* * * * * C/2013 X1 (PANSTARRS) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2016 9 28.38 S 13.3 AQ 25.0L 83 0.7 2 WYA Walcha, NSW (Coma difficult to see, very diffuse. Zodiacal light interference. Sky slightly hazy from smoke.) 2016 9 6.37 S 12.5 AQ 40.6L 165 0.8 2 CAM Warners Bay, NSW 2016 8 27.38 S 12.0 AQ 40.6L 165 1.0 2 CAM Warners Bay, NSW 2016 8 8.51 S 10.6 TK 25.0L 39 4.8 3 WYA Walcha, NSW (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 8 1.87 S 8.2 TK 20.3T 77 8 3 GON Cueto Rosales, León (Astronomical twilight. Very low altitude 6°. Comparison stars at the same altitude as the comet.) 2016 7 31.98 S 8.8 TK 22.0L 60 6 2 GOI Araçatuba 2016 7 31.40 M 9.8 TK 25.0L 39 4.2 4/ 55m 109 WYA Walcha, NSW (Outer coma diffuse and semi-transparent. Brightens to a moderately condensed centre. Coma enhances well in Swan Band filter.) 2016 7 29.46 M 10.0 TK 25.0L 39 3.8 4 41m 107 WYA Walcha, NSW (Coma centre diffuse, opaque, fading to semi-transparent outer coma.) 2016 7 28.41 M 10.1:TK 25.0L 39 3.9 3 49m 105 WYA Walcha, NSW (Magnitude uncertain due to background stars in coma. Enhances well in Swan Band filter.) 2016 7 28.04 S 8.6 TK 10.0B 20 7 2 GOI Araçatuba 2016 7 27.89 S 8.1 TK 20.3T 77 8 3 GON Alto del Castro, León (Astronomical twilight. Very low altitude 5°. Comparison stars at the same altitude as the comet.) 2016 7 27.21 S 8.5 TK 10.0B 20 8 2/ GOI Araçatuba 2016 7 25.46 S 9.6 TK 40.6L 76 4 3 CAM Warners Bay, NSW 2016 7 25.40 M 9.9 TK 25.0L 39 5.1 4/ 50m 107 WYA Walcha, NSW (Outer coma semi-opaque and increasing in brightness to a more opaque and moderately condensed centre.) 2016 7 4.17 S 7.2 TK 5.0B 7 12 3 GOI Araçatuba 2016 7 3.47 M 7.1:TK 5.0B 7 10.6 5/ WYA Walcha, NSW (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 7 3.43 S 7.5 TK 8.0R 36 7 4 CAM Warners Bay, NSW 2016 7 2.50 S 7.5 TK 8.0B 20 8 4 CAM Warners Bay, NSW 2016 7 2.40 M 7.5 TK 5.0B 7 17 5 WYA Walcha, NSW (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. 72 deg. where it is lost into the galactic plane. Coma enhances strongly in Swan Band filter.) 2016 7 1.17 S 6.9 TK 5.0B 7 15 3 GOI Araçatuba 2016 6 29.81 S 7.0 TK 8.0B 20 10 4 CAM Warners Bay, NSW 2016 6 29.47 M 7.2 TK 5.0B 7 6.8 4 WYA Walcha, NSW (Coma framed by bright stars to the N, E, S and NW. Faint tail visible 14 in length approximately in p.a. 62 deg. Coma shows faint outer coma and brightening to opaque and moderately condensed centre.) 2016 6 29.14 S 6.5 TK 5.0B 7 16 3/ GOI Araçatuba 2016 6 28.58 S 6.7 TK 8.0B 20 10 4 CAM Warners Bay, NSW 2016 6 28.51 M 7.1 TK 5.0B 7 16 4/ WYA Walcha, NSW (Coma enhances strongly in Swan Band filter. Very tenuous but short tail visible 13 in length approximately in p.a. 60 deg. 