C/2009 K5 (McNaught)

C/2009 K5 (McNaught)
2010 Dec. 04.80 UT: m1=[14.5, Dia.=0.7′... 40-cm L f:4 (144x)... Seiichi Yoshida (Kita-karuizawa, Gunma, Japan)
2010 Oct. 18.18 UT: m1=11.3, Dia.=3′, DC=2... 20-cm SCT (100x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 Oct. 14.01 UT: m1=11.5, Dia.=3′, DC=2... 20-cm SCT (100x)... Juan José González (Pandorado, alt. 1720 m., León, España)
2010 Sep. 19.06 UT: m1=13.6 CCD, Dia.=1.6′, DC=7, Tail= 7′ in PA: 42 deg ... 41-cm L f/3.8 +CCD... Sergey Shurpakov (Belarus)
2010 Sep. 10.08 UT: m1=11.0, Dia.=2.5′, DC=2... 20-cm SCT (100x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 Sep. 05.08 UT: m1=11.0, Dia.=2′, DC=3... 20-cm SCT (100x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 Sep. 04.14 UT: m1= 11.3, Dia=2′, DC=3, no tail... 23.5-cm SCT(67x)... Carlos Labordena (Castellón, España)
2010 Aug. 20.17 UT: m1=10.8, Dia.=3′, DC=3... 20-cm SCT (77x)... Juan José González (Pandorado, alt. 1190 m., León, España)
2010 Aug. 16.92 UT: m1=12.0:, Dia.=1.2′... 25.4-cm reflector (85x)... Artyom Novichonok (Sheltozero, Russia)
2010 Aug. 15.90 UT: m1=11.6, Dia.=1.3′, DC=2/... 25.4-cm reflector (85x)... Artyom Novichonok (Sheltozero, Russia)
2010 Aug. 08.10 UT: m1=10.8, Dia.=3′, DC=4, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2010 Aug. 07.75 UT: m1=11.4, Dia.=1.0′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan) [It has faded, but still bright and visible visually]
2010 Aug. 06.91 UT: m1=10.2, Dia.=3′, DC=3/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Altura: 12º]
2010 Aug. 03.90 UT: m1=10.3, Dia.=3.5′, DC=4... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Altura: 14º]
2010 July 18.03 UT: m1=9.4, Dia.=4′, DC=4/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 July 04.96 UT: m1=9.1, Dia.=4′, DC=5... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 June 30.85 UT: m1=10.4 CCD, Dia.=2.1′, DC=6... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 June 22.08 UT: m1=8.4, Dia.=5′, DC=5/, Tail= 0.2º en AP: 20º... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 June 18.09 UT: m1=8.5, Dia.=6′, DC=5/... 20-cm SCT (77x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2010 June 17.92 UT: m1=9.9 CCD, Dia.=2.1′, DC=6... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 June 17.09 UT: m1=8.6, Dia.=4′, DC=4, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2010 June 15.187 UT: m1=8.5, Dia.=4´, DC=6, Tail= not visible... 15-cm SCT (37x), Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 June 15.07 UT: m1=8.4, Dia.=5′, DC=5/... 10×50 B... Juan José González (Alto de Carmona – Tábara, alt. 970 m., Zamora, España) [En 25x100B: Tail= 0.3º en AP::20º]
2010 June 11.165 UT: m1=8.0, Dia.=4´, DC=5, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 June 11.11 UT: m1=8.6, Dia.=4′, DC=4, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2010 June 07.04 UT: m1=8.2, Dia.=6′, DC=5/... 10×50 B... Juan José González (El Portillo – Castrocontrigo, alt. 1047 m., León, España) [En 25x100B: Tail= 0.4º en AP: 20º]
2010 June 06.83 UT: m1=10.0 CCD, Dia.=2.1′, DC=7... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 June 04.02 UT: m1=8.3, Dia.=4′, DC=6... 10×50 B... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m., León, España) [En 20 -cm SCT (77x): Tail= 0.4º en AP: 20º]
2010 May  23.10 UT: m1=8.0, Dia.=7′, DC=4, Tail= 10′... 11×80 B... Carlos Labordena (Castellón, España)
2010 May  22.09 UT: m1=8.1, Dia.=8′, DC=6... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [En 20-cm SCT (77x): Tail=  0.2º en AP: 340º]
2010 May  17.03 UT: m1=8.1, Dia.=6′, DC=6... 10×50 B... Juan José González (Cueto Rosales – Riello, alt. 1420 m., León, España) [En 20-cm SCT (77x): m1=8.5, Tail= 0.3º en AP: 310º]
