C/2012 K5 (LINEAR)

C/2012 K5 (LINEAR)
2013 Feb. 28.78 UT: m1=13.8, Dia.=0.3′, DC=2... 40-cm reflector (250x)... Sandor Szabo (Sopron, Hunagry)
2013 Feb. 10.78 UT: m1=12.2, Dia.=1′, DC=2... 32-cm L f/5 (144x)... Uwe Pilz (Leipzig, Germany)
2013 Feb. 06.09 UT: m1=[11.3 Negativa... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2013 Feb. 02.13 UT: m1=14.2 CCD, Dia.=1.1′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 28.05 UT: m1=12.4 CCD, Dia.=0.4’... Tail= 2.0′ in PA: 54°... CCD images unfiltered... Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [comparison star 3UCAC 162-011987 mag.=14.60]
2013 Jan. 21.11 UT: m1=12.6 CCD, Dia.=0.5’, Tail= 1.1′ in PA: 54°... CCD images unfiltered... Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [Comparison star 3UCAC 171-013038 mag.=14.19]
2013 Jan. 19.04 UT: m1=12.1 CCD, Dia.=1.9′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 17.48 UT: m1=11.2, Dia.=2.2’, DC=5/6... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma edges diffuse and tenuous with faint broad tail to NE, 7’ in length, very transparent. Inner come slightly brighter but very small, stellar central condensation faint. Method=M... Cat=TK]
2013 Jan. 17.09 UT: m1=11.0 C CCD, Dia.=2.5′, Tail= 0.4 deg in PA: 35 deg ... 11-cm R + CCD... Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Jan. 17.07 UT: m1=12.2 CCD, Dia.=1.8′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 15.58 UT: m1=10.0, Dia.=2′, DC=3... 20-cm L f:5 (30x)... Man-To Hui (Canton, China) [city lights, fog]
2013 Jan. 13.85 UT: m1=10.0, Dia.=3′, DC=s6, Tail= 0.08° PA: 32°... 32-cm L f:5 (96x)... Uwe Pilz (Leipzig, Germany)
2013 Jan. 13.83 UT: m1=8.7, Dia.=4′, DC=5, Tail= 0.2º in AP: 50º... 25×100 B... Juan José Gonzalez (Alto de la Garandilla – Escuredo, alt. 1150m, León, España)
2013 Jan. 13.58 UT: m1=9.5, Dia.=2.1′, DC=3... 20-cm L f:5 (30x)... Man-To Hui (Canton, China) [city lights]
2013 Jan. 12.07 UT: m1=9.8, Dia.=1´,DC=2/3... 25-cm f/4.5 (66x)... Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 12.00 UT: m1=9.9 (S), Dia.=2.5′, DC=3... 22-cm L (60x)... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.98 UT: m1=10.0:, Dia.=1′, DC=5... 18-cm L (57x) ... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 11.80 UT: m1=9.7, Dia.=2,5′, DC=d3, Tai= 0.3 deg PA: 0-40deg ... 8-cm R (27x and 44x)... Gabor Santa & Viktor Horvath (Paty, Pest, Hungary)
2013 Jan. 11.78 UT: m1=9.7, Dia.=1.5′, DC=6, Tail= 0.17deg ... 50.8-cm L (78x)... Sandor Szabo
2013 Jan. 11.12 UT: m1=9.6 (S), Dia.=3.0′, DC=3... 22-cm L (60x)... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 11.00 UT: m1=9.5:, Dia.=2′, DC=5... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 09.06 UT: m1=10.8 CCD, Dia.=2.8′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 08.17 UT: m1=8.5, Dia.=5′, DC=5, Tail= 0.2 deg. in PA: 40 deg ... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2013 Jan. 08.111 UT: m1=9.5, Dia.=3′, DC=2... 25-cm f/4.5 (66x)... Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 08.47 UT: m1=8.0, Dia.=7.7’, DC=3... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, broad inner coma slightly brighter than edges, tail not visible, close to bright star. Method= S... Cat= TK]
2013 Jan. 07.81 UT: m1=8.1, Dia.=5′, DC=4, Tail= 15′... 11×80 B... Carlos Labordena (Castellón, España)
