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* * * * * C/2011 L4 (PANSTARRS) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2013 10 13.40 S[12.6 TA 40.0L 257 !0.5 YOS Kita-karuizawa, Gunma 2013 10 12.41 S[12.9 TA 40.0L 144 !1.1 YOS Kita-karuizawa, Gunma 2013 10 11.42 S[12.6 TA 40.0L 144 !0.9 YOS Kita-karuizawa, Gunma (Already too faint to see.) 2013 9 24.84 S 13.6 HS 40.7L 135 1.2 4 BIV 2013 9 5.89 S 13.1 HS 40.7L 135 1.4 3 BIV 2013 9 4.94 S 13.0 HS 40.7L 135 1.5 3 BIV 2013 9 4.892 S 12.6 AQ 30.5T 73 2.3 4 DIJ Burlage 2013 9 4.891 S 12.8 AQ 30.5T 73 2.0 2 BOU Burlage, Germany 2013 8 12.89 S 12.3 HS 40.7L 58 1.5 3 BIV 2013 8 10.98 S 12.1 HS 40.7L 58 1.8 4 0.06 75 BIV 2013 8 6.940 S 11.8 AQ 25.4J 72 2.2 2/ BOU Sint Annen 2013 8 6.92 S 12.7 AQ 32.6L 182 1.5 3 GUZ Osławica (Faint and diffuse, but easily visible. Excellent conditions.) 2013 8 5.95 S 13.1 AQ 32.6L 182 1 4 GUZ Krosno (Only faintly seen because of light pollution.) 2013 8 5.90 S 12.0 TK 40.7L 58 1.8 3 0.07 80 BIV 2013 8 3.912 S 11.6 AQ 30.5T 73 2.2 3 BOU Burlage, Germany 2013 8 3.910 S 11.4 AQ 30.5T 73 1.4 3/ DIJ Burlage 2013 8 3.88 S 12.0 TK 40.7L 58 2.0 3 0.07 75 BIV 2013 8 2.88 S 11.8 TK 40.7L 58 1.8 5 0.07 75 BIV 2013 8 1.88 S 12.2 TK 40.7L 58 2.0 5 0.06 85 BIV 2013 8 1.00 S 10.3 TK 20.3T 77 4 3/ GON Alto del Castro - Aralla, León (The comet shows a wider coma diameter, providing a brighter m1 estimate in comparison with my previous Jul. 18.06 observation.) 2013 7 31.97 S 11.7 TK 40.7L 58 2 3 0.08 90 BIV 2013 7 30.93 S 11.7 TK 40.7L 58 2.5 3 0.1 90 BIV 2013 7 29.88 S 11.6 TK 40.7L 58 2.3 3 0.1 100 BIV 2013 7 25.88 S 11.4 TK 40.7L 72 2.5 4 BIV 2013 7 18.06 S 10.8 TK 20.3T 77 3 4 GON Alto del Castro - Aralla, León 2013 7 17.975 S 11.1 AQ 25.4J 58 3 2 BOU Sint Annen 2013 7 12.988 S 10.8 TA 15.5L 42 2.3 2 DIJ Burlage 2013 7 11.93 S 11.1 TK 40.7L 58 2.5 3 0.1 90 BIV 2013 7 8.966 S 10.8 AQ 25.4J 58 2.7 2/ BOU Sint Annen 2013 7 8.962 S 10.7 TA 15.5L 42 4 2/ DIJ Burlage 2013 7 6.967 S 10.7 TA 25.4J 58 2.7 3 BOU Sint Annen 2013 7 6.960 S 10.6 TA 15.5L 42 4.2 3/ DIJ Burlage 2013 7 5.971 S 10.8 TA 25.4J 58 2.9 2/ BOU Sint Annen 2013 7 5.95 S 10.8 TK 40.7L 58 3 4 0.17 80 BIV 2013 7 4.93 S 11.0 TK 40.7L 58 2 3 BIV 2013 7 2.94 M 10.8 AQ 32.6L 50 3 4 GUZ Pcim 2013 7 1.01 S 10.1 TK 20.3T 77 4 4 0.2 90 GON Alto del Castro - Aralla, León (Fanned dust tail, 0.2-deg in p.a. 90 deg.) 2013 6 17.969 S 10.4 TK 15.5L 42 2.3 3 DIJ Burlage 2013 6 15.992 S 10.3 TK 15.5L 29 3.2 3 DIJ Burlage 2013 6 15.97 S 10.0 TK 40.7L 58 3 3 0.15 135 BIV 2013 6 15.04 S 9.8 TK 10.0B 25 3 6 0.2 120 GON Alto del Castro - Aralla, León (Fanned dust tail, 0.2-deg. in p.a. 120 deg. Fainter antitail 0.3-deg. in p.a. 350 deg.) 2013 6 15.03 S 10.2 TK 20.3T 77 2.5 5 0.2 120 GON Alto del Castro - Aralla, León 2013 6 14.975 S 9.8 TK 15.6L 29 3.5 3 BOU Sint Annen 2013 6 14.97 S 10.0 TK 40.7L 72 3 3 0.1 150 BIV 2013 6 14.938 S 10.0 TK 32.0L 57 2 4 LOO Genk 2013 6 12.94 M 9.3 TT 32.6L 50 4 4/ 0.3 140 GUZ Czuszów (Very bright and large. Both, the dust tail and antitail (~0.4 deg. long) easily visilble. There also seems to be some nebulosity between the tail and antitail.) 2013 6 12.93 S 8.9 TT 5.0B 10 5 3 0.3 140 GUZ Czuszów (Still easily visible in 10x50B under very dark skies. Broad fan-shaped tail spanning from p.a. 100 deg. to 130 deg. Thin antitail ~0.7 deg. long in p.a. 340 deg. also visible, though much harder than previously.) 2013 6 11.958 S 10.0 TK 15.5L 42 3.5 3 DIJ Burlage 2013 6 10.954 S 9.9 TK 15.5L 29 3.5 3/ DIJ Burlage 2013 6 7.923 S 9.7 TK 32.0L 57 2 4 LOO Genk 2013 6 7.02 S 9.9 TK 40.7L 58 3.5 4 0.7 0 BIV 2013 6 7.014 S 9.5 TK 32.0L 57 3 4 LOO Genk 2013 6 6.970 S 9.5 TK 15.6L 36 3 3 BOU Sint Annen 2013 6 6.966 S 9.5 TK 15.5L 29 3 3/ 0.2 175 DIJ Burlage (Antitail 1 deg. in p.a. 0 deg.) 2013 6 5.970 S 9.3 TK 15.5L 29 3.5 4 0.1 180 DIJ Burlage (Antitail 0.8 deg. in p.a. 0 deg.) 2013 6 5.931 S 9.4 TK 32.0L 57 3 4 LOO Genk 2013 6 4.974 M 9.2 TK 15.6L 24 3.8 4 0.8 0 BOU Sint Annen (Antitail faint and diffuse, but still quite long.) 2013 6 4.947 S 9.5 TK 15.5L 29 3.5 4 0.2 175 DIJ Burlage (Also antitail 0.9 deg. in p.a. 10 deg.) 2013 6 4.94 S 9.5 TK 40.7L 72 3 4 0.5 5 BIV 2013 6 4.04 M 8.9 TK 10.0B 25 4 5 0.6 150 GON Alto del Castro - Aralla, León (Fanned dust tail 0.6-deg in p.a. 150 deg. Antitail 2.4-deg in p.a. 0 deg.) 2013 6 3.964 S 9.4 TK 15.5L 29 3 4 0.15 185 DIJ Burlage (Also antitail 1 deg. in p.a. 10 deg.) 2013 6 3.938 S 9.2 TK 32.0L 57 3 4 LOO Genk (Oval shaped coma with onset of tail. Very faint north pointing antitail 0.5 deg. long.) 2013 6 3.010 S 9.2 TK 32.0L 57 3 4 LOO Genk (Oval shaped coma. Antitail nearly 1 degree long.) 2013 6 2.98 S 9.2 TK 5.0B 7 5 4 1.5 10 BIV 2013 6 2.97 S 9.8 TK 40.7L 72 3.5 5 1.8 5 BIV 2013 6 2.951 S 9.4 TK 15.5L 29 3.5 3/ 0.2 185 DIJ Burlage (Also antitail 1 deg. in p.a. 10 deg.) 2013 6 2.017 S 9.0 TK 32.0L 57 3.5 4 LOO Genk (Oval shaped coma. North pointing antitail visible over 0.5 deg.) 2013 6 1.968 M 9.3 TK 15.6L 29 3.5 3/ 0.25 170 BOU Lauwersoog (Broad, short dusttail. Faint antitail could be