C/2013 X1 (PANSTARRS)

C/2013 X1 (PANSTARRS)
2016 Sep. 28.38 UT: m1=13.3, Dia.=0.7’, DC=2... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma difficult to see, no tail, very diffuse. Zodiacal light interference. Sky slightly hazy from smoke]
2016 Aug. 08.51 UT: m1=10.6, Dia.=4.8’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Moonlight (Altitude= 0.5°, 28.6% Illumination). Outer coma semi-transparent and brightening slightly to a weakly condensed centre. Tail difficult to see. Coma enhances well in Swan Band filter]
2016 Aug. 05.86 UT: m1=9.2, Dia.=5′, DC=3, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Ago. 01.87 UT: m1=8.2, Dia.=8′, DC=3... 20-cm SCT (77x)... Juan José González (Cueto Rosales, alt. 1420 m, León, España) [Crepúsculo astronómico. Muy baja altura sobre el horizonte : 6º. Estrellas de comparación a la misma altura que el cometa. Cielo muy claro de montaña]
2016 July 31.98 UT: m1=8.8, Dia.=6′, DC=2... 22-cm L (60x)... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 31.40 UT: m1=9.8, Dia.=4.2’, DC=4/... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Faint tail traced to 55’ in length in P.A. 109° approximately. Outer coma diffuse and semi-transparent brightens to a moderately condensed centre. Coma enhances well in Swan Band filter]
2016 July 29.87 UT: m1=8.9, Dia.=6′, DC=3, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 July 29.46 UT: m1=10.0, Dia.=3.8’, DC=4... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Tail visible 41.2’in length in P.A. 107°... Coma centre diffuse, opaque, fading to semi-transparent outer coma]
2016 July 28.41 UT: m1=10.1:, Dia.=3.9’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Magnitude uncertain due to background stars in coma... tail visible 49.2’in length in P.A. 105°. Enhances well in Swan Band filter]
2016 July 28.04 UT: m1=8.6, Dia.=7′, DC=2... 20×100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 27.89 UT: m1=8.1, Dia.=8′, DC=3... 20-cm SCT (77x)... Juan José González (Alto del Castro, alt. 1720 m, León, España) [Crepúsculo astronómico. Muy baja altura sobre el horizonte : 5º. Estrellas de comparación a la misma altura que el cometa. Cielo muy claro de montaña]
2016 July 27.21 UT: m1=8.5, Dia.=8′, DC=2/... 20×100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 25.40 UT: m1=9.9, Dia.=5.1’, DC=4/... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Outer coma semi-opaque and increasing in brightness to a more opaque and moderately condensed centre. Tail visible and traced to 50’in length in P.A 107°]
2016 July 09.98 UT: m1=7.8, Dia.=3.5′, DC=3... 25-cm L F/4.5 (66x)... A. Gonzalo Vargas B. (Cochabamba, Bolivia) [Se aprecia un ligero alargamiento o deformación de la coma en un ángulo AP que estimo entre 95 a 97 grados, seeing escala Antoniadi:2 ].
2016 July 05.03 UT: m1=7.3, Dia.=8′, DC=3... 10-cm R f/5 (25x)... Willian Souza (Sao Paulo, Brazil)
2016 July 04.17 UT: m1=7.2, Dia.=12′, DC=3... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 04.05 UT: m1=7.2, Dia.=10′, DC=3... 10-cm R f/5 (25x)... Willian Souza (Sao Paulo, Brazil)
2016 July 03.47 UT: m1=7.1:, Dia.=10.6’, DC=5/... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Magnitude uncertain... Coma in busy star field, difficult to extract reliable m1 value. Enhances well in Swan Band filter. Tail difficult to trace due to galactic plane]
2016 July 03.18 UT: m1=7.0, Dia.=10′, DC=3... 15×70 B... Willian Souza (Sao Paulo, Brazil)
2016 July 02.40 UT: m1=7.5, Dia.=17’, DC=5... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Semi-transparent outer coma gradually brightening to an almost stellar and opaque inner coma. Faint tail traced out to 22’in length in P.A. 072° where it is lost into the galactic plane. Coma enhances strongly in Swan Band filter]
2016 July 01.17 UT: m1=6.9, Dia.=15′, DC=3... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 01.01 UT: m1=6.8, Dia.=9′, DC=4... 25-cm L F/4.5 (66x)... A. Gonzalo Vargas B. (Cochabamba, Bolivia) [Parte de la zona central de la coma concentrada sin llegar a apariencia estelar, alargamiento o deformación de la coma en 5´de arco en un ángulo AP que estimo entre 35 a 45 grados]
2016 June 29.47 UT: m1=7.2, Dia.=6.8’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma framed by bright stars to the N, E, S and NW. Faint tail visible 14’ in length approximately in P.A. 062°. Coma shows faint outer coma and brightening to opaque and moderately condensed centre]
2016 June 29.14 UT: m1=6.5, Dia.=16′, DC=3/... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 28.51 UT: m1=7.1, Dia.=16’, DC=4/... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma enhances strongly in Swan Band filter. Very tenuous but short tail visible 13’in length approximately in P.A. 060° and about 10’ in width where it leaves the coma. Outer coma diffuse and brightening to a moderately condensed centre. Pale aqua-blue in colour]