2010 May  14.94 UT: m1=8.0, Dia.=7′, DC=4, Tail= 15′... 11×80 B... Carlos Labordena (Castellón, España)
2010 May  07.02 UT: m1=8.0, Dia.=8′, DC=5/... 10×50 B... Juan José González (San Mamés de Campos, alt. 840 m, Palencia, España)
2010 May  06.458 UT: m1=8.0, Dia.=4´, DC=4, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 May  05.98 UT: m1=7.9, Dia.=8′, DC=5/... 10×50 B... Juan José González (Pandorado, alt. 1190 m, León, España) [En 20-cm SCT (77x): m1=8.2]
2010 May  05.92 UT: m1=10.5 CCD, Dia.=1.4′, DC=7... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 May  03.50 UT: m1=8.3, Dia.=5.5′, DC=6/... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2010 May  02.52 UT: m1=8.5, Dia.=7′, DC=7... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2010 May  01.52 UT: m1=8.2, Dia.=7′, DC=7... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2010 Apr. 30.99 UT: m1=10.1 CCD, Dia.=1.5′, DC=7... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 Apr. 21.333 UT: m1=8.1, Dia.=5′, DC=5... 20X100 B... Marco Goiato (Araçatuba, Brasil) [altitude do cometa= 11°]
2010 Apr. 20.420 UT: m1=7.7, Dia.=5´, DC=4´, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 Apr. 19.97 UT: m1=7.9:, Dia.=7.7′, DC=4... 13-cm reflector... Artyom Novichonok (Konchezero, Russia)
2010 Apr. 18.92 UT: m1=8.2, Dia.=5.5′, DC=4... 20×80 binoculars... Artyom Novichonok (Kondopoga, Russia)
2010 Apr. 18.333 UT: m1=8.2, Dia.=4′, DC=5... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil) [altitude do cometa= 15°]
2010 Apr. 18.06 UT: m1=8.0, Dia.=6, DC=6... 20×50 B... Alfons Diepvens (Balen, Bélgica)
2010 Apr. 17.333 UT: m1=8.2, Dia.=5′, DC=4... 20X100 B... Marco Goiato (Araçatuba, Brasil) [altitude do cometa= 17°]
2010 Apr. 17.11 UT: m1=8.1 Dia.=6, DC=6... 20×50 B... Alfons Diepvens (Balen, Bélgica)
2010 Apr. 17.07 UT: m1=7.9, Dia.=7′, DC=4... 10×50 B... Juan José González (La Cruz – Lieres, alt. 520 m, Asturias, España) [En 20 -cm SCT (77x): m1=8.1. Débil Tail=  0.3º en AP: 270º]
2010 Apr. 13.76 UT: m1=7.8, Dia.=7.7’, DC=4/5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma bright, seen 5 degrees above local horizon. Comp Star= TYC 3158-2034-1... Method= S... Cat= TJ]
2010 Apr. 12.33 UT: m1=8.7, Dia.=3′, DC=6... 20×80 B... Alexandre Amorim (Florianopolis, Brazil) [alt. 17 degrees]
2010 Apr. 11.98 UT: m1=8.2, Dia.=5.2′, DC=2... 20×80 binoculars... Artyom Novichonok (Kondopoga, Russia)
2010 Apr. 11.46 UT: m1=8.0, Dia.=4´, DC=5´, Tail= not visible... 15-cm SCT (37x), Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 Apr. 11.354 UT: m1=8.3, Dia.=6′, DC=4... 20X100 B... Marco Goiato (Araçatuba, Brasil) [Crepúsculo náutico]
2010 Apr. 11.07 UT: m1=8.6, Dia.=6′, DC=4, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2010 Apr. 10.77 UT: m1=8.5, Dia.=4.8’, DC=5... 20-cm T f:10 (63x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma AP:pears elongated to SW slightly, observed in moonlight. Comp Star= TYC 3136-761-1... Method= S... Cat= TJ]
2010 Apr. 10.333 UT: m1=8.3, Dia.=5′, DC=4/... 20X100 B... Marco Goiato (Araçatuba, Brasil)
2010 Apr. 10.12 UT: m1=8.2, Dia.=6′, DC=4, Tail= 0.5º en AP: 260º... 20-cm SCT (77x)... Juan José González (Cueto Rosales – Riello, alt. 1420 m., León, España) [Amplia y débil cola]
2010 Apr. 10.07 UT: m1=8.1, Dia.=4′, DC=5... 20X50 B... Alfons Diepvens (Balen, Belgium)
2010 Apr. 09.08 UT: m1=8.2, Dia.=4′, DC=5... 20X50 B... Alfons Diepvens (Balen, Belgium)
2010 Apr. 07.10 UT: m1=8.1, Dia.=2′, DC=5... 20X50 B... Alfons Diepvens (Balen, Belgium)
2010 Apr. 05.07 UT: m1=8.1, Dia.=2′, DC=5... 20X50 B... Alfons Diepvens (Balen, Belgium)
2010 Apr. 05.04 UT: m1=8.3, Dia.=7′, DC=3... 25×100 B... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m., León, España) [En 20 -cm SCT (77x): Coma elongada en AP: 250º]