followed over about 1.8 deg. in p.a. 15 deg.) 2013 6 1.963 S 9.2 TK 15.5L 29 3.5 4 0.8 10 DIJ Burlage 2013 6 1.95 S 8.7 TT 5.0B 10 5 4 0.5 175 GUZ Chyrowa (Easily visible in 10x50B under very dark skies. At least 3.2 deg. long thin antitail visible in p.a. 10 deg.) 2013 5 31.93 M 8.7 TK 10.0B 25 4 5 0.5 185 GON Los Barrios de Nistoso, León (Fanned dust tail: 0.5-deg in p.a. 185 deg. Antitail: 3.9-deg in p.a. 15 deg.) 2013 5 30.963 S 9.3 TK 15.5L 29 3.2 3 0.2 205 DIJ Burlage (Also antitail 1.8 deg. in p.a. 30 deg.) 2013 5 28.98 S 9.9 TK 25.6L 42 2.5 4 2.8 45 BIV 2013 5 28.97 S 8.5 TK 5.0B 7 12 3 5.5 45 BIV 2013 5 28.92 M 8.5 TK 10.0B 25 4 5 0.6 220 GON Llamas de Rueda, León (Estimate made before moonrise. Fanned dust tail 0.6-deg. in p.a. 220 deg. Well defined thin antitail, 5.1-deg in p.a. 40 deg., also observable in 10x50B.) 2013 5 27.920 S 9.1 TK 32.0L 57 4 4 LOO Genk 2013 5 27.916 S 8.9 TK 15.5L 29 3 3 1.4 50 DIJ Burlage 2013 5 27.91 S 9.6 TK 10.0R 54 2.5 4 0.2 50 GIL Katwijk aan Zee 2013 5 26.92 S 10.0 TK 40.7L 72 2.5 5 0.5 40 BIV 2013 5 25.91 S 9.8 TK 40.7L 72 3 4 0.4 40 BIV 2013 5 23.96 S 9.3 TK 40.7L 58 3 4 0.5 75 BIV 2013 5 22.940 S 8.6 TK 15.5L 29 3 4 DIJ Burlage (Moonlight.) 2013 5 19.055 S 9.0 TK 32.0L 57 3 4 LOO Genk 2013 5 19.00 S 8.2 TT 5.0B 10 4 4 0.5 300 GUZ Biórków Mały (Observed after moonset, just before the beginning of astronomical twilight. Broad tail spanning from p.a. 290 deg. to 95 deg., about 0.5 deg. long in p.a. 300 deg. At least 1.8 deg. long thin antitail easily visible in p.a. 90 deg.) 2013 5 18.05 S 9.0 TK 40.7L 58 3 4 0.5 95 BIV 2013 5 18.05 S 8.8 TK 5.0B 7 4 3 0.3 300 BIV 2013 5 15.91 S 8.1 TK 10.0B 25 6 5 0.6 310 GON Alto del Trichero - Soto y Amío, León (In 25x100B, fanned dust tail spanning from 300 deg. to 100 deg. Well defined antitail-like feature in sunward direction, 1.1-deg in p.a. 90 deg., also observable in 10x50B.) 2013 5 15.907 S 8.5 TK 15.5L 29 3 4 0.2 300 DIJ Burlage 2013 5 15.90 S 7.9 TK 5.0B 10 6 4 0.4 310 GON Alto del Trichero - Soto y Amío, León 2013 5 15.00 S 8.1 TT 5.0B 10 4 5 0.5 315 GUZ Boleszówka (Still easily visible in binoculars. The main tail fainter and more diffuse than previously but still about 0.5 degree long in p.a. 315 deg. and very broad, spanning from p.a. 305 deg. to 100 deg. Thin antitail now at least as bright as the brightest part of "main" dust tail and at least 1.5 deg. long. Very good conditions, stars up to magnitude 7.0 visible to the naked eye in the comet's vicinity.) 2013 5 13.909 S 8.4 TK 15.5L 29 3 4 0.2 300 DIJ Burlage 2013 5 12.901 S 8.3 TK 15.5L 29 3 4/ 0.3 305 DIJ Burlage 2013 5 12.09 S 8.4 TK 5.0B 7 8 4 0.5 120 BIV 2013 5 11.02 S 7.9 TK 5.0B 10 5 4/ 0.6 320 GON Alto del Castro - Aralla, León (In 20-cm SCT at 77x, fanned tail spanning from 300 deg. to 110 deg.) 2013 5 10.90 S 8.5 TK 40.7L 58 3 5 0.5 110 BIV 2013 5 10.89 S 8.0 TK 5.0B 7 8 4 0.5 120 BIV 2013 5 10.052 S 8.1 TK 10.0B 14 3.5 5 LOO Genk 2013 5 9.910 M 8.4 TK 15.6L 24 3 4/ 0.35 320 BOU Sint Annen 2013 5 9.885 S 8.3 TK 15.5L 29 3.5 4 0.2 315 DIJ Burlage 2013 5 8.910 S 8.1 TK 15.5L 29 3 5 0.5 325 DIJ Burlage 2013 5 7.042 S 8.2 TK 10.0B 14 4 4 LOO Genk 2013 5 6.909 S 8.2 TK 15.5L 29 3.5 4/ 0.2 320 DIJ Burlage 2012 5 6.009 M 8.2 TK 15.5L 24 3 4/ 0.3 320 BOU Burlage, Germany 2013 5 6.009 S 8.2 TK 15.5L 24 4 4/ 0.2 320 DIJ Burlage 2013 5 5.85 M 7.8 TT 5.0B 10 4 5 0.5 325 GUZ Moszczaniec (Very broad fan-shaped dust tail spanning from p.a. 310 to 100 deg. The tail was longest [~30'] in p.a. ~325 deg. Brighter streak [~30'] was also readily visible in p.a. 90 deg.) 2013 5 4.963 S 8.1 TK 15.5L 29 2.8 4 0.2 315 DIJ Burlage 2013 5 4.938 S 8.1 TK 10.0B 14 4 4 LOO Genk 2013 5 4.935 M 8.0 TK 15.6L 24 3 4/ 0.3 325 BOU Sint Annen (Very broad dusttail, longest 0.3 deg. in p.a. 325 deg., but spanning from p.a. 315 to 105 deg.) 2013 5 3.903 S 7.9 TK 15.5L 29 4 4 0.2 320 DIJ Burlage 2013 5 3.90 S 7.3 TK 5.0B 10 5 4/ 0.4 330 GON Puerto de Aralla, León (In 20-cm SCT at 77x, fanned tail spanning from 310 deg. to 100 deg.) 2013 5 2.99 M 7.8 TK 8.0R 20 4 4/ GRA Risløkka, Oslo (Also clearly visible in 10x50B at same m1. Solar alt. -14° [all-night twilight], NEL = 5.0 - 5.5.) 2013 5 2.906 M 7.9 TK 15.6L 24 3 5 0.3 340 BOU Sint Annen (Very broad dusttail, longest 0.3 deg. in p.a. 340 deg., but spanning from p.a. 335 to 110 deg.) 2013 4 30.97 M 7.8 TK 8.0R 20 4 4/ GRA Risløkka, Oslo 2013 4 30.886 M 7.7 TK 15.5L 24 3 5 0.35 340 BOU Burlage, Germany 2013 4 30.885 S 7.6 TK 15.5L 24 3 4 0.3 320 DIJ Burlage 2013 4 29.900 M 7.6 TK 15.6L 24 3 5/ 0.35 340 BOU Sint Annen (Very broad dusttail, longest 0.35 deg. in p.a. 340 deg., but spanning from p.a. 325 to 110 deg.) 2013 4 29.899 S 7.6 TK 8.0B 15 3.6 4 0.3 334 DIJ Burlage 2013 4 29.89 S 7.8 TK 6.0B 20 3.0 4 0.4 315 GIL Noordwijk aan Zee 2013 4 28.910 S 7.5 TK 8.0B 15 2.8 3 0.5 322 DIJ Burlage 2013 4 28.91 M 7.2 TK 5.0B 10 4 5 0.4 340 GON Ardoncino, León (In 20-cm SCT at 77x, fanned tail spanning from 330 deg. to 100 deg.) 2013 4 28.897 M 7.5 TK 15.6L 29 3.5 5/ 0.4 330 BOU Sint Annen (Dusttail is a fairly broad fan, longest 0.4 deg. in p.a. 330 deg.) 2013 4 27.896 S 7.4 TK 8.0B 15 3 3 DIJ Burlage (Comet close to 8th magn star.) 2013 4 27.876 M 7.5 TK 15.6L 24 3.5 6 0.25 340 BOU Sint Annen 2013 4 25.03 S 8.0 HV 40.7L 72 3 5 0.3 330 BIV 2013 4 25.02 S 7.4 TK 5.0B 7 5 5 BIV 2013 4 25.01 M 7.7 TK 8.0R 20 4 5 0.2 340 GRA Risløkka, Oslo 2013 4 25.01 M 7.6 TK 5.0B 10 4 4 0.2 340 GRA Risløkka, Oslo (Faint in 10x50B, clearly seen in 8.0-cm R. Full Moon, NEL = 4.8.) 