2016 June 28.02 UT: m1=6.4, Dia.=18′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 27.12 UT: m1=6.4, Dia.=18′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 25.41 UT: m1=6.6, Dia.=15.2’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with semi-opaque outer coma and brightening to a moderately condensed centre. Coma appears slightly elongated to ENE approximately. No tail visible in the 7×50 B’s but using 11×70 B’s there appears to be a faint tail approximately 12’ in length in P.A. 068°. Coma shows a 9th magnitude star within the coma 3.6’away in P.A. 270° from coma centre. Enhances strongly in Swan Band filter]
2016 June 24.97 UT: m1=6.2, Dia.=18′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 15.14 UT: m1=6.5, Dia.=15′, DC=4... 10×50 B... Willian Souza (Marilia, Brazil)
2016 June 14.17 UT: m1=6.5, Dia.=15′, DC=3... 15×70 B... Willian Souza (Sao Paulo, Brazil)
2016 June 14.15 UT: m1=6.4, Dia.=15′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Moonlight]
2016 June 12.45 UT: m1=6.3, Dia.=10′, DC=5... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 June 09.20 UT: m1=6.4, Dia.=15′, DC=3/... 10-cm f/5 refractor (25x)... Willian Souza (Sao Paulo, Brazil)
2016 June 09.16 UT: m1=6.5, Dia.=15′, DC=3... 15×70 B... Willian Souza (Sao Paulo, Brazil)
2016 June 08.49 UT: m1=6.7, Dia.=20’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Enhances strongly in Swan band filter, no tail visible. Centre is moderately condensed and appears green/blue in colour, slightly elongated to NNW]
2016 June 08.21 UT: m1=6.4, Dia.=15′, DC=4/... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Tail= 15 arcmin in PA: 260 degrees by using 20 x 100 B]
2016 June 07.05 UT: m1=[6.4 NEGATIVE, Dia.=3.0′... 20×80 B... Marek Biely (Brno, Czech Republic) [No chance in these altitudes. Fainter than 6.4 mag. Slight interference of astronomical twilight]
2016 June 05.36 UT: m1=6.5, Dia.=10.5′, DC=5... 25-cm L F/4.5 (66x)... A. Gonzalo Vargas B. (Cochabamba, Bolivia) [Parte de la zona central de la coma muy concentrada sin llegar a apariencia estelar, alargamiento o deformación de la coma en un ángulo AP que estimo entre 265 y 270 grados].
2016 June 05.23 UT: m1=6.4, Dia.=10′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Clouds]
2016 June 05.45 UT: m1=7.0, Dia.=9′, DC=4... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 June 05.12 UT: m1=6.7, Dia.=8′, DC=5, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2016 June 03.75 UT: m1=7.9, Dia.=7′, DC=5... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2016 June 02.45 UT: m1=6.8, Dia.=8′, DC=4... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 June 01.11 UT: m1=6.6, Dia.=10′, DC=5... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Altura sobre el horizonte: 12º. Comienzo del crepúsculo astronómico. Cielo muy claro de montaña]
2016 May  29.80 UT: m1=6.8, Dia.=10′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  28.77 UT: m1=6.8, Dia.=10′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  19.79 UT: m1=7.0, Dia.=10′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  18.80 UT: m1=7.1, Dia.=10′, DC=6... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  15.78 UT: m1=7.0, Dia.=8′, DC=6... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  15.16 UT: m1=7.6, Dia.=6′, DC=4, no tail... 15-cm T (45x)... Carlos Labordena (Castellón, España)
2016 May  15.14 UT: m1=6.9, Dia.=10′, DC=s5/... 10×50 B... Juan José González (Cueto Rosales, alt. 1420 m, León, España) [En 20 cm SCT(77x): m1=7.1, Dia.=7′, DC=5, tail de polvo: 0.2º en AP: 35º. En binoculares 10×50: Baja altura: 9º. Comienzo del crepúsculo astronómico. Estrellas de comparación a la misma altura que el cometa. Cielo claro de montaña]
2016 May  14.77 UT: m1=7.0, Dia.=8′, DC=6... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  14.35 UT: m1=7.1, Dia.=7´, DC=5... 25-cm L F/4.5 (66x)... A. Gonzalo Vargas B. (Cochabamba Bolivia) [Parte de la zona central de la coma muy concentrada sin llegar a apariencia estelar, posible formación de tail en el visual a un ángulo que estimo en casi 23 grados]
2016 May  14.30 UT: m1=7.3, Dia.=7′, DC=5... 20×100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 May  14.31 UT: m1=7.3, Dia.=8′, DC=4... 7×50 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 May  13.75 UT: m1=6.9, Dia.=8′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  12.77 UT: m1=6.9, Dia.=8′, DC=5/... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  11.76 UT: m1=7.0, Dia.=8′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  10.79 UT: m1=7.0, Dia.=8.0′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [Coma was nicely condense, with 16″ F/4 Dob 76x the coma has a brighter inner disks the fades out into the outer coma]