2013 Jan. 07.80 UT: m1=8.5, Dia.=5′, DC=5, Tail= 20′... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2013 Jan. 07.46 UT: m1=8.9, Dia.=7’, DC=4... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Coma small with noticeable central condensation, not stellar, tail to NE 7.3’ in length, very transparent. Method= M... Cat= TK]
2013 Jan. 07.46 UT: m1=8.1, Dia.=13’, DC=2... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, tail is not noticeable, hint of elongation of the coma to NE. Method= S... Cat= TK]
2013 Jan. 07.07 UT: m1=10.7 CCD, Dia.=2.0′... 30.5-cm SCT... Jakub Cerny (robotic telescope FRAM, Malargue, Argentina)
2013 Jan. 07.062 UT: m1=9.2, Dia.=3′, DC=3/... 25-cm f/4.5 (66x)... Gonzalo Vargas (Cochabamba, Bolivia)
2013 Jan. 06.80 UT: m1=9.1, Dia.=2′, DC=3... 16-cm Reflector (133x)... Giuseppe Pappa (Sicily, Italy)
2013 Jan. 06.46 UT: m1=8.2, Dia.=9.5’, DC=1/2... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Tail to P.A. 045, broad and diffuse, coma large and almost evenly diffuse. Method=S... Cat=TK]
2013 Jan. 06.45 UT: m1=9.0, Dia.=7.2’, DC=2/3... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Tail to P.A. 045, coma diffuse, even brightness across much of the coma with slight brightening at centre. Method=S... Cat=TK]
2013 Jan. 06.14 UT: m1=9.4 CCD, Dia.=3.0’, Tail= 4.7 PA: 45°... CCD images unfiltered... Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [comparison star Tycho 18501947 mag.=11.333]
2013 Jan. 05.45 UT: m1=8.2, Dia.=8.6’, DC=2/3... 11×70 B... Chris Wyatt (Walcha, NSW, Australia) [Tail in P.A. 045 with a length of 12.5’, tail width at extremity is approximately 10.4’. Small central condensation appears diffuse and offset to WSW, inner coma slightly brighter than coma edge, best viewed with averted vision, does not enhance with Swan Band filter. Method= S... Cat= TK]
2013 Jan. 05.45 UT: m1=8.3, Dia.=7.5′, DC=3... 11×50 B... Con Stoitsis (Clonbinane, Victoria, Australia) [Short tail 50 PA better seen with  averted vision]
2013 Jan. 05.31 UT: m1=9.3, Dia.=4′, Tail= 12′ in PA: 40... 50-cm L (60x)... Mike Linnolt (Ocean View, Hawaii) [Sky conditions pretty dark and clear, maybe some high thin cloud or vog. Tail pretty broad fan shaped.]
2013 Jan. 05.22 UT: m1=9,3, Dia.=4′, DC=6... 20×100 B... Douglas Marín (Ciudad Bolívar, Bolívar, Venezuela)
2013 Jan. 05.12 UT: m1=8.6 (S), Dia.=5′, DC=4, Tail= 10′ in PA:85º... 20X100 B... Marco Goiato (Araçatuba, Brasil)
2013 Jan. 04.93 UT: m1=9.0, Dia.=2′, DC=4... 16-cm Reflector (48x)... Giuseppe Pappa (Sicily, Italy)
2013 Jan. 04.93 UT: m1=9.5, Dia.=2′, DC=4... 16-cm Reflector (133x)... Giuseppe Pappa (Sicily, Italy)
2013 Jan. 04.50 UT: m1=8.2, Dia.=8’, DC=2/3... 11×70 B... Chris Wyatt (Walcha, NSW, Australia] [Coma large and diffuse showing tail to the NE (P.A. 045), 20’ in length and 11’ in width at its visible extremity. Method= S... Cat= TK]
2013 Jan. 04.48 UT: m1=7.9, Dia.=4.5′, DC=6... 12×80 B... Con Stoitsis (Rowville, Victoria, Australia) [Coma elongated, but I couldn’t make out the tail from my location]
2012 Jan. 04.45 UT: m1=8.7... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia)
2013 Jan. 04.45 UT: m1=8.7, Dia.=4.6’, DC=6... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Tail extends to NE, broad, more tail visible along the north-west side, inner coma bright but diffuse and offset to WSW by a small faint pseudo nucleus. Method= M... Cat= TK]