2013 4 23.86 S 7.7 HV 40.7L 58 3 5 0.2 335 BIV 2013 4 23.85 S 7.1 TK 5.0B 7 5 4 BIV 2013 4 22.097 S 7.1 TK 8.0B 15 4 3/ 0.3 345 BOU Groningen 2013 4 22.07 M 6.8 TT 5.0B 10 5 6 0.8 345 GUZ Biórków Mały (Observed around moonset, shortly after the beginning of astronomical twilight. Stars up to magnitude 6.5 [or maybe even a bit fainter] visible to the naked eye in the comet's vicinity. Comet visible with naked eye as an elliptical object of size 10'x15' and integrated magnitude a bit brighter than 6.0. In 10x50B, very broad fan-shaped dust tail spanning from p.a. 325 to 90 deg. The tail was longest [~50' long] in p.a. ~345 deg. Brighter streak >20' long was also readily visible in p.a. ~80 deg.) 2013 4 21.12 S 7.5 TK 5.0B 7 5 5 0.7 345 BIV 2013 4 21.106 M 6.9 TK 8.0B 15 4 3 0.3 340 DIJ Burlage 2013 4 21.093 M 7.0 TK 8.0B 15 4 3/ 0.4 340 BOU Groningen 2013 4 20.85 S 6.9 TK 8.0R 16 4.0 5 0.4 350 GIL Noordwijk aan Zee 2013 4 20.11 M 6.9 TK 5.0B 10 5 6 0.5 350 GON Puerto de Aralla, León (In 20-cm SCT at77x, fanned tail spanning from 330 deg. to 100 deg.) 2013 4 20.105 S 6.8 TK 5.0B 10 3 7 0.4 LOO Genk 2013 4 20.097 M 6.9 TK 8.0B 15 4 4 0.7 345 BOU Groningen 2013 4 20.01 M 6.9 TK 5.0B 10 5 4 0.5 350 GRA Risløkka, Oslo 2013 4 19.15 S 7.5 HV 40.7L 58 4 5 0.4 345 BIV 2013 4 19.14 S 7.1 HV 5.0B 7 7 5 0.5 340 BIV 2013 4 19.094 S 6.8 TK 8.0B 15 4.5 4 0.4 345 BOU Groningen 2013 4 18.857 M 6.9 TK 8.0B 15 3 3 0.5 345 DIJ Burlage (Some interference from first quarter Moon.) 2013 4 17.098 M 6.6 TK 8.0B 15 4 4 0.3 350 BOU Groningen 2013 4 16.86 S 7.0 HV 5.0B 7 7 4 0.5 350 BIV 2013 4 16.105 M 6.7 TK 8.0B 15 4 4/ 0.4 0 BOU Groningen 2013 4 15.88 S 6.8 HV 5.0B 7 8 5 BIV 2013 4 15.043 S 6.3 TK 5.0B 10 4 8 0.6 10 LOO Genk 2013 4 14.968 aM 6.5 TK 8.0B 15 3 5 0.7 355 BOU Groningen 2013 4 14.917 M 6.6 TK 8.0B 15 3 4 0.8 350 DIJ Burlage 2013 4 14.90 S 6.5 HV 5.0B 7 7 5 BIV 2013 4 13.97 M 6.1 YG 5.0B 10 4 5 0.5 355 GRA Risløkka, Oslo (Coma and inner tail still quite bright but fainter than the central part of M31. Observed at altitude 22° one hour after lower culmination. From my home location in a clear but moderately light polluted and hazy sky [NEL = 5.2].) 2013 4 13.82 M 6.0 TT 5.0B 10 4 6 1 350 GUZ Dosłońce 2013 4 12.88 S 6.7 HV 5.0B 7 5 5 BIV 2013 4 12.857 M 6.5 TK 8.0B 15 3.5 4 0.7 350 DIJ Burlage 2013 4 11.86 M 5.8 TK 5.0B 10 5 6 0.8 0 GON Dosango, Asturias (In 25x100B, fanned tail spanning from 340 deg. to 40 deg. Low altitude: 10°. Rural location, clear sky.) 2013 4 11.07 M 5.8 TT 5.0B 10 4 6 1.3 0 GUZ Czuszów (Easily visible with naked eye. I could see stars up to about 6.5 mag in the comet's vicinity. With the naked eye the comet looked like almost homogenous, equilateral triangle with a side ~1 deg. long. The integrated magnitude of coma and tail was much brighter than 5.0 mag, probably even close to 4.0 mag. The comet was nearly as prominent as nearby [but situated a few degrees lower] M31 galaxy. In 10x50B, very broad fan-shaped dust tail spanning from p.a. 350 to at least 90 deg. Short [20'] rather thin III-type dust trail[?] also visible at the southern edge of the main dust tail [p.a. ~90 deg.].) 2013 4 10.93 M 5.9 YG 5.0B 10 4 5 0.6 5 GRA Steinbruvann, Oslo (Comet near lower culmination, altitude 18°. Cloud interference and hazy, comet not close to naked eye visibility. NEL = 5.0 [approx].) 2013 4 9.97 M 5.7 YG 5.0B 10 4 5 0.8 355 GRA Steinbruvann, Oslo (Just visible to naked eye. In 10x50B, coma similar to M92 and M13 in apparent size and brightness, respectively. Alt. 18°. From lake Steinbruvann [elevation 256 meters]. NEL = 5.5.) 2013 4 8.87 M 5.5 YG 5.0B 10 4 5/ 1.5 0 GRA Åneby (With naked eye, not bright but well seen. Comet was fainter than the Double and Praesepe clusters. Using 10x50B, broad tail, western edge sharp, eastern part diffuse. Excessive defocusing gave "total" mag. 4.7 [YG]. Dark sky, NEL near 6.5 at best. Altitude 18°, solar altitude -17°.) 2013 4 8.17 B 6.0 HV 5.0B 7 6 5 1.0 355 BIV 2013 4 8.09 I 5.1:TT 0.0E 1 7 0.7 5 GUZ Czuszów 2013 4 8.08 M 5.4 TT 5.0B 10 4 6 1.3 5 GUZ Czuszów (Easily visible with naked eye. I could see stars up to 6.1 mag in the comet's vicinity. The comet looks as bright as M31. In 10x50, very broad fan-shaped dust tail spanning from p.a. 355 to at least 100 deg. Short [15'] rather thin III-type dust trail[?] also visible at the southern edge of the main dust tail [p.a. ~100 deg.].) 2013 4 7.88 M 5.6 YG 5.0B 10 4 5/ 1.5 5 GRA Åneby (With naked eye, clearly seen but only when the sky had become sufficiently dark. Formal observation made at the end of astronomical twilight. Comet appeared somewhat fainter than the Double Cluster and brighter than M31. Altitude 17°. Observed from near Åneby, about 25 km north of Oslo. Some cloud interference, otherwise favourable conditions. NEL = 6.0-6.5.) 