′, DC=5... 20×100 B... Marco Goiato (Araçatuba, Brasil) [moonlight interference]
2013 Jan. 03.52 UT: m1=8.1, Dia.=6′, DC=4... 25×100 B... Michael Mattiazzo (Castlemaine, Victoria, Australia) [large coma strongly enhanced with a SWAN band filter]
2013 Jan. 01.68 UT: m1=8.7, Dia.=4.7’, DC=6... 25-cm L f:5 (x9x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse with slight but definite central brightening, does not appear stellar, enhances strongly in Swan Band filter, moonlight affected. Method=M... Cat=TK]
2013 Jan. 01.29 UT: m1=8.6, Dia.=3′, DC=4... 7-cm R (28x)... Alexandre Amorim (Florianopolis,Brazil) [moonlight interference]
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... 7-cm 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. 24.22 UT: m1=11.0 CCD, Dia.=2.9′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2012 Dec. 23.69 UT: m1=9.7, Dia.=5.5’, DC=4... 25-cm 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. Method=S... Cat=TK]
2012 Dec. 23.29 UT: m1=9.6 (S), Dia.=6′, DC=4... 22-cm L (60x)... Marco Goiato (Araçatuba, Brasil)
2012 Dec. 23.25 UT: m1=8.8, Dia.=7.0’, DC=3, Tail= not visible... 25-cm SCT (40x)... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2012 Dec. 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... 25-cm 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. 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... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil) [nautical twilight]
2012 Dec. 17.68 UT: m1=9.7, Dia.=5.5’, DC=5/6... 25-cm 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 star. 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... 40-cm 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, Tail= not visible... 25-cm SCT (62x)... Alberto Anunziato (Oro Verde, Argentina) [Mét. Sidgwick, Cat. Tycho II]
2012 Dec. 14.27 UT: m1=12.5 CCD, Dia.=2.1′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2012 Dec. 13.65 UT: m1=9.8, Dia.=5.3’, DC=4... 25-cm 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. Method=S... Cat=TK]
2012 Dec. 13.32 UT: m1=12.5 CCD, Dia.=2.2′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2012 Dec. 13.16 UT: m1=10.4, Dia.=3′, DC=3... 40-cm 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... 20-cm L (57x)... Michael Mattiazzo (Castlemaine, Victoria)
2012 Dec. 11.66 UT: m1=10.8, Dia.=2.5′, DC=5... 11.4-cm 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... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2012 Nov. 22.24 UT: m1=11.3, Dia.=2.5′, DC=3... 20-cm SCT (100x)... Juan José González (Collado de Carmona, alt. 610 m, Cantabria, España)