2010 Apr. 04.02 UT: m1=11.9 CCD, Dia.=0.6′, DC=7... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 Apr. 03.94 UT: m1=8.5, Dia.=7.7′, DC=4... 13-cm reflector... Artyom Novichonok (Spasskaya Guba, Russia)
2010 Mar. 30.17 UT: m1=8.8, Dia.=4′, DC=4, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2010 Mar. 27.19 UT: m1=8.5, Dia.=6′, DC=4... 20-cm SCT (77x)... Juan José González (Gulpiyuri-Naves, Llanes, alt. 20 m., Asturias, España)
2010 Mar. 25.74 UT: m1=8.1, Dia.=7’, DC=4/5... 25-cm L f:5 (x39)... Chris Wyatt (Walcha, NSW, Australia) [Inner coma seems slightly elongated to West and East, outer edge of coma faint but circular. Comp Star= TYC 1067-531-1... Method= S... Cat= TJ]
2010 Mar. 23.71 UT: m1=8.5, Dia.=6.4’, DC=4/5... 25-cm L f:5 (x39)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma slightly elongated to West. Comp Star= TYC 1067-531-1... Method= S... Cat= TJ]
2010 Mar. 20.343 UT: m1=8.9, Dia.=4′, DC=5... 2ox100 B... Marco Goiato (Araçatuba, Brasil)
2010 Mar. 19.73 UT: m1=8.2, Dia.=5.8’, DC=5... 20-cm T f:6 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma slightly elongated to SW. Comp Star= TYC 1046-380-1... Method= S... Cat= TJ]
2010 Mar. 18.72 UT: m1=8.9, Dia.=5’, DC=5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma circular, no tail, background star in coma. Comp Star= TYC 1042-2041-1... Method= S... Cat= TJ]
2010 Mar. 18.06 UT: m1=9.2, Dia.=4.6′, DC=5... 13-cm reflector... Artyom Novichonok (Konchezero, Russia)
2010 Mar. 16.72 UT: m1=8.7, Dia.=6.4’, DC=5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma circular, diffuse outer coma with gradual brightening towards centre, not quite stellar, no tail. Comp Star= TYC 476-166-1... Method= S... Cat= TJ]
2010 Mar. 15.19 UT: m1=9.1, Dia.=5′, DC=3/... 20-cm SCT (77x)... Juan José González (Aralla, alt. 1440 m., León, España)
2010 Mar. 14.16 UT: m1=10.0, Dia.=3′, DC=3, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2010 Mar. 13.333 UT: m1=9.2, Dia.=4′, DC=5... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil)
2010 Mar. 10.15 UT: m1=9.3, Dia.=4′, DC=4... 20-cm SCT (77x)... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m., León, España) [Varias estrellas en la coma, la más brillante de mag. 12.2 (GSC). Altura sobre el horizonte: 15º]
2010 Feb. 24.48 UT: m1=11.7 CCD, Dia.=0.20′, DC=8... 0.41-m f/9 Ritchey-Chretien telescope + CCD... Sergey Shurpakov (Baran’, Belarus)
2010 Feb. 21.312 UT: m1=10.4 , Dia.=1.5′, DC=4/... 22-cm L f:6.5 (160x)... Marco Goiato (Araçatuba, Brasil)
2010 Feb. 20.22 UT: m1=10.2, Dia.=2.2′, DC=3/... 20-cm SCT (77x)... Juan José González (Armada – Lena, alt. 700 m, Asturias, España) [Altura sobre el horizonte: 15º]
2010 Feb. 19.508 UT: m1=11.5, Dia.=3´, DC=3, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 Feb. 17.525 UT: m1=11.5, Dia.=3´, DC=3, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 Feb. 12.71 UT: m1=10.5, Dia.=3’, DC=2... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma larger than previous observation, diffuse, no tail, no visible central condensation, observed 9 degrees above horizon. Comp Star= TYC 5703-816-1... Method= S... Cat= TJ]
2010 Feb. 11.72 UT: m1=11.4, Dia.=1.9’, DC=3... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse with gradual brightening towards the centre, observed 11 degrees above horizon. Comp Star= GSC-5703-2365... Method= S... Cat= HS]
2010 Jan. 22.73 UT: m1=12.4, Dia.=0.7’, DC=2... 25-cm L f:5 (139x)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, averted vision, coma seems elongated NE to SW at x166. Comp Star= GSC-6276-2203... Method= S... Cat= HS]
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