2013 4 7.839 M 5.7 TK 8.0B 15 4 1.7 356 DIJ Burlage 2013 4 7.79 S 5.2 YG 7.0R 10 6 7 0.4 0 YOS Mt. Tsukuba, Ibaraki (Finally, I could see Comet PanSTARRS. It looks very small, but looks cool with a broad tail. I enjoyed the comet with Andromeda Galaxy in the same field of view.) 2013 4 7.19 B 5.5 HV 0.0E 1 15 5 BIV 2013 4 7.18 B 5.9 HV 5.0B 7 6 5 0.6 355 BIV 2013 4 7.146 S 5.9 TK 5.0B 10 2 8 0.25 2 LOO Genk 2013 4 6.852 M 5.3 TK 5.0B 10 4/ 1.5 351 DIJ Burlage 2013 4 6.849 M 5.4 YG 5.0B 10 6 1.0 BOU Burlage, Germany (Broad fanning dusttail from p.a. 355 to 60 deg. Still very faintly visible naked eye.) 2013 4 6.82 aS 5.9:TK 8.0R 16 2.0 7 1.0 0 GIL Noordwijk aan Zee 2013 4 6.18 S 5.0 HV 0.0E 1 10 4 BIV 2013 4 6.16 S 5.9 HV 5.0B 7 5 6 1.0 0 BIV 2013 4 5.84 M 5.4 YG 5.0B 10 4 6 1.0 10 GRA Kalbakken, Oslo (Observed at alt. 18° in twilight [solar alt. -13°]. From my work location. NEL = 5.0 [approx.].) 2013 4 3.90 M 4.9 YG 5.0B 10 3 6/ 1.5 10 GRA Steinbruvann, Oslo (With naked eye, clearly seen and brighter than nearby M31. Using 10x50B, broad and fan-shaped tail spanning about 90 deg. Altitude 12°. Slightly hazy. NEL = 5.5.) 2013 4 2.91 M 4.8 YG 5.0B 10 3 6 1.5 5 GRA Steinbruvann, Oslo (Well seen with naked eye. Altitude 10°. NEL approx 5.5.) 2013 4 2.835 M 4.6 YG 5.0B 10 6/ 1.6 10 BOU Sint Annen (Comet also faintly visible naked eye below M31.) 2013 4 2.833 M 4.8 TK 5.0B 10 5/ 2 356 DIJ Burlage 2013 4 2.832 M 4.6 TK 5.0B 10 7 & 1.5 COM Roden (Comet showing nice fan-tail, sharply defined at the westside and more diffuse at the eastern side.) 2013 4 2.82 B 5.2 HV 5.0B 7 5 6 BIV 2013 4 2.802 S 5.0 TK 5.0B 10 2 8 0.2 LOO Genk 2013 4 2.094 S 4.7 TK 5.0B 10 2 8 0.3 LOO Genk (Moonlight. Altitude 6°.) 2013 4 1.87 M 4.5 YG 5.0B 10 3.5 6/ 1.5 10 GRA Steinbruvann, Oslo (Easily seen with naked eye. Using 10x50B, fan-shaped tail spanning approx. 90 deg. Altitude 11°. Clear sky, but some light pollution [NEL = 5.5 - 6.0]. Observed during a "star walk".) 2013 4 1.833 M 4.4 HI 5.0B 10 6/ 1.8 20 BOU Sint Annen (Comet is a fine view in 10x50B south of and just in same field with M31. Broad fan-tail from p.a. 5 to 100 deg., brightest and sharply defined along the western edge, but becoming very faint and diffuse on the eastern side. Longest some 1.8 degrees towards p.a. 20 deg.) 2013 4 1.816 M 4.5 TK 8.0B 15 5/ 2 7 DIJ Burlage 2013 4 1.813 S 4.5 TK 5.0B 10 2 8 0.35 358 LOO Genk 2013 4 1.81 aS 4.9:TK 8.0R 16 2.0 7 1.5 340 GIL Noordwijk aan Zee (Comp. stars σ, ρ and θ And.) 2013 4 1.81 S 4.8 HV 5.0B 7 5 6 1.5 0 BIV 2013 4 1.18 B 4.9 HV 5.0B 7 5 6 BIV 2013 3 31.84 I 4.3 YG 0.7E 1 6 2 5 GRA Hakadal (An easy naked eye object. Brightness estimate refers to the apparent central condensation that should agree well with the m1 magnitude. Binoculars were not available for this observation. Altitude 12°, solar altitude -16°. Dark sky.) 2013 3 31.83 aS 4.8:TK 6.0B 20 2.0 7 1.0 355 GIL Noordwijk aan Zee (Comp. stars σ, ρ and θ And.) 2013 3 31.824 S 4.4 TK 8.0B 15 6 2 355 DIJ Burlage (Tail is still very curved. Comet made a nice view near M31.) 2013 3 30.84 B 4.0 YG 0.7E 1 GRA Hakadal 2013 3 30.84 M 4.2 YG 5.0B 10 3 6/ 2.5 10 GRA Hakadal (With naked eye, easily visible as an diffuse object, similar to Pleiades in angular extent [about 1.5 deg.]. somewhat brighter and larger than the Double Cluster and Praesepe. Comparable to the view of 17P/Holmes when seen more than a month after its major eruption in 2007. The integrated magnitude of C/2011 L4 was about 3.0, tabulated magnitude refers to coma and some of the inner tail. Using 10x50B, the head appeared parabola-shaped and showed a false nucleus that was less distinct and bright as compared to until a few evenings ago. The comet showed a very broad tail, spanning from about p.a. 0 to 90 deg. Its brightest part was the western component that was easily seen for 1.0 deg. Formal observation made at alt. 12° and with the Sun 16° below the horizon. Clear and dark sky [NEL near 6.5 at best].) 2013 3 30.81 aS 4.7:TK 6.0B 20 2.0 7 1.0 10 GIL Noordwijk aan Zee (Comp. stars σ, ρ and θ And.) 2013 3 30.81 M 4.4 TK 5.0B 10 3.5 7 1.3 10 GON Granja de Moreruela, Zamora (In 25x100B, fanned tail spanning from p.a. 0 deg. to 50 deg. Low altitude: 12°, solar elongation: 31°. Nautical twilight. Rural location, clear sky.) 2013 3 29.84 M 4.1 YG 5.0B 10 4 6 2.5 15 GRA Hakadal (Easily seen to naked eye as a diffuse glow. In 10x50B, tail appeared diffuse and fan-shaped and spanning about p.a. 10 to 100 deg. Formal observation made at alt. 12° and Solar alt. -16°. Dark sky [NEL 6-6.5 at best], but interference from high clouds.) 2013 3 29.83 B 4.0 TK 5.0B 7 7 1 SKI Tegneby (With naked eye, not seen due to thin clouds, but clearly visible the previous evening. In 7x50B, tail seen for one deg. and for over two deg. on Mar 28. Comparison stars were &delta: And, π And [combined] and σ And. Altitude of comet was 12°.) 