2016 May  09.79 UT: m1=7.5:, Dia.=7′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [Rushed Observation due to interference from approaching clouds, m1 estimate somewhat uncertain]
2016 May  09.45 UT: m1=7.0, Dia.=8′, DC=5... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 May  08.17 UT: m1=7.2, Dia.=5.0′, DC=5... 10×56 B... Sandor Szabo (Hakos, Namibia)
2016 May  06.78 UT: m1=7.5, Dia.=8′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [In 16″ F/4 Dob 76x... Coma has a nice condensation, brighter disk with in the coma and a short tail about 4′. At higher power 165x the central condensation is bright disk with in the brighter inner coma]
2016 May  06.46 UT: m1=7.2, Dia.=6′, DC=5... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 May  05.79 UT: m1=7.6, Dia.=7′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 May  05.74 UT: m1=7.7, Dia.=9’, DC=5/... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma round, opaque and faint outer coma, bright diffuse inner coma with stellar central condensation in periods of good seeing. Enhances with Swan Band filter. Zodiacal light interference. Altitude = 21.1°. No tail]
2016 May  05.36 UT: m1=7.4, Dia= 6.5´, DC=4... 8-cm R (23x)... Gonzalo Vargas B. (Cochabamba Bolivia) [area rural cielo con magnitude límite visual de 6]
2016 May  04.80 UT: m1=7.6, Dia.=6′, DC=4... 8-cm R (16x)... Paul Camilleri (Warners Bay, Australia)
2016 May  04.76 UT: m1=7.9, Dia.=5′, DC=5... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2016 May  04.76 UT: m1=7.6, Dia.=8.7’, DC=6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [Coma small with faint stellar central condensation. Opaque outer coma fading to edges, enhances in Swan Band filter. No tail. Zodiacal light interference. Altitude = 25.3°]
2016 May  03.79 UT: m1=7.5, Dia.=5′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [Crescent Moon (13% illuminated) about 10 degrees away from the comet]
2016 May  02.80 UT: m1=7.4, Dia.=4′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [Observation was difficult due to the Moon (21% illuminated) being only 4 degrees from the Comet]
2016 May  02.14 UT: m1=7.6, Dia.=7′, DC=6... 10×56 B... Sandor Szabo (Hakos, Namibia)
2016 May  01.79 UT: m1=7.5, Dia.=4.0′, DC=5... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia) [Comet is moderately condense, round coma with a hint of a short tail, thou with the last quarter Moon light,(32% Illuminated) it was difficult to be sure]
2016 May  01.16 UT: m1=7.3, Dia.=5′, DC=4... 20-cm SCT (77x)... Juan José González (Cueto Rosales, alt. 1420 m, León, España) [Alguna interferencia lunar. Crepúsculo astronómico. Muy baja altura sobre el horizonte : 6º. Estrellas de comparación a la misma altura que el cometa. Cielo muy claro de montaña]
2016 May  01.14 UT: m1=7.8, Dia.=3′, DC=5... 20-cm SCT (50x)... Carlos Labordena (Desert de les Palmes, Castellón, España)
2016 May  01.01 UT: m1=7.8, Dia.=3′, DC=5, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Apr. 28.80 UT: m1=7.4, Dia.=3.0′, DC=5... 20.3-cm L (62x)... Paul Camilleri (Warners Bay, Australia) [Comet was very close to a magnitude 7 star which made observation difficult]
2016 Apr. 27.78 UT: m1=7.4, Dia.=3.0′, DC=5... 20.3-cm L (62x)... Paul Camilleri (Warners Bay, Australia) [Coma was well condensed with a brighter disk central to the coma, swan filter makes the central condensation slightly brighter]
2016 Apr. 26.77 UT: m1=7.4, Dia.=3.0′, DC=6... 20.3-cm L (61.3x)... Paul Camilleri (Warners Bay, Australia) [Comet is more condense this morning, it has a moderately bright condensation with a outer coma. Swan filter helps with the contrast of the outer coma but does not really improve the central condensation of the coma. Overall the appearance of the the comet was much improved since last observation mainly due to the decreasing Moon light]
2016 Apr. 24.79 UT: m1=7.3, Dia.=3′, DC=5... 20.3-cm L (61.3x)... Paul Camilleri (Warners Bay, Australia) [Comet was easy to observe even with the bright moon light coma was condense, swan band filter helped with  contrast on coma edge but no real improvement overall]
2016 Apr. 24.16 UT: m1=8.2, Dia.=3′, DC=3, no tail... 15-cm T (30x)... Carlos Labordena (Castellón, España)
2016 Apr. 20.34 UT: m1=7.6, Dia.=4′, DC=4/... 20×100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 Apr. 19.79 UT: m1=7.5, Dia.=4.0′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Apr. 18.826 UT: m1=8.1. Dia.=1’, DC=2... 10×50 B... Rob Kaufman (Bungle Bungles Wilderness Lodge, Purnululu National Park, Western Australia, Australia) [Small, faint diffuse spot, comet altitude 10-deg.]