2013 Jan. 04.18 UT: m1=8,9, Dia.=5′, DC=5... 20×100 B... Douglas Marín (Ciudad Bolívar, Bolívar, Venezuela)
2013 Jan. 04.04 UT: m1=8.7, Dia.=3′, DC=4... 7-cm R (28x)... Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 04.04 UT: m1=8.9 (M), Dia.=5′, DC=5... 22-cm L (60x)... Marco Goiato (Araçatuba, Brasil) [clouds, very near a star with m1:8.1]
2013 Jan. 03.98 UT: m1=9.0 (M), Dia=5´, DC=3... 20X80 B... Jesús Guerrero (Barquisimeto, Venezuela)
2013 Jan. 03.80 UT: m1=7.9, Dia.=6′, DC=4... 10×50 B... Juan José González (Aralla, alt. 1440 m, León, España) [En 20 -cm SCT (77x): m1=8.2, m2=11.3 (Tycho-2). Coma asimétrica. Ancha cola entre 20º y 70º, de longitud 0.3º en AP 40º]
2013 Jan. 03.525 UT: m1=8.4, Dia.=4′, DC=6... 11.4-cm L f8 (22.5x)... Rob Kaufman (Bright, Vic, Australia) [Alt 18-deg. Small bright central condensation, coma elongated, tail visible in averted vision, 10-15′ in around PA 30. Slight moonlight interference. Comparison stars checked using NOMAD1 data in ViZier... Method= M]
2013 Jan. 03.50 UT: m1=8.2, Dia.=5′, DC=6... 25×100 B... Michael Mattiazzo (Castlemaine, Victoria, Australia) [Coma not enhanced with a Swan Band filter. Short dust tail in PA 20. Makes a pretty picture with M36, M37 and M38 in the vicinity]
2013 Jan. 03.46 UT: m1=8.6... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia)
2013 Jan. 03.43 UT: m1=8.3, Dia.=5.5’, DC=6... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Broad tail, very transparent, best visible using averted vision, 18’ in length and covers P.A. from 022 to 045. Inner coma bright and elongated to the NE with small faint pseudo nucleus offset to the SW. Does not enhance very well with Swan Band filter. Method= M... Cat= TK]
2013 Jan. 03.27 UT: m1=8.2 CCD, Dia.=3.0’, Tail= 5.2 PA: 43°... CCD images unfiltered... Clermont Vallière (Centre d’Observation Astronomique des Monts Notre-Dame, Québec, Canada) [ comparison star 3UCAC 242-092452 mag.=16.00]
2013 Jan. 03.15 UT: m1=8.9, Dia.=3.5′, DC=6, Broad Tail= 5′ Long PA: 45° ... 20-cm T f10 SCT & 11×80 B... Jim Pryal (Ravensdale, WA... USA) [poor seeing]
2013 Jan. 03.13 UT: m1=9.2, Dia.=4′, DC=5... 11.4-cm L f/8 (45x)... Jorge Solano (Paseo Santaluz, San José Pinula, Guatemala) [Movimiento propio fácilmente detectado después de una hora de observación continua]
2013 Jan. 03.06 UT: m1=9.0 (M), Dia.=6′, DC=5... 22-cm L (60x)... Marco Goiato (Araçatuba, Brasil) [clouds, little or no change with comet filter]
2013 Jan. 02.65 UT: m1=8.5, Dia.=4.0′, DC=6/... 30-cm Dobson... Con Stoitsis (Clonbinane, Victoria, Australia) [Conditions were good, some moon interference. Coma quite diffused, but obvious central brightening with averted vision. No tail]
2013 Jan. 02.510 UT: m1=8.9, Dia.=4′, DC=5/6... 11.4-cm L f:8 (43x)... Rob Kaufman (Bright, Vic, Australia) [Alt 13-deg. Small bright central condensation clear in averted vision... coma slightly elongated, tail not visible. Slight moonlight interference. Comparison stars checked using NOMAD1 data in ViZier... Method=M]
2013 Jan. 02.46 UT: m1=8.3, Dia.=8′, Tail= 0.3 degrees PA: 20 degrees ... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia) [Tail broad and possibly 0.5 degrees long in 25.4 reflector at 71X. Comet appeared smaller and less condensed through Swan band filter.]