2013 3 28.82 M 3.9 YG 5.0B 10 3 6/ 2.0 15 GRA Røverkollen, Oslo (With naked eye, clearly visible as a light pillar pointing upwards. Brighter than M31 that was also seen without optical aid. In 10x50B, the comet showed a fan-shaped tail spanning about 70 deg. The eastern part of tail appeared faint and diffuse. Formal observation obtained shortly before moonrise in a quite dark sky [NEL approx. 5.5]. Altitude of comet was 13° and Sun 13° below the horizon.) 2013 3 28.79 sM 4.0 TT 5.0B 10 5 7 0.8 15 GUZ Muchówka 2013 3 27.82 M 3.7 HV 5.0B 10 3 7 2.0 15 GRA Røverkollen, Oslo (Still faint to naked eye, but easier than during the previous nights due to a more rural location [400m elevation] and with the Moon low in the opposite part of the sky [NEL approx. 5.0]. With 10x50B, the comet [coma and inner tail] still appeared much brigher than the central part of M31. Formal observation made at alt. 13°. Comparison stars were δ And and γ Ari.) 2013 3 27.812 wM 3.9 TK 5.0B 10 6/ 2.3 15 DIJ Nansum, The Netherlands 2013 3 27.809 M 4.0 HI 5.0B 10 7 1.5 20 BOU Sint Annen (Near full Moon low in the east. Comp. stars δ And and ε And.) 2013 3 26.81 M 3.6 HV 5.0B 10 3 7 1.5 25 GRA Kalbakken, Oslo (Just seen to naked eye despite an almost full Moon. In 10x50B, the pseudo-nucleus estimated as mag. 5.0 [TK]. Comet and comparison stars at a similar altitude [13°]. From my work location.) 2013 3 26.810 aM 3.7 HI 5.0B 10 7 1.7 20 BOU Burlage, Germany (Strong moonlight. Comp. stars δ And, ε And and γ Ari.) 2013 3 26.809 wM 3.5 TK 5.0B 10 6/ 2.0 20 DIJ Burlage 2013 3 26.806 S 3.6 TK 5.0B 10 2 8 0.5 LOO Genk 2013 3 26.80 aS 4.1:TK 5.0B 10 2.5 7 0.4 23 GIL Noordwijk aan Zee (Comet at 13.1° altitude, comp. star ε And at 13.8° and δ And at 15.1°. Sky lit by 99% illuminated Moon.) 2013 3 25.81 M 3.4 HV 5.0B 10 3 7 1.5 20 GRA Kalbakken, Oslo (Using 10x50B, the coma showed an apparently stellar pseudo-nucleus of mag. 4.8 [TK]; excessive defocusing [method "B"] gave "total" mag. 3.0 [TK]. The comet was at alt. 11°, comp. stars at a similar altitude. From my work location.) 2013 3 25.797 wM 3.2 TK 5.0B 10 7 2.2 23 DIJ Burlage 2013 3 24.82 M 3.5 TK 5.0B 10 3 7 1.5 25 GRA Risløkka, Oslo (Comet [alt. 9°] and comp. stars were at a similar altitude. From my home location.) 2013 3 24.804 aM 3.2 HI 5.0B 10 8 1.8 25 BOU Sint Annen (Comet strongly condensed and well visible at 10° altitude despite bright moonlight. Comp. stars δ and ε And. Fairly broad, slightly curved dusttail, longest about 1.8 deg. in p.a. 25 deg.) 2013 3 24.77 aI 3.5 TT 5.0B 10 4 8 1.2 40 GUZ Słomniki 2013 3 24.76 aI 3.4 TT 0.0E 1 4 8 0.3 30 GUZ Słomniki (The comet was slightly brigther than η Psc and significantly fainter than α And. Still relatively easy to see with naked eye. The transparency of the sky was not as good as on previous occasions.) 2013 3 23.806 wM 3.0 TK 6.0B 15 7 1.5 28 DIJ Groningen, The Netherlands 2013 3 23.80 M 3.3 TK 5.0B 10 3 7/ 1.5 25 GRA Risløkka, Oslo (Using 10x50B, comet observed at alt. 11°, the comp. stars were at a similar altitude. From my home location.) 2013 3 23.76 wI 3.3 TT 5.0B 10 4 7/ 1.8 40 GUZ Słomniki (Broad dust tail spannning from p.a. 20 deg. to 80 deg.) 2013 3 23.76 wI 3.1 TT 0.0E 1 4 8 0.5 40 GUZ Słomniki (The comet was clearly brighter than η Psc and significantly fainter than α And. Clearly seen with naked eye though a bit harder than six days ago.) 2013 3 22.81 B 2.8 YG 0.7E 1 7 0.5 SKI Hønefoss 2013 3 22.81 M 3.1 TK 5.0B 10 3 7/ 1.5 30 GRA Kalbakken, Oslo (With 10x50B, the comet [alt. 8°] was 0.6 mag. brighter than η Psc at same alt. From my work location.) 2013 3 21.802 wM 2.9 TK 8.0B 15 4 8 2 35 DIJ Burlage (Comp. stars α And and η Psc. Condensed coma and a nice curving tail. Also seen with naked eye.) 2013 3 21.80 !M 2.8 YG 5.0B 10 3 7/ 1.5 30 GRA Fetsund (Using 10x50B, the comet [alt. 9°] appeared 1.0 mag. fainter than α And [alt. 13°], some correction for extinction. Observed from R. Skartlien's "Quantum Cafe" observatory after an astronomy meeting.) 2013 3 21.80 aS 2.2:TK 5.0B 10 3.0 8 0.4 30 GIL Noordwijk aan Zee (Comet at 9.6° altitude, comp. star α And at 12.3° and δ And at 17.7°. Sky lit by 69% illuminated Moon.) 2013 3 21.797 M 2.8 HI 5.0B 10 7 1.5 40 BOU Sint Annen (In 10x50B, fine object with a small, strongly condensed coma and a slightly curving dusttail. Despite moonlight also faintly visible naked eye. Main comp. star δ Cyg at same altitude as the comet.) 2013 3 20.82 wI 2.7 TK 0.0E 1 3 8/ 0.5 35 GON La Union de Campos, Valladolid 2013 3 20.81 wM 3.1 TK 5.0B 10 2.5 8 0.7 35 GON La Union de Campos, Valladolid (In 25x100B, fanned tail spanning from p.a. 30 deg. to 80 deg., 1.7-deg in p.a. 35 deg. Low altitude 10°, solar elongation 21°. End of nautical twilight. Some moonlight interference.) 2013 3 20.80 S 3.2 HV 5.0B 7 3 7 1.0 45 BIV 2013 3 20.76 wI 2.6 TT 0.0E 1 4 8 1 50 GUZ Skawinki (Comet easily seen with naked eye. In 10x50B the dust tail was very broad, spanning from p.a. 30 deg. to 100 deg. and significantly curved to the left. I could trace it to about 2.5 degrees. Faint, thin, straight ion (?) tail was also visible in p.a. 30 deg., approx. 