2016 Apr. 18.78 UT: m1=7.4, Dia.=3′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Apr. 17.35 UT: m1=7.7, Dia.=4′, DC=4/... 20 x 100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Nautical twilight]
2016 Apr. 15.79 UT: m1=7.2, Dia.=3.0′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Apr. 14.79 UT: m1=7.2, Dia.=3.0′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Apr. 12.78 UT: m1=7.5:, Dia.=3.0′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Feb. 08.76 UT: m1=8.7, Dia.=6.5′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Feb. 06.76 UT: m1=8.6, Dia.=6′, DC=3/... 20×80 B... Maik Meyer (Limburg, Germany)
2016 Feb. 04.81 UT: m1=8.4, Dia.=7′, DC=5... 15-cm T f/5 (30x)... Carlos Labordena (Castellón, España)
2016 Feb. 04.11 UT: m1=8.6, Dia.=3′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Feb. 03.81 UT: m1=8.5, Dia.=7′, DC=5... 10×50 B... Juan José González (Alto de la Garandilla – Escuredo, alt. 1150 m, León, España) [En 25x100B: m1=8.7, Dia.=5′, DC=4, tail: 0.6º en AP 60º... Luz zodiacal]
2016 Jan. 31.10 UT: m1=9.0, Dia.=4′, DC=4... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Jan. 30.79 UT: m1=8.3, Dia.=8′, DC=5, tail: 10 arcmin ... 15-cm T f/5 (30x)... Carlos Labordena (Castellón, España)
2016 Jan. 28.78 UT: m1=8.6, Dia.=~6′, DC=3... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 26.77 UT: m1=8.8 DSLR, Dia.=7′... 1100d+300mm lens... Giuseppe Pappa (Sicily, Italy)
2016 Jan. 25.74 UT: m1=8.7, Dia.=7.5′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Jan. 25.73 UT: m1=8.9 DSLR, Dia.=8′... 1100d+300mm lens... Giuseppe Pappa (Sicily, Italy)
2016 Jan. 22.75 UT: m1=8.9:, Dia.=&5′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic) [Observation was strongly influenced by moonlight.]
2016 Jan. 21.84 UT: m1=9.5, Dia.=3′, DC=1... 30.5-cm L f/4.9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain) [Moonlight interference]
2016 Jan. 18.09 UT: m1=8.7, Dia.=4′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Jan. 16.95 UT: m1=8.5, Dia.=2′, DC=3... 20×80 B... J. P. Navarro Pina (El Ardal Mula, Murcia, Spain)
2016 Jan. 15.86 UT: m1=9.0, Dia.=2.5′ , DC=3... 20×80 B... J. P. Navarro Pina (San José de la Montaña, Murcia, Spain)
2016 Jan. 14.75 UT: m1=8.3, Dia.=7.5′, DC=5/... 20×80 B... Marek Biely (Brno, Czech Republic) [Easy target. It brightened by 1 mag within some 2 weeks. It is much more condensed and larger than before.]
