* * * * * C/2010 G2 (Hill) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2012 2 10.69 V 12.3 UD 6.7R & 3.5 NOV Nizhniy Arkhyz (remotely) 2012 1 26.79 V 11.7 UD 6.7R 3.6 NOV Nizhniy Arkhyz (remotely) 2012 1 24.75 V 11.7 UD 6.7R 3.3 NOV Nizhniy Arkhyz (remotely) 2012 1 21.77 V 11.5 UD 6.7R 4.6 NOV Nizhniy Arkhyz (remotely) 2012 1 20.98 S 10.8 AU 22.0L 120 3 2 GOI Araçatuba 2012 1 20.69 V 11.5 UD 6.7R 4.3 NOV Nizhniy Arkhyz (remotely) 2012 1 13.72 V 10.2 UD 6.7R & 8 NOV Nizhniy Arkhyz (remotely) 2012 1 4.04 M 10.9 AU 22.0L 120 1.5 7 GOI Araçatuba (Moonlight, clouds.) 2011 12 22.81 S 9.9 TK 20.3T 77 6 2/ GON Collada del Fresno - Sierra del Aramo, Asturias 2011 12 20.50 S 11.1 GA 10.0B 25 3 SEA Cowra, NSW 2011 12 18.94 V 12.0 TK 10.9R 3.7 0.05 40 QVA Borrevannet, Horten 2011 12 14.46 S 10.7 GA 10.0B 25 4 SEA Cowra, NSW 2011 12 13.47 S 10.8 GA 25.4L 71 SEA Cowra, NSW (Supected in 25x100B but sky rapidly brightening with rising Moon. Estimate affected by brightening sky. No obvious change using Swan band filter.) 2011 12 7.20 S 9.7 TK 20.3T 77 6 3 GON Alto del Castro - Aralla, León (Several stars in coma, the brightest being mag 11.2 [TK].) 2011 11 27.851 S 10.9 TA 30.5T 73 2.2 5 DIJ Burlage 2011 11 27.849 M 10.7 TA 30.5T 73 3.5 4/ BOU Burlage, Germany 2011 11 26.80 S 9.6 TK 10.0B 25 7 3/ GON Alto del Castro - Aralla, León 2011 11 25.42 S 9.9 TJ 40.0L 36 6 3 YOS Kita-karuizawa, Gunma (Very large and diffuse as before.) 2011 11 25.17 S 10.6 TK 22.0L 160 3 3 GOI Araçatuba 2011 11 24.56 S 9.9 TJ 40.0L 36 7.2 3 YOS Kita-karuizawa, Gunma 2011 11 24.18 S 9.8 TK 20.3T 77 6 3/ GON Alto del Castro - Aralla, León 2011 11 17.89 S 10.2 TK 20.3T 77 4 3 0.2 310 GON Angliru - Sierra del Aramo, Asturias 2011 11 8.20 S 10.0 TK 20.3T 77 6 3 GON El Fito - Sierra del Sueve, Asturias (Several stars in coma, the brightest being mag 10.9 [TK].) 2011 10 29.99 S 9.7 TK 20.3T 77 6 3/ 0.2 310 GON Alto del Castro - Aralla, León 2011 10 27.31 S 10.0 TK 22.0L 160 2.5 4 GOI Araçatuba 2011 10 23.912 S 11.2 TA 30.5T 54 1.7 4 DIJ Burlage 2011 10 23.908 S 11.5 TA 30.5T 54 2.6 2/ BOU Burlage, Germany 2011 10 23.13 S 10.8 TK 20.3T 67 4.0 3 BIV Pico-Veleta, Spain 2011 10 21.91 S 10.7 TK 20.3T 67 3.0 3 BIV Pico-Veleta, Spain 2011 10 20.97 S 9.8 TK 20.3T 77 5 3/ 0.2 300 GON Alto del Castro - Aralla, León 2011 10 20.21 S 11.5:TK 20.3T 67 3.0 3 BIV Pico-Veleta, Spain 2011 10 9.17 S 10.1 TK 20.3T 77 4 3/ 0.2 310 GON Alto del Castro - Aralla, León 2011 10 8.77 S 10.7 TJ 40.0L 36 6.6 2 YOS Kita-karuizawa, Gunma (Bright and large! The condensation is unexpectedly weak. It looks diffuse, but easy to see. It is DC=4 with higher magnification [75x].) 