1.5 degrees long. The sky was transparent and pretty dark - in 10x50B stars up to magn. 7.5 were seen in comet vicinity.) 2013 3 18.82 B 2.5 HV 0.0E 1 3 0.5 50 BIV 2013 3 18.80 B 2.9 HV 5.0B 7 2 8 1.5 50 BIV 2013 3 18.80 !S 2.4 YG 5.0B 10 3 7/ 1.5 45 GRA Alunsjøen (With 10x50B, the coma appeared strongly condensed and the dust tail could be traced for nearly 1.5 deg. The coma [alt. 5.2°] appeared slightly brighter [0.1-0.2 mag] than η Peg [alt. 7.5°]. The comet was only seen for a few minutes before setting below the local horizon, but that was enough to secure images and a formal observation. The sky was clear and transparent. Observed from the shore of lake Alunsjøen [elev. 240m].) 2013 3 17.81 wI 2.2 TK 0.0E 1 3 8/ 0.5 55 GON Camposagrado, León (In 25x100B fanned tail spanning from p.a. 45 deg. to 70 deg., 1.5-deg in p.a. 55 deg. Low altitude 8°, solar elongation 18°.) 2013 3 17.81 S 2.2:YG 5.0B 10 2 8 0.5 GRA Hakadal (The comet was hidden behind clouds until few minutes before setting. Using 10x50B, it appeared clearly brighter than γ Peg [approx. 0.6 mag.] when the star was seen at the same altitude [2.8°], thus no correction for extinction.) 2013 3 17.74 wM 1.8 TT 5.0B 10 3 7 2.5 55 GUZ Krosno (Very broad dust tail, spanning from p.a. 45 deg. to ~110 deg, at least 2.5 deg long in p.a. 55 deg. Northern edge of the tail gently curved and sharp, southern much more diffuse and shorter - about 0.5 deg. in p.a. 110 deg. Comet easily seen with naked eye for more than half an hour.) 2013 3 17.74 wI 1.8 TT 0.0E 1 3 8 1 55 GUZ Krosno 2013 3 16.74 aM 1.9 TT 5.0B 10 3 7 2 65 GUZ Krosno (Broad dust tail ~2 degree long. Comet easily seen with naked eye, much brighter than nearby γ Peg [mag. 2.8].) 2013 3 16.73 aI 1.7 TT 0.0E 1 3 8 0.5 65 GUZ Krosno 2013 3 15.80 B 2.0 HV 0.0E 1 2 9 0.5 55 BIV 2013 3 15.79 B 2.3 HV 5.0B 7 2 8 2.5 60 BIV 2013 3 14.81 wM 1.8 TK 5.0B 10 2.5 7/ 0.3 70 GON Morriondo, León (Very low altitude 6°, solar elongation 16°.) 2013 3 14.81 B 1.9 HV 0.0E 1 3 8 0.5 BIV 2013 3 14.79 S 2.1 HV 5.0B 7 1 8 1.0 70 BIV 2013 3 14.78 aS 1.8:TK 5.0B 10 3.0 8 0.5 70 GIL Noordwijk aan Zee (Comet at 6.3° altitude, comp. star γ Peg at 9.9°.) 2013 3 14.774 aI 1.2:TK 8.0B 15 8 >0.5 80 DIJ Burlage (Comet strongly condensed with more then half a degree of dusttail.) 2013 3 14.771 aM 1.5:HI 5.0B 10 8 BOU Zuidwolde (Only briefly visible in twilight before sinking into cloud. Comparison stars β and η Peg.) 2013 3 14.77 !S 1.7 YG 5.0B 10 2 8 0.5 60 GRA Kalbakken, Oslo (Faintly visible to naked eye. Using 10x50B, the coma [alt. 5°] appeared 0.4 mag. brighter than γ Peg [alt. 10°]. The tail appeared curved in anti-clockwise direction. Observed from my work location.) 2013 3 14.09 aI 0.2 YF 0.7E 1 9 1.0 55 KEE Mt. Thorodin, Colorado (Comet easily visible with naked eye at altitude of 3 degrees. Comparison star at 28°, used ICQ average table for 2.7 km elevation for a 1.8 magnitude extinction adjustment.) 2013 3 13.77 !S 1.9 YG 5.0B 10 1 8 0.4 70 GRA Røverkollen, Oslo (Using 10x50B, the comet showed an almost star-like coma and a fairly broad dust tail. It was seen from 18h59m until it set 55 min later [at true altitude -0.1 deg]. Formal obs. made at alt. 2.8° and solar alt. -10.2°. The comet appeared 1.0 mag. brighter than α Peg [alt. 2.1 deg;. For this and my other observations I have assumed an extinction coefficient of 0.15 mag per airmass. Despite favourable conditions the comet was not visible to naked eye. Observed from the hill Røverkollen [elevation 400 meters].) 2013 3 12.84 wI 0.6 YF 0.7E 1 9 DAH Roque de los Muchachos, La Palma, Spain (The comet was visible to the naked eye for a period of less than five minutes between gaps in cirrus clouds at an altitude of 3°. Comparison star was α And.) 2013 3 12.767 wM 1.4:HI 8.0B 15 7/ 0.5 85 BOU Zuidwolde (Comet easily visible in bright twilight only 6½ degrees from a very thin, 22.5-hour old, lunar crescent. Strongly condensed with about half a degree of dusttail visible. To reduce effects of altitude correction the main comparison star γ Cyg was observed nearly 10 mimutes later.) 2013 3 11.84 wI 0.9 YF 0.7E 1 9 DAH Roque de los Muchachos, La Palma, Spain 2013 3 11.83 wS 1.0 YF 6.3B 9 1.5 9 0.7 90 DAH Roque de los Muchachos, La Palma, Spain (The comet was visible to the naked eye as a stellar object; no tail was seen. In 9x63B, a very intense, nearly stellar "pseudo-nucleus" was located at the tip of the parabolic-shaped coma. The comet was observed at an altitude of 4° and magnitude estimates were corrected for extinction using the ICQ winter tables: comparison star was α And.) 2013 3 10.93 sI -0.1 HD 0.0E 1 9 GOI Araçatuba 2013 3 10.93 sM 0.2 HD 5.0B 7 5 8 0.5 80 GOI Araçatuba (Yellow dust tail 0.5 degree in p.a. 80 deg., civil twilight, comet altitude 5°, sun altitude -8° clouds.) 