2016 Jan. 10.61 UT: m1=8.5, Dia.=10′, DC=5/... 11.4-cm L (60x)... Jorge Luis Salas (San diego, Carabobo, Venezuela)
2016 Jan. 09.81 UT: m1=8.4, Dia.=6′, DC=3... 20×60 B... José J. Chambó (Vallés, Valencia, España)
2016 Jan. 09.81 UT: m1=8.4, Dia.=8′, DC=6... 11×80 B... Carlos Labordena (Castellón, España)
2016 Jan. 09.80 UT: m1=8.3, Dia.=9′, DC=5... 15.0-cm SCT (30x)... Carlos Labordena (Castellón, España)
2016 Jan. 09.73 UT: m1=8.4 DSLR, Dia.=9′... 1100d+300mm lens... Giuseppe Pappa (Mascalucia,Sicily,Italy)
2016 Jan. 09.71 UT: m1=8.5, Dia.=10′, DC=3... 7.6-cm L (35x) ... Giuseppe Pappa (Mascalucia, Sicily, Italy)
2016 Jan. 09.78 UT: m1=8.0, Dia.=15′, DC=3... 20×80 B... J. P. Navarro Pina (San Jose de la Montaña, Murcia, Spain)
2016 Jan. 09.40 UT: m1=8.6, Dia.=7′, DC=6... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Jan. 08.93 UT: m1=7.3, Dia.=15′, DC=3... 10×50 B... Juan José González (Sierra de Abredo – Coaña, alt. 450 m, Asturias, España) [Después del reciente outburst menor, el cometa muestra una más amplia coma con débil region externa. Observado desde ubicación rural, con cielo muy claro. Altura sobre el horizonte: 23º]
2016 Jan. 08.75 UT: m1=8.3 DSLR, Dia.=10′... 1100d+300mm lens... Giuseppe Pappa (Sicily, Italy)
2016 Jan. 08.72 UT: m1=7.9, Dia.=7.0′, DC=3, Tail= 025 deg. PA: 10 deg ... 7×50 B... Uwe Pilz (Leipzig, Germany)
2016 Jan. 08.72 UT: m1=8.0, Dia.=7′, DC=4/... 15.2-cm R f/5 (38x)... Maik Mayer (Limburg, Germany)
2016 Jan. 08.43 UT: m1=8.2, Dia.=5.0′, DC=4... 8-cm B (20x)... Paul Camilleri (Warners Bay, Australia)
2016 Jan. 08.00 UT: m1=8.3, Dia.=5′, DC=4... 20×100 B... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 Jan. 07.94 UT: m1=8.2, Dia.=~8, DC=1... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 07.93 UT: m1=8.3, Dia.=~7, DC=2... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 07.17 UT: m1=8.0, Dia.=9, DC=4... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Jan. 06.438 UT: m1=8.2, Dia.=7’, DC=3... 11.4-cm L f/8 (43x)... Rob Kaufman (Bright, Victoria, Australia) [Faint outer coma, brightening towards centre... tiny starlike central condensation faintly visible occasionally but general view was of a diffuse object. No tail visible. Altitude 7 deg (observation uncorrected)... light haze, some light pollution]
2016 Jan. 05.81 UT: m1=8.0, Dia.=8′, DC=5... 7.6-cm L (35x)... Giuseppe Pappa (Mascalucia, Sicily, Italy)
2016 Jan. 05.80 UT: m1=9.2, Dia.=5′, DC=4... 11×80 B... Carlos Labordena (Castellón, España)
2016 Jan. 05.80 UT: m1=9.5, Dia.=5′, DC=5... 20.0-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Jan. 05.75 UT: m1=7.9, Dia=8′, DC=5... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, Suffolk, England)
2016 Jan. 05.11 UT: m1=8.5, Dia.=3′, DC=3... 11.4-cm L F/8 (45x)... Jorge Solano (Montesano Z16, Ciudad de Guatemala)
2016 Jan. 04.833 UT: m1=8.0, Dia.=7.5′, DC=5... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England) [Significant outburst of the comet , very impressive even in a small scope. Close study advised]
2016 Jan. 03.71 UT: m1=8.8, Dia.=6.5′, DC=4... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Jan. 02.11 UT: m1=9.8, Dia.=4, DC=4... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Dec. 31.74 UT: m1=9.9, Dia.=2.3′, DC=5... 20.3-cm L f/5.9 (120x)... Mieczyslaw Leszek Paradowski (Lublin, Poland)
2015 Dec. 31.72 UT: m1=9.7:, Dia.=3.5′, DC=4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany) [comet involved w/11 mag star]
2015 Dec. 30.93 UT: m1=10.7, Dia.=2,0′, DC=3... 30,5-cm L F/4,9 (93x)... J. P. Navarro Pina (Sierra del Carrascalejo 590 mts, Murcia, Spain)
2015 Dec. 30.83 UT: m1=10.1, Dia.=2.0′, DC=5, Tail= 0.08 deg. PA: 40 deg ... 32-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Dec. 30.80 UT: m1=9.2, Dia.=4′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic) [Not very difficult to see it. Moderately condensed and fairly bright.]