2013 Jan. 02.20 UT: m1=8.5, Dia.=4.0′, DC=6, Broad Tail=8′ Long PA:35°... 20-cm T f10 SCT & 11×80 B... Jim Pryal (Ravensdale, WA... USA)
2013 Jan. 01.83 UT: m1=8.9, Dia.=4′, DC=s4... 10-cm M (48x)... Mieczyslaw Leszek Paradowski (Lublin, Poland) [Moonlight]
2013 Jan. 01.757 UT: m1=7.8, Dia.=~14′, DC=2... 10×50 B... Alex Scholten (Eerbeek, Netherlands) [altitude 40 degrees, good conditions, LM naked eye=6.0]
2013 Jan. 01.48 UT: m1=8.8, Dia.=8′, DC=5, Tail=0.13 degrees ... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia) [Faint, broad tail toward NNE direction. Comet at low elevation.]
2013 Jan. 01.47 UT: m1=8.3, Dia.=4.5’, DC=6... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma large with diffuse edges gradually brightening to centre to small, faint, stellar false nucleus, no tail visible but appears elongated to NE. Swan Band filter enhances inner coma but not false nucleus. Moonlight affected. Rapid motion observed, approximately 7’ in 30 minute period. Method=M... Cat=TK]
2012 Dec. 27.86 UT: m1=9.2, Dia.=3′, DC=3... 16-cm Reflector (133x)... Giuseppe Pappa (Sicily, Italy)
2012 Dec. 24.92 UT: m1=9.5, Dia.=3′, DC=4... 16-cm Reflector (48x)... Giuseppe Pappa (Sicily, Italy)
2012 Dec. 23.98 UT: m1=9.7, Dia.=2′, DC=4... 16-cm 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 Dec. 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... 16-cm Reflector (48x)... Giuseppe Pappa (Sicily, Italy)
2012 Dec. 16.84 UT: m1=9.2, Dia.=1.5′, DC=6, Tail= 0.08 deg.... 20-cm L (36x)... Artyom Novichonok (Konchezero, Russia) [Bright, easy visible, with tail]
2012 Dec. 15.89 UT: m1=9.4, Dia.=2.2′, DC=5... 20-cm L (36x)... Artyom Novichonok (Konchezero, Russia)
2012 Dec. 13.20 UT: m1=9.3, Dia.=0.4′, DC=6... 40-cm 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 Dec. 09.49 UT: m1=9.5, Dia.=2´, DC=6, Tail= visible... 15-cm SCT (37x), Salvador Aguirre (Hermosillo, Sonora, Mexico)
2012 Dec. 08.78 UT: m1=9.7, Dia.=3′, DC=5, Tail= 0.15 deg. in PA: 330 deg ... 20-cm 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′... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2012 Dec. 06.72 UT: m1=10.0, Dia.=1.2′, DC=5... 50.8-cm (164x)... Sandor Szabo (Sopron, Hungary) [Tail is 2’ long to the east]
2012 Dec. 05.72 UT: m1=9.8, Dia.=1′, DC=6... 32-cm L f:5 (96x)... Uwe Pilz (Leipzig, Germany)
2012 Nov. 24.78 UT: m1=9.9, Dia.=6′, DC=6/... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2012 Nov. 22.20 UT: m1=10.2, Dia.=3.5′, DC=4/, Tail= 0.1º in AP: 350º... 20-cm 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, Tail= 0.1º in AP: 20º... 20-cm 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 ... 20-cm 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 ... 20-cm 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... 20.3-cm 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/... 20-cm 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... 20.3-cm 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/... 20-cm 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... 35.6-cm 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... 35.6-cm L (133x)... Artyom Novichonok (Shadzhatmaz, Caucasus, Russia)
2012 Sep. 13.88 UT: m1=11.1, Dia.=5′, DC=3... 20-cm 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... 35-cm reflector (107x)... Jakub Cerny (Senohraby, Czech Republic)
2012 Sep. 11.74 UT: m1=12.9, Dia.=0.9′, DC=6... 35.6-cm 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... 50.8-cm L (189x)... Sandor Szabo (Sopron, Hungary) [Coma is elongated, tail is 3’ long to PA 55 deg.]
2012 Sep. 09.82 UT: m1=12.7, Dia.=0.5′, DC=7... 32-cm L f:5 (144x)... Uwe Pilz (Leipzig, Germany)
2012 Aug. 21.94 UT: m1=13.7, Dia.=0.7′, DC=6... 20-cm 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... 30-cm 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... 20.3-cm L f:6 (63x)... Piotr Guzik (Szklary, Poland) [Very clear sky. Relatively easy to see, small, moderately condensed object. Method=S... Cat=HS]
2012 July 22.96 UT: m1=14.2, Dia.=0.4′, DC=6... 20-cm 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 July 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)
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