2013 3 10.77 aM 1.4 TK 5.0B 10 2.5 8 0.3 90 GON Llanfranc, Girona (Not visible with the naked eye. Very low altitude: 3°. Solar elongation 15°. The comet remained observable in 10x50B for 15 minutes in nautical twilight, showing a short dust tail. Near sea level location. Clear sky down to the horizon.) 2013 3 10.380 aM -0.3 TK 5.0B 7 2 8 WYA Walcha, NSW (Tail visible to 15’ in length to the ESE. Observation made it twilight, cloud in vicinity but not interfering. Comet altitude 1.3°. Visible naked eye, central condensation appeared white in colour through 7x50B. Extinction correction likely too large.) 2013 3 7.94 sI -0.3 HD 0.0E 1 8/ 0.5 110 GOI Araçatuba (Dust tail 0.5 degrees in p.a. 110 deg., civil twilight, comet altitude 5°, sun altitude -11°, clouds.) 2013 3 7.94 sM 0.1 HD 5.0B 7 6 8 1 110 GOI Araçatuba (Yellow dust tail 1 degree in p.a. 110 deg., civil twilight, comet altitude 5°, sun altitude -11°, clouds.) 2013 3 7.388 aM 1.6 TK 5.0B 7 7/ WYA Walcha, NSW (Tail to the SE, 1.8 degrees in length. Twilight affected, altitude 3.8°.) 2013 3 6.93 sI -0.2 HD 0.0E 1 9 GOI Araçatuba 2013 3 6.93 sM 0.2 HD 5.0B 7 4 8 0.3 120 GOI Araçatuba (Yellow dust tail: 0.3 degrees in p.a. 120 deg., civil twilight, comet altitude 8°, sun altitude -7°, clouds.) 2013 3 6.41 I 1.7 0.0E 1 9 SEA Cowra, NSW (Main comparison used was β Ceti, given as m = 2. Comparison made between remembered image of comet and star when latter was at same altitude. "Correction" for brighter sky background of comet little more than a guess.) 2013 3 6.395 wM 1.8 TK 5.0B 7 8 WYA Walcha, NSW, (Tail to SE, 1.5 degrees in length. Twilight affected, altitude 1.9°. The central condensation appears white through 7x50B but deep yellow/reddish in colour using 11x70B.) 2013 3 5.41 I 1.8 AA 0.0E 1 9 SEA Cowra, NSW 2013 3 5.395 aM 1.1 TK 5.0B 7 7 WYA Walcha, NSW (Tail visible to around 1 degree in length to the SE. Slightly curved to the South, coma stellar in appearance with slight haze surrounding a white pseudo nucleus. Tail was tinged yellow in colour near the coma but faded to a more orange colour near the tip. Altitude 3.0°, twilight affected.) 2013 3 4.41 I 2.0 AA 0.0E 1 9 1.5 SEA Cowra, NSW (Tail visible to approx. 3 degrees in 15x80B.) 2013 3 3.94 sM 1.4 HD 5.0B 7 5 7/ 0.5 140 GOI Araçatuba (Yellow dust tail 0.5 degrees in p.a. 140 deg., nautical twilight, comet altitude 6°, sun altitude -12°.) 2013 3 3.41 I 2: AA 0.0E 1 SEA Cowra, NSW (Very small and intense coma, appearing stellar to NE and nearly stellar in 25x100B, where a spectacular dust tail was visible to at least two degrees. Tail visible NE in twlight to 0.5 - 1 degee.) 2013 3 2.94 sI 1.8 HD 5.0B 7 4 7/ 0.3 150 GOI Araçatuba (Yellow dust tail 0.3 degrees in p.a. 150 deg., nautical twilight, comet altitude 4°, sun altitude -13°.) 2013 3 1.95 sM 2.1 HD 5.0B 7 4 7 0.25 150 GOI Araçatuba (Yellow dust tail 0.25 degrees in p.a. 150 deg., nautical twilight, comet altitude 3°, sun altitude -13°.) 2013 2 15.73 S 5.0 AA 0.0E 1 SEA Cowra, NSW 2013 2 14.73 I 5.0 AA 0.0E 1 SEA Cowra, NSW (Appeared as a slightly nebulous and probably slightly elongated 'star' with naked eye.) 2013 2 13.74 I 5.3 AA 0.0E 1 SEA Cowra, NSW 2013 2 12.74 S 5.5 AA 3.5B 6 SEA Cowra, NSW 2013 2 11.74 S 5.8 AA 3.5B 6 SEA Cowra, NSW 2013 2 11.72 10.0B 25 3.0 7 & 1 235 SEA Cowra, NSW 2013 2 10.72 I 5.7 AA 0.0E 1 SEA Cowra, NSW (Tail intensity more even as observed with 25x100B, giving less of a forked appearance to tail.) 2013 2 8.73 I 5.7 AA 0.0E 1 SEA Cowra, NSW (Tail visible in 6x30 binoculars.) 2013 2 8.72 S 5.7 AA 3.5B 6 SEA Cowra, NSW 2013 2 7.73 S 5.9 AA 3.5B 6 SEA Cowra, NSW (Moonlight less of a problem. Comet glimpsed naked eye at about magnitude 5.9.) 2013 2 6.75 S 6.1 AA 3.5B 6 SEA Cowra, NSW (Up to 0.5° of tail visible in 25x100B. Tail forked, with brightest segment curving strongly northward.) 2013 2 5.32 sM 5.9 TK 5.0B 7 5 6 0.3 200 GOI Araçatuba (Moonlight interference, clouds, comet altitude 10°.) 2013 1 25.33 S 7.2 TK 5.0B 7 5 4 GOI Araçatuba (Nautical twilight, sun altitude -13°, comet altitude 17°.) 2013 1 25.32 M 7.3 TK 10.0B 20 4 7 0.25 240 GOI Araçatuba (Astronomical twilight, comet altitude 14°.) 2013 1 23.32 M 7.3 TK 10.0B 20 5 6 GOI Araçatuba 2013 1 21.73 S 7.5 TK 8.0B 20 3 4 CAM Warners Bay, NSW 2013 1 21.72 S 7.3 AA 5.0B 10 SEA The Entrance, NSW (Strongly condensed in 25x100B.) 2013 1 20.32 S 7.4 TK 10.0B 20 5 4/ GOI Araçatuba 2013 1 19.73 S 7.6 TK 10.0B 25 2 7 MAT Castlemaine, VIC (In 20-cm reflector, comet displays a bright dust tail about 7' long in p.a. 280 deg.) 2013 1 18.31 M 7.4 TK 10.0B 20 5 5 10m 260 GOI Araçatuba 2013 1 16.73 S 7.9 TK 10.0B 25 2 7 MAT Castlemaine, VIC (Well condensed with a short dust tail in p.a. 280 deg. Globular cluster NGC 6541 in same field of view appeared significantly brighter.) 2013 1 15.74 S 8.0 TK 8.0B 20 5 5 CAM Warners Bay, NSW 2013 1 11.72 S 8.2 AA 10.0B 25 4 7 SEA The Entrance, NSW (Little changed through Swan Band filter, though possibly slightly fainter.) 2012 12 27.32 S 8.0:TK 10.0B 20 2 4 GOI Araçatuba (Nautical twilight, comet altitude 9°, sun altitude -12°. Comparison stars at the same altitude.) 