2015 Dec. 30.45 UT: m1=10.0, Dia.=4.4’, DC=6... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse and semi-opaque, brightening to centre with faint stellar central condensation. Small tail visible 4’ in length in P.A. 078° approximately. Coma pale blue in colour. Low altitude = 17.8°, sky slightly hazy]
2015 Dec. 29.84 UT: m1=9.4, Dia.=5′, DC=4... 20.0-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Dec. 29.79 UT: m1=9.0, Dia.=4′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Dec. 29.73 UT: m1=10.0, Dia.=1.5′, DC=5... 20.3-cm L f/5.9 (120x)... Mieczyslaw Leszek Paradowski (Lublin, Poland)
2015 Dec. 29.46 UT: m1=9.0... Dia.=5′... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia)
2015 Dec. 29.44 UT: m1=10.0, Dia.=3.6’, DC=6... 25-cm L f:5 (x9x)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and semi-transparent with opaque inner coma and faint stellar central condensation. Short fan-shaped tail 5’ in length in P.A. 067°... coma pale blue in colour, dims slightly in Swan Band filter. Sky Quality meter reading at zenith = 21.72 (in town, altitude = 1085m)]
2015 Dec. 28.47 UT: m1=9.1... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia) [Magnitude approximate due to proximity to star]
2015 Dec. 27.72 UT: m1=9.0, Dia.=5′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 26.70 UT: m1=9.1, Dia.=5′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 17.00 UT: m1=9.9, Dia.=3′, DC=4... 22-cm L (60x)... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Little enhancement with Swan band filter]
2015 Dec. 13.83 UT: m1=9.7, Dia.=5′, DC=4... 15.0-cm SCT (30x)... Carlos Labordena (Castellón, España)
2015 Dec. 13.36 UT: m1=9.3, Dia.=4′, DC=3... 20×80 B... Man-To Hui (Joshua Tree National Park, CA, USA)
2015 Dec. 12.47 UT: m1=9.4, Dia.=5′... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia)
2015 Dec. 11.80 UT: m1=8.8, Dia.=7′, DC=3... 10×50 B... Juan José González (Los Veneros – Sierra del Aramo, alt. 1340 m, Asturias, España) [En 25x100B: m1=9.2]
2015 Dec. 09.83 UT: m1=10.1, Dia.=3.5′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 08.86 UT: m1=10.2, Dia.=3′, DC=4... 20.0-cm SCT (80x)... Carlos Labordena (Castellón, España)
2015 Dec. 08.764 TU: m1=9.8, Dia.=2′, DC=5... 11.4-cm f/8 (45x)... Neil Norman (Ipswich, England)
2015 Dec. 07.79 UT: m1=10.1, Dia.=4′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 07.70 UT: m1=9.8, Dia.=2.8′, DC=4/... 25.5-cm L (70.6x)... Danil Sidorko (Korenovsk, Russia)
2015 Dec. 06.72 UT: m1=9.9 DSLR, Dia.=3′... digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Dec. 05.90 UT: m1=9.8, Dia.=3.5′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 04.82 UT: m1=9.8, Dia.=3′, DC=s3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 04.74 UT: m1=10.3, Dia.=2.0′, DC=7... 32.0-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Dec. 04.69 UT: m1=9.8, Dia.=3.3′, DC=5... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2015 Dec. 03.78 UT: m1=10.0 DSLR, Dia.=3′... digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Dec. 03.77 UT: m1=9.2 DSLR, Dia.=3′... digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Dec. 02.69 UT: m1=9.8, Dia.=3.8′, DC=4/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2015 Dec. 02.48 UT: m1=9.9, Dia.=3′... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia)
2015 Dec. 02.00 UT: m1=10.3, Dia.=3′, DC=4... 22-cm L (160x)... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Little enhancement with Swan band filter]
2015 Dec. 01.86 UT: m1=9.1 DSLR, Dia.=3′... digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 30.81 UT: m1=9.4, Dia.=5′, DC=5... 25×100 B... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m, León, España) [En 20 cm SCT(77x): m1=9.6... Coma asimétrica]