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 6 28.02 S 6.4 TK 5.0B 7 18 4 GOI Araçatuba 2016 6 27.12 S 6.4 TK 5.0B 7 18 4 GOI Araçatuba 2016 6 25.80 S 6.5 TK 8.0B 20 8 4 CAM Warners Bay, NSW 2016 6 25.41 M 6.6 TK 5.0B 7 15 4 WYA Walcha, NSW (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 7x50B but using 11x70B there appears to be a faint tail approximately 12 in length in p.a. 68 deg. Enhances strongly in Swan Band filter.) 2016 6 24.97 S 6.2 TK 5.0B 7 18 4 GOI Araçatuba 2016 6 24.80 S 6.5:TK 8.0B 20 CAM Warners Bay, NSW (Involved with 6th mag. star. Coma & DC not possible.) 2016 6 23.80 S 6.1 TK 8.0B 20 6 4 CAM Warners Bay, NSW 2016 6 15.80 S 6.2 TK 8.0B 20 15 5 CAM Warners Bay, NSW 2016 6 14.80 S 6.2 TK 8.0B 20 15 5 CAM Warners Bay, NSW 2016 6 14.15 S 6.4 TK 5.0B 7 15 4 GOI Araçatuba (Moonlight.) 2016 6 13.82 S 6.3 TK 8.0B 20 15 4/ CAM Warners Bay, NSW 2016 6 9.80 S 6.8 TK 8.0B 20 10 5 CAM Warners Bay, NSW 2016 6 8.49 M 6.7 TK 5.0B 7 20 4 WYA Walcha, NSW (Enhances strongly in Swan band filter. No tail visible. Centre is moderately condensed and appears green/blue in colour, slightly elongated to NNW.) 2016 6 8.21 S 6.4 TK 5.0B 7 15 4/ GOI Araçatuba (In 20x100B, tail 15' long in p.a. 260 degrees.) 2016 6 7.67 S 6.9 TK 8.0B 20 10 5 CAM Warners Bay, NSW 2016 6 6.80 S 7.0 TK 8.0B 20 8 5 CAM Warners Bay, NSW 2016 6 5.23 S 6.4 TK 5.0B 7 10 4 GOI Araçatuba 2016 6 3.75 S 7.9 TJ 40.0L 36 7 5 YOS Kita-karuizawa, Gunma (Hard to guide my telescope due to clouds, and the sky was getting brighter and brighter. The comet is very bright and large.) 2016 6 1.11 S 6.6 TK 5.0B 10 10 5 GON Alto del Castro - Aralla, León (Altitude 12°. Beginning of astronomical twilight.) 2016 5 29.80 S 6.8 TK 8.0B 20 10 5 CAM Warners Bay, NSW 2016 5 28.77 S 6.8 TK 8.0B 20 10 4 CAM Warners Bay, NSW 2016 5 19.79 M 7.0 TK 8.0B 20 10 5 CAM Warners Bay, NSW 2016 5 18.80 S 7.1 TK 8.0B 20 10 6 CAM Warners Bay, NSW 2016 5 15.78 S 7.0 TK 8.0B 20 8 6 CAM Warners Bay, NSW 2016 5 15.14 S 6.9 TK 5.0B 10 10 s5/ GON Cueto Rosales, León (Low altitude: 9°. Beginning of astronomical twilight. Comparison stars at the same altitude as the comet.) 