2012 10 30.40 S 10.0:TK 20.3L 40 1.5 5 BIV 2012 10 14.94 S 10.1 TK 22.0L 160 2 2 GOI Araçatuba 2012 9 13.44 S 11.3 GA 25.4L 71 SEA Cowra, NSW (Attempted to observe with 25x100 binocular telescope, but did not see it with certainty.) 2012 9 12.46 S 11.3 GA 25.4L 71 SEA Cowra, NSW 2012 9 9.43 S 11.4 GA 25.4L 71 3 2 SEA Cowra, NSW 2012 8 21.86 S 9.5 TK 20.3T 77 6 2/ GON Alto del Castro, León (Wide elongated coma with faint and diffuse outer region. Altitude: 9°. End of astronomical twilight.) 2013 8 16.83 S 11.5 TK 40.7L 135 1.8 4 BIV 2013 8 14.83 S 11.5 TK 40.7L 135 1.5 4 BIV 2012 8 12.47 S 11.8 GA 25.4L 71 2 SEA Cowra, NSW 2012 8 11.50 S 11.9 GA 25.4L 71 2 SEA Cowra, NSW 2012 8 9.88 S 9.8 TK 20.3T 77 5 2 GON Alto del Castro, León (Wide elongated coma with faint and diffuse outer region. Altitude: 11°.End of astronomical twilight. Mag. 11.6 [TK] star in coma.) 2012 8 8.94 S 11.6 AU 22.0L 160 2 3 GOI Araçatuba 2012 8 8.49 S 12.5 GA 25.4L 114 SEA Cowra, NSW 2012 7 25.36 M 12.9 AQ 25.0L 83 0.8 6 WYA Walcha, NSW (Coma is small with bright stellar central condensation, slightly elongated to ENE, moonlight interference.) 2012 7 22.91 S 10.2 TK 20.3T 77 5 2/ GON Alto del Castro, León (Better observing conditions from a higher mountain location allowed a brighter estimate than six days ago: wide coma with faint and very diffuse outer region.) 2012 7 20.38 M 12.6 AQ 25.0L 83 1.8 6 WYA Walcha, NSW (Coma has a faint broad extension to the NE, a small stellar-lke condensation with a small narrow and tapered tail-like feature elongated to the NE as well but not traceable past the edge of the broad NE edge of the coma.) 2012 7 19.52 S 12.4 GA 25.4L 71 1.5 SEA Cowra, NSW (Seemed somewhat elongated at 114x.) 2012 7 18.52 S 12.6 GA 25.4L 114 & 1 SEA Cowra, NSW (Possibly seen at 71x [Mv = 12.4] but clouds prevented confirmation.) 2012 7 16.91 S 11.1 TK 20.3T 100 3.5 3 GON Pandorado, León (Elongated coma with faint and very diffuse outer region, probably wider than 6'.) 2012 7 16.37 M 12.8 AQ 25.0L 39 1.5 6 WYA Walcha, NSW (Small bright central condensation with faint outer coma, best visible using averted vision at x39.) 2012 7 15.37 M 12.5 AU 25.0L 83 1.2' 6 WYA Walcha, NSW (Bright stellar central condensation, wispy faint outer coma which is broad and elongated to the ENE.) 2012 7 13.60 S 12.8 GA 25.4L 114 & 1 SEA Cowra, NSW 2012 7 12.94 S 11.3 TK 20.3T 133 2.5 4 GON Pandorado, León (Elongated coma with faint and very diffuse outer region, probably wider than 6'.) 2012 6 24.47 S 12.9 AQ 25.0L 83 0.7 6 WYA Walcha, NSW (No tail, outer coma very faint, small stellar central condensation.) 2012 6 23.42 M 13.1 AQ 25.0L 83 0.8 6 WYA Walcha, NSW (Coma has diffuse outer coma, coma elongated to NE approximately.) 2012 6 22.85 S 12.7 UD 25.4L 171 0.6 2 IVA Melovoe 2012 6 20.85 S 12.5 UD 25.4L 171 0.5 3 IVA Melovoe 2012 6 20.52 S 13.1 GA 25.4L 114 0.7 SEA Cowra, NSW 2012 6 19.53 S 13.0 GA 25.4L 71 & 1 SEA Cowra, NSW 2012 6 19.43 M 13.0 AQ 25.0L 83 0.5 6/ WYA Walcha, NSW (Coma elongated to NE approximately, disappears when Swan Band filter is applied. At x156, the elongation could be described as a tail 0.2' in length in position angle 67°.) 2012 6 18.38 M 13.4 AQ 25.0L 39 0.5 6/ WYA Walcha, NSW (No tail, coma small and has bright stellar central condensation. Coma elongated to the NE.) 2012 6 18.08 S 11.9 AU 22.0L 160 1 5 GOI Araçatuba 2012 6 15.40 M 12.8 AQ 25.0L 83 0.5 7 WYA Walcha, NSW (No tail, observation made difficult due to crowded star field, coma elongated to NE.) 2012 6 15.35 S 12.7 HS 20.3L 92 0.7 7 BIV 2012 6 14.85 S 12.5 UD 25.4L 171 0.5 3 IVA Melovoe 2012 6 14.39 M 12.8 AQ 25.0L 83 0.5 6/ WYA Walcha, NSW (No tail, small compact central condensation.) 2012 6 13.95 S 11.8 TK 20.3T 133 3.0 2/ GON Alto del Castro, León (Central condensation, m2=13.3 [GSC], surrounded by a diffuse coma.) 2012 6 12.46 S 13.1 GA 25.4L 114 SEA Cowra, NSW 2012 6 12.12 S 12.0 AU 22.0L 160 1 4 GOI Araçatuba 2012 6 11.35 S 12.8 HS 20.3L 92 0.7 7 BIV 2012 6 10.34 S 12.7 HS 20.3L 92 0.8 7 BIV 2012 6 9.34 S 12.7 HS 20.3L 92 0.8 7 BIV 2012 5 24.990 S 13.0 AU 30.5T 95 0.6 5 BOU Burlage, Germany (Comet observed at only 11° altitude at moments of good seeing thanks to very dry transparant sky.) 2012 5 24.982 S 12.7 AU 30.5T 95 0.5 4 DIJ Burlage 2012 5 21.58 S 13.3 GA 25.4L 114 0.9 SEA Cowra, NSW 2012 5 19.45 M 13.1 AQ 25.0L 83 0.7 6 WYA Walcha, NSW (Bright central condensation, small coma with faint edges.) 2012 5 18.54 S 13.3 GA 25.4L 114 SEA Cowra, NSW 2012 5 18.45 M 13.5 AQ 25.0L 156 0.5 7 WYA Walcha, NSW (Coma small but bright with bright central condensation. Swan Filter did not make much difference to enhancement.) 2012 5 15.08 S 12.2 TK 20.3T 133 2.5 2 GON Pandorado, León (Central condensation, m2=14.2 [HN], surrounded by a faint and diffuse coma. Nearby field stars checked in DSS. Comparison stars for m2 taken from Henden photometry near HP Lib.) 2012 4 27.08 S 14.5:HS 40.7L 135 0.4 5 BIV 2012 4 25.10 S 14.8:HS 40.7L 135 0.5 4 BIV 2012 3 28.19 I 14.6 HN 20.3T 200 0.3 7 GON Alto del Castro - Aralla, León (Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near HP Lib.)