2011 10 7.76 S 10.5 TJ 40.0L 36 5.2 3 YOS Kita-karuizawa, Gunma 2011 10 2.16 S 10.9 TK 25.6L 52 3.5 3 BIV Versailles 2011 10 1.09 S 10.3 TK 20.3T 77 4 3/ 0.1 310 GON Alto del Castro - Aralla, León 2011 9 30.095 S 12.2 TA 30.5T 117 1.2 5 BOU Burlage, Germany 2011 9 30.092 S 12.5 TA 30.5T 117 1.3 4 DIJ Burlage 2011 9 25.16 S 9.9 TK 20.3T 77 4 3 0.1 310 GON Alto del Castro - Aralla, León 2011 9 25.04 S 11.5 HS 40.7L 71 3.0 3 BIV Ambeyrac 2011 9 24.05 S 11.2 TK 40.7L 71 3.0 3 BIV Ambeyrac 2011 9 23.05 S 11.3 TK 40.7L 71 3.5 3 BIV Ambeyrac 2011 9 7.08 S 10.0 TK 20.3T 77 5 2 0.1 350 GON Alto del Castro - Aralla, León (Several stars inside the coma, the brightest being mag. 12.2 [TK].) 2011 9 3.08 S 9.8 TK 20.3T 77 5 2/ GON Pandorado, León 2011 8 28.13 S 11.9 TK 40.7L 58 2.3 3 BIV Valdeôme 2011 8 25.90 S 12.5 UD 25.4L 171 1.5 3 IVA Saratov 2011 8 25.12 S 11.5 HS 40.7L 71 2.5 2 BIV Valdeôme 2011 8 23.87 S 12.6 HS 40.7L 135 2.0 3 BIV Valdeôme 2011 8 22.84 S 12.2 HS 40.7L 135 2.0 3 BIV Valdeôme 2011 8 8.15 S 10.0 TK 20.3T 100 4 2/ GON Pandorado, León 2011 8 6.94 S 12.5 UD 25.4L 170 1.0 3 IVA Melovoe 2011 7 31.93 S 10.1 TK 20.3T 77 6 2/ 0.2 20 GON Alto del Castro - Aralla, León 2011 7 27.92 S 10.4 TK 20.3T 77 4.5 2/ 0.2 20 GON Alto del Castro - Aralla, León 2011 7 22.92 S 10.4 TK 20.3T 100 4 2/ GON Pandorado, León (Brighter than expected. 4' coma with faint outer region.) 2011 7 4.94 S 11.3 TK 20.3T 133 2.5 3 GON Alto del Castro - Aralla, León 2011 6 24.99 S 11.5 TK 20.3T 133 1.7 3 GON Alto del Castro - Aralla, León (Brighter than expected. Nearby field stars checked in DSS.) 2011 6 2.997 S 13.8 AQ 30.5T 145 0.7 2/ DIJ Burlage 2011 6 2.993 S 13.6 AQ 30.5T 145 0.8 3/ BOU Burlage, Germany 2011 5 5.86 S 14.0 UD 25.4L 270 0.5 5 IVA Saratov 2011 5 1.948 S 13.3 TA 31.0J 109 1.0 4 DIJ Burlage 2011 5 1.947 S 13.3 TA 31.0J 109 0.9 4 BOU Burlage, Germany 2011 4 26.96 S 13.2 HN 20.3T 133 1.5 6 GON Alto del Castro - Aralla, León (Elongated coma. Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near Z UMi.) 2011 3 8.040 S 14.4 AQ 31.0J 155 0.4 4 BOU Burlage, Germany (Small, somewhat condensed object. Position checked vs DSS. Slight motion detected over 15-20m. Comparison stars taken from APASS.) 2011 3 8.038 S 14.9 AQ 31.0J 155 0.4 5 DIJ Burlage 2011 3 7.12 S 14.3 HN 20.3T 133 0.7 6 GON Aralla, León (Nearby field stars checked in DSS. Motion checked over a 45-min period. Comparison stars taken from Henden photometry near UGC 10700. Mountain location, very clear sky.) 2011 2 11.12 I[14.7 HS 20.3T 222 !0.2 GON Aralla, León (Comet not observed at the ephemeris position. Nearby field stars checked in DSS.)