2016 5 15.13 S 7.1 TK 20.3T 77 7 5 0.2 35 GON Cueto Rosales, León 2016 5 14.77 S 7.0 TK 8.0B 20 8 6 CAM Warners Bay, NSW 2016 5 14.31 S 7.3 TK 5.0B 7 8 4 GOI Araçatuba 2016 5 14.30 M 7.3 TK 10.0B 20 7 5 GOI Araçatuba 2016 5 13.75 S 6.9 TK 8.0B 20 8 5 CAM Warners Bay, NSW 2016 5 12.77 M 6.9 TK 8.0B 20 8 5 CAM Warners Bay, NSW 2016 5 11.76 S 7.0 TK 8.0B 20 8 4 CAM Warners Bay, NSW 2016 5 10.79 S 7.0 TK 8.0B 20 8 5 CAM Warners Bay, NSW (Coma was nicely condensed, with 40.6L at 76x the coma has a brighter inner disk that fades out into the outer coma.) 2016 5 9.79 S 7.5:TK 8.0B 20 7 4 CAM Warners Bay, NSW (Rushed observation due to interference from approaching clouds, m1 estimate somewhat uncertain.) 2016 5 6.78 S 7.5 TK 8.0B 20 8 5 CAM Warners Bay, NSW (In 40.6L at 76x, coma has a nice condensation, brighter disk within the coma and a short tail about 4'. At higher power 165x the central condensation is bright disk within the brighter inner coma.) 2016 5 5.79 S 7.6 TK 8.0B 20 7 5 CAM Warners Bay, NSW 2016 5 5.74 M 7.7 TK 5.0B 7 9 5/ WYA Walcha, NSW (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°.) 2016 5 4.80 S 7.6 TK 8.0R 16 6 4 CAM Warners Bay, NSW 2016 5 4.76 S 7.9 TJ 40.0L 36 5 5 YOS Kita-karuizawa, Gunma (Bright. It looks like a globular cluster.) 2016 5 4.76 M 7.6 TK 5.0B 7 8.7 6 WYA Walcha, NSW (Coma small with faint stellar central condensation. Opaque outer coma fading to edges. Enhances in Swan Band filter. Zodiacal light interference. Altitude 25.3°.) 2016 5 3.79 S 7.5 TK 8.0B 20 5 4 CAM Warners Bay, NSW (Crescent Moon [13% illuminated] about 10 degrees away from the comet.) 2016 5 2.80 M 7.4 TK 8.0B 20 4 5 CAM Warners Bay, NSW (Observation was difficult due to the Moon [21% illuminated] being only 4 degrees from the comet.) 2016 5 1.79 M 7.5 TK 8.0B 20 4 5 CAM Warners Bay, NSW (Comet is moderately condensed. Round coma with a hint of a short tail, though with the last quarter moonlight [32% Illuminated] it was difficult to be sure.) 2016 5 1.16 S 7.3 TK 20.3T 77 5 4 GON Cueto Rosales, León (Some moonlight interference. Astronomical twilight. Very low altitude: 6°. Comparison stars at the same altitude as the comet.) 2016 4 28.80 M 7.4 TK 20.3L 62 3 5 CAM Warners Bay, NSW (Comet was very close to a magnitude 7 star which made observation difficult.) 2016 4 27.78 M 7.4 TK 20.3L 62 3 5 CAM Warners Bay, NSW (Coma was well condensed with a brighter disk central to the coma. Swan filter makes the central condensation slightly brighter.) 2016 4 26.78 S 7.4 TK 20.3L 62 3 6 CAM Warners Bay, NSW 2016 4 24.79 S 7.3 TK 20.3L 62 3 5 CAM Warners Bay, NSW 2016 4 20.34 S 7.6 TK 10.0B 20 4 4/ GOI Araçatuba 2016 4 19.79 S 7.5 TK 8.0B 20 4 4 CAM Warners Bay, NSW 2016 4 18.78 S 7.4 TK 8.0B 20 3 4 CAM Warners Bay, NSW 2016 4 17.35 S 7.7 TK 10.0B 20 4 4/ GOI Araçatuba 2016 4 15.79 S 7.2 TK 8.0B 20 3 4 CAM Warners Bay, NSW 2016 4 14.79 S 7.2 TK 8.0B 20 3 4 CAM Warners Bay, NSW (Nautical twilight.) 