2015 Nov. 30.72 UT: m1=9.2 DSLR, Dia.=4′... digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 30.45 UT: m1=10.2, Dia.=3.3’, DC=5... 25cm L f:5 (39x)... Chris Wyatt [Walcha, NSW, Australia) [No tail, coma elongated slightly to the East approximately, pale aqua-blue in colour, does not enhance in Swan Band filter. Outer coma diffuse and transparent gradually brightening to a small well condensed centre, not quite stellar]
2015 Nov. 29.98 UT: m1=10.2 DSLR, Dia.=3′... digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 23.22 UT: m1=9.6, Dia.=5′, DC=3... 20-cm SCT (77x)... Juan José González (Peña Nebina – Ferreruela de Tábara, alt. 970 m, Zamora, España) [Débil coma externa. Cielo muy claro de montaña]
2015 Nov. 22.44 UT: m1=10.3, Dia.=1.5′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 21.07 UT: m1=10.3, Dia.=2′, DC=3... 12.7-cm MN (61x)... Valentín Díaz (Pantano de Elche, Alicante, España)
2015 Nov. 20.72 UT: m1=10.9, Dia.=2.0′, DC=7... 40.0-cm L f/4.5 (75x)... Seiichi Yoshida (Gunma, Japan)
2015 Nov. 18.83 UT: m1=10,0, Dia.=2′, DC=s5/, Tail=7-8′... 12-cm R (100x)... Gábor Sánta (Kisújszállás, Hungary) [m2=13.0, central disk=1.2′, NELM at the comet=7.0, 73 degs. above horizon. Very assymmethric coma, effusing material to the north, turn to PA: 68 degs., make a fan-shape tail]
2015 Nov. 18.75 UT: m1=10.7, Dia.=1.5′, DC=3/... 15.2-cm R f/5 (63x)... Maik Meyer (Limburg, Germany) [not enhanced using a Lumicon Swan Band Filter]
2015 Nov. 17.55 UT: m1=10.8. Dia.=1.8’, DC=4/... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Outer coma diffuse and appears elongated to the NE. Moderately condensed centre, not quite stellar. Pale blue in colour. Does not enhance in Swan Band filter. Low altitude = 14.7°]
2015 Nov. 16.89 UT: m1=11.9, Dia.=2.5′, DC=3... 30.5 cms L f/4.9 (93x)... J. P. Navarro Pina (El Ardal Bullas 550 mts, Murcia, Spain)
2015 Nov. 15.85 UT: m1=10.3, Dia.=2, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 15.75 UT: m1=11.0 DSLR, Dia.=2′... Digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 15.74 UT: m1=11.5 DSLR, Dia.=2.5′, Digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 14.87 UT: m1=10.4, Dia.=3′, DC=3, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Nov. 13.79 UT: m1=10.6, Dia.=2, DC=3... 15.2cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 12.18 UT: m1=10.5, Dia.=1.5′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 11.88 UT: m1=11.0, Dia.=0.7′, DC=7, Tail= 1.2’ long to North... 50.8-cm L (305x)... Sandor Szabo (Sopron, Hungary)
2015 Nov. 11.83 UT: m1=10,8, Dia.=1.3’x2.5′ drop-like coma, DC=s3/... 25-cm R (200x)... Gábor Sánta (Budapest, Hungary) [m2=13.7, NELM at the comet=4.5, Suburban sky. 62 degs. above horizon]
2015 Nov. 10.23 UT: m1=10.3, Dia.=2′, DC=4... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 09.85 UT: m1=11.0, Dia.=1.5′, DC=1... 30.5-cms L F/4.9 (93x)... J. P. Navarro Pina (El Ardal 550 mts, Bullas, Murcia, Spain)
2015 Nov. 08.88 UT: m1=11.3, Dia.=1.5′, DC=2... 30.5-cms L F/4.9 (120x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Nov. 07.84 UT: m1=10.4, Dia.=2.5′, DC=3/... 20-cm SCT (77x)... Juan José González (Alto del Cellerón – Camposagrado, alt. 1190 m, León, España)
2015 Nov. 07.768 UT: m1=10.9, Dia.=1.5′, DC=2... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Nov. 07.19 UT: m1=10.6, Dia.=2′, DC=4... 22-cm L (160X)... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2015 Nov. 06.92 UT: m1=11.3, Dia.=2′, DC=4... 25-cm L (67x)... Valentín Díaz (La Romaneta, Alicante, España)
2015 Nov. 05.89 UT: m1=11.4, Dia.=1.2′, DC=4/... 20-cm L (80x)... Artyom Novichonok (Chalna fields, Russia)