2016 4 12.78 S 7.5:TK 8.0B 20 3 4 CAM Warners Bay, NSW 2016 2 3.81 S 8.5 TK 5.0B 10 7 5 GON Alto de la Garandilla - Escuredo, León 2016 2 3.80 S 8.7 TK 10.0B 25 5 4 0.6 60 GON Alto de la Garandilla - Escuredo, León (Zodiacal light.) 2016 2 3.756 M 8.6 TK 15.6L 24 6 3/ BOU Sint Annen 2016 1 30.765 S 8.9 TK 15.6L 29 5.5 4 BOU Sint Annen 2016 1 30.756 S 8.8 TK 8.0B 15 4.2 4 DIJ Burlage 2016 1 28.78 S 8.6 TK 20.0L 42 & 6 3 SCH Eerbeek 2016 1 28.744 S 8.9 TK 15.6L 24 5.5 3/ BOU Sint Annen 2016 1 17.774 S 8.5 TK 8.0B 15 4.5 3 DIJ Burlage (Moonlight.) 2016 1 13.866 S 8.3 TA 15.6L 24 7 2/ BOU Sint Annen 2016 1 13.755 S 9.5 TK 32.0L 56 4 3 LOO Genk 2016 1 9.40 S 8.6 TJ 40.0L 36 7 6 YOS Mt. Hanadate, Ibaraki (Very bright and large.) 2016 1 8.93 S 7.3 TK 5.0B 10 15 3 GON Sierra de Abredo - Coaña, Asturias (The comet shows a wider coma diameter with faint outer region after the recent minor outburst. Rural location, very clear sky. Altitude 23°.) 2016 1 8.857 S 8.4 TA 15.5L 29 4.6 4 DIJ Burlage 2016 1 8.779 S 8.1 TA 15.6L 24 6 3/ BOU Sint Annen 2016 1 8.76 S 8.4 TK 12.7R 50 7 3 GIL Noordwijk aan Zee 2016 1 8.76 S 8.1 TK 8.0B 15 &13 3 SCH Bussloo 2016 1 8.43 S 8.2 TJ 8.0B 20 5 4 CAM Warners Bay, NSW 2016 1 8.00 S 8.3 TK 10.0B 20 5 4 GOI Araçatuba 2016 1 7.94 S 8.2 TK 20.0L 42 & 8 1 SCH Eerbeek 2016 1 7.93 S 8.3 TK 8.0B 15 & 7 2 SCH Eerbeek 2016 1 7.81 S 8.3 TK 12.5B 30 4 4 DeS Beert 2015 12 31.881 S 10.0 TA 15.5L 36 3.6 3 DIJ Burlage 2015 12 31.878 S 10.0 TA 15.5L 36 3.6 4 BOU Burlage, Germany 2015 12 30.45 M 10.0 TK 25.0L 39 4.4 6 4m 78 WYA Walcha, NSW (Coma very diffuse and semi-opaque, brightening to centre with faint stellar central condensation. Coma pale blue in colour. Low altitude 17.8°. Sky slightly hazy.) 2015 12 29.46 S 9.0 AA 10.0B 25 5.0 SEA Cowra, NSW 2015 12 29.44 M 10.0 TK 25.0L 39 3.6 6 5m 67 WYA Walcha, NSW (Coma diffuse and semi-transparent with opaque inner coma and faint stellar central condensation. Short fan-shaped tail. Coma pale blue in colour, dims slightly in Swan Band filter. Sky Quality meter reading at zenith = 21.72 [in town, altitude = 1085m].) 2015 12 28.47 S 9.1:AA 10.0B 25 SEA Cowra, NSW (Comet close to star.) 2015 12 17.00 S 9.9 TK 22.0L 60 3 4 GOI Araçatuba (Little enhancement with Swan band filter.) 2015 12 12.47 S 9.4 AA 10.0B 25 5 SEA Cowra, NSW 2015 12 11.960 M 10.0 TA 15.6L 36 2.6 4 BOU Sint Annen 2015 12 11.80 S 8.8 TK 5.0B 10 7 3 GON Los Veneros - Sierra del Aramo, Asturias 2015 12 11.79 S 9.2 TK 10.0B 25 6 3/ GON Los Veneros - Sierra del Aramo, Asturias 2015 12 9.880 M 9.6 TA 15.5L 42 2.8 6 DIJ Burlage (12th magn star in coma.) 2015 12 9.83 S 10.1 TK 20.0L 42 3.5 4 SCH Eerbeek 2015 12 9.764 S 10.1 TA 15.6L 36 2.8 3/ BOU Sint Annen 2015 12 9.729 S 10.3 AC 32.0L 56 1.5 7 LOO Genk 2015 12 7.983 S 10.5 TA 15.5L 42 2.4 2/ DIJ Burlage 2015 12 7.920 S 10.0 AQ 15.6L 36 3 3/ BOU Sint Annen 2015 12 5.90 S 9.8 TK 20.0L 42 3.5 4 SCH Eerbeek 2015 12 4.807 S 9.9 AC 32.0L 56 1.5 6 LOO Genk 2015 12 2.958 S 10.7 TA 15.5L 42 2.0 3 DIJ Burlage (Moonlight.) 2015 12 2.48 S 9.9 AA 10.0B 25 3 SEA Cowra, NSW 2015 12 2.00 S 10.3 TK 22.0L 60 3 4 GOI Araçatuba (Little enhancement with Swan band filter.) 2015 11 30.81 S 9.4 TK 10.0B 25 5 5 GON Alto del Trichero - Soto y Amío, León 2015 11 30.80 S 9.6 TK 20.3T 77 4 4 GON Alto del Trichero - Soto y Amío, León (Asymmetric coma.) 2015 11 30.45 M 10.2 AQ 25.0L 39 3.3 5 WYA Walcha, NSW (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 11 23.22 S 9.6 TK 20.3T 77 5 3 GON Peña Nebina - Ferreruela de Tabara, Zamora (Faint outer coma. Mountain location, very clear sky.) 2015 11 23.152 M 10.7 TA 25.4J 72 1.8 4/ BOU Sint Annen (Nice view: comet only 14' from centre of NGC 891.) 2015 11 20.72 M 10.9 TJ 40.0L 75 2.0 7 YOS Kita-karuizawa, Gunma (Small, but strongly condensed and bright. It was located near open cluster M34.) 2015 11 18.945 M 10.7 AQ 25.4J 72 1.7 4/ BOU Sint Annen 2015 11 17.55 M 10.8 TA 25.0L 39 1.8 4/ WYA Walcha, NSW (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 11 12.760 M 10.9 AQ 25.4J 47 1.5 4/ BOU Sint Annen 2015 11 10.59 M 11.3 AQ 25.0L 39 1.9 4 WYA Walcha, NSW (Outer coma diffuse and semi-opaque with opaque centre, moderately condensed, pale aqua-blue in colour. Does not enhance in Swan Band filter. No tail although there appears to be an elongation to the NE approximately. At 83x the central condensation appears to be nearing DC of 6. Low altitude 13.6°.) 2015 11 7.941 M 11.0 AQ 25.4J 72 1.5 5 BOU Sint Annen 2015 11 7.84 S 10.4 TK 20.3T 77 2.5 3/ GON Alto del Cellerón - Camposagrado, León 2015 11 7.19 S 10.6 TK 22.0L 160 2 4 GOI Araçatuba 2015 11 1.85 S 10.5 TK 20.3T 77 3.5 3 GON Pandorado, León (Brighter than expected. Mag 11.8 [AQ] and 12.6 [HS] stars in coma.) 2015 10 15.06 S 11.8 AQ 20.3T 133 1.1 5 GON Alto del Castro, León 2015 10 11.855 S 12.4 AQ 30.5T 139 1.0 4/ DIJ Burlage 2015 10 11.853 S 12.6 AQ 30.5T 139 0.8 4 BOU Burlage, Germany 2015 10 11.60 S 13.1 TA 40.0L 144 0.8 6 YOS Kita-karuizawa, Gunma (Small, but very strongly condensed and easy to see. It was located near double stars.) 2015 9 21.72 S 12.5 TA 40.0L 144 1.0 4 YOS Kita-karuizawa, Gunma (Much brighter than expected.)