2015 Nov. 03.89 UT: m1=10.8, Dia.=3′, DC=3, no tail... 20cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Nov. 03.87 UT: m1=10.0, Dia.=4′, DC=3, no tail... 20-cm B (50x)... Carlos Labordena (Castellón, España)
2015 Nov. 03.81 UT: m1=11.3, Dia.=1.1′, DC=4/... 20-cm L (80x)... Artyom Novichonok (Konchezero station, Russia)
2015 Nov. 02.89 UT: m1=11.5, Dia.=2′, DC=3... 30.5-cm L f/4.9 (120x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Nov. 02.77 UT: m1=11.5... 25.5-cm L (46.2x)... Uwe Pilz (Leipzig, Germany)
2015 Nov. 01.85 UT: m1=10.5, Dia.=3.5′, DC=3... 20-cm SCT (77x)... Juan José González (Pandorado, alt. 1190 m, León, España) [Más brillante que lo previsto. Estrellas en la coma de magnitudes 11.8 (APASS) y 12.6 (GSC)]
2015 Oct. 24.06 UT: m1=11.2, Dia.=1.7′, DC=–, Tail= 0.04 deg. PA: 0 deg ... 32.0-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Oct. 18.90 UT: m1=12.2 DSLR, Dia.=1′, DC=7... Digital reflex+0.3-m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 15.06 UT: m1=11.8, Dia.=1.1′, DC=5... 20-cm SCT (133x)... Juan José González (Alto del Castro, alt. 1720 m, León, España) [Estrellas de comparación tomadas de la fotometría APASS cercana al cometa]
2015 Oct. 11.60 UT: m1=13.1, Dia.=0.8′, DC=6... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2015 Oct. 08.94 UT: m1=12.0 DSLR, Dia.=1′, DC=6... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 03.81 UT: m1=10.2, Dia.=3′, DC=4... 25×100 B... Mieczyslaw L. Paradowski (Lublin, Poland)
2015 Sep. 28.48 UT: m1=12.4: CCD, Dia.=&1.0′... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.) [interference by Moon: Moon phase 1.00, altitude 24 deg.]
2015 Sep. 25.45 UT: m1=12.8, Dia.=0.9′, DC=5... 35.5-cm (162x)... Carl Hergenrother (Tucson, AZ, USA)
2015 Sep. 21.72 UT: m1=12.5, Dia.=1.0′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2015 Sep. 17.92 UT: m1=12.5: DSLR, Dia.=&0.8′... 0.20-m f/4 reflector + DSLR camera... Taras Prystavski (Lviv, Ukraine) [Red light pollution zone, Bortle sky class=6]
2015 Sep. 15.47 UT: m1=12.8 CCD, Dia.=1.0′... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.)
2015 Sep. 13.03 UT: m1=13.3, Dia.=0.8′, DC=5... 50.8-cm L (189x)... Sandor Szabo (Sopron, Hungary)
2015 Aug. 23.89 UT: m1=13.9 DSLR, Dia.=0.8′... Nikon 5200 + 200-mm lens... Artyom Novichonok (Konchezero, Russia)
2015 Aug. 19.95 UT: m1=13.9 CCD, Dia.=0.43′, Tail=0.4′ in PA: 4 deg.... 0.08-m f/7.5 refractor + CCD... A. Novichonok, T. Prystavski (Konchezero Stn., Republic of Karelia, Russia)
2015 Aug. 15.05 UT: m1=14.8, Dia.=0.4′, DC=3... 60.3-cm L (305x)... Sandor Szabo (Sopron, Hungary)
2015 Apr. 17.10 UT: m1=15.1: CCD, Dia.=&0.3′, Tail=&0.5′ in PA 54 deg... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.) [evening twilight]
2015 Mar. 18.83 UT: m1=14.8, Dia.=0.3′, DC=5... 50.8 cm L (307x)... Sandor Szabo (Sopron, Hungary)
2015 Mar. 16.88 UT: m1=15.3 CCD + R filter, Dia.=29″, DC 4, Tail=1′ in PA: 55-93 deg ... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 Mar. 11.88 UT: m1=15.4 CCD, Dia.=0.5′, Tail=0.7′ in PA 81 deg ... [T16] 0.15-m f/7.3 refractor + CCD... A. Novichonok & T. Prystavski (AstroCamp Observatory, I89 remotely from Nerpio, Spain)
2015 Mar. 01.28 UT: m1=14.9: CCD, Dia.=&0.5′... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.) [interference by Moon: Moon phase 0.83, altitude 50 deg.]
2015 Jan. 16.09 UT: m1=15.7 CCD, Dia.=0.3′... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.)
2014 Dec. 19.99 UT: m1=15.8 CCD, Dia.=0.4′, Tail=0.3′ in PA: 78 deg ... [T16] 0.15-m f/7.3 refractor + CCD... A. Novichonok & T. Prystavski (AstroCamp Observatory, I89 remotely from Nerpio, Spain)
2014 Nov. 25.48 UT: m1=16.3 CCD, Dia.=0.24′... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)