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* * * * * C/2001 Q4 (NEAT) * * * * *
lightcurve and images Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2005 3 8.45 S[11.0 TJ 40.0L 144 !1.2 YOS Ibaraki, Japan (Not visible due to the dim sky. The limiting magnitude was not deep because of interference by many faint stars in the Milky Way.) 2005 2 6.873 S 13.2 HN 31.0J 155 1.2 0/ DIJ Lauwersoog 2005 2 6.872 S 13.5 HN 31.0J 155 0.8 1 BOU Lauwersoog (Comet very faint and diffuse.) 2005 2 5.42 S 12.0 HS 40.0L 144 0.9 2 YOS Ibaraki, Japan (Diffuse but bright still now. Interestingly it keeps the same brightness and look for 3 months since November. I wonder when it fades out.) 2005 1 8.39 S 12.7 HS 40.0L 144 1.6 2 YOS Ibaraki, Japan (Diffuse, but still bright, large and clearly visible. Interestingly, it keeps the same brightness since November.) 2005 1 2.802 S 13.0 TA 31.0J 109 1.1 0/ DIJ Langelo 2005 1 2.799 S 13.0 TA 31.0J 109 1.5 2 BOU Langelo 2004 12 16.91 S 12.4 HS 25.6L 84 1.5 2 BIV Poigny-la-Foret 2004 12 12.86 S 12.7 HS 20.3L 95 1.5 2 BIV Haute Provence Obs. 2004 12 11.88 S 12.9 HS 20.3L 95 1.2 3 BIV Haute Provence Obs. 2004 12 11.85 S 12.8 TK 20.3T 100 1.5 1 GON Aralla, Leon 2004 12 11.46 S 12.3:HS 40.0L 144 1.8 2 YOS Gunma, Japan (Very faint and diffuse. Inaccurate estimate because overlapping on a magn. 13.7 star.) 2004 12 8.89 S 12.4 HS 25.6L 84 1.3 3 BIV Poigny-la-Foret 2004 12 3.781 S 12.5 TA 31.0J 89 1.8 1/ BOU Sint Annen 2004 11 24.209 S 12.4 TA 31.0J 89 2.5 0/ DIJ Sint Annen 2004 11 24.201 S 12.3 TA 31.0J 89 2 1/ BOU Sint Annen 2004 11 21.042 S 12.1 TA 31.0J 89 2.0 1/ DIJ Sint Annen 2004 11 21.036 S 12.4 TA 31.0J 89 2 1 BOU Sint Annen 2004 11 17.909 S 12.9 TK 30.0T 152 0.5 2 LOO Le Castellard, France 2004 11 16.066 S 12.6 TK 30.0T 74 1 2 LOO Le Castellard, France 2004 11 15.91 S 12.5 TK 20.3T 100 1.5 2 GON Camposagrado, Leon 2004 11 15.167 S 11.9 TK 30.0T 152 1 2 LOO Le Castellard, France 2004 11 14.91 S 11.6 TK 25.6L 84 3.0 3 BIV Poigny-la-foret 2004 11 14.767 S 12.4 TA 31.0J 89 1.5 1/ BOU Sint Annen 2004 11 9.42 S 12.8 HS 40.0L 144 1.2 2 YOS Gunma, Japan 2004 11 8.956 S 12.0 TA 25.4J 72 2 1 BOU Sint Annen (Comet becoming very diffuse and faint.) 2004 11 4.821 S 11.9 TK 25.4J 72 2.2 2 BOU Sint Annen 2004 10 21.940 S 11.4 TK 31.0J 72 2.5 3 BOU Sint Annen 2004 10 21.16 S 11.3 TK 25.6L 42 3.0 3 BIV Poigny-la-foret 2004 10 19.813 S 11.3 TK 31.0J 89 2.0 2/ BOU Sint Annen (Comet close to 12th magnitude star.) 2004 10 18.85 S 11.3 TK 40.7L 58 3.5 3 BIV Poigny-la-foret 2004 10 16.80 S 11.1 TK 25.6L 42 3.0 4 BIV Poigny-la-foret 2004 10 15.43 S 11.4 TJ 40.0L 75 1.7 3/ YOS Gunma, Japan 2004 10 12.92 S 11.0 TK 25.6L 42 4.0 3 BIV Poigny-la-foret 2004 10 12.826 S 11.2 TK 30.5T 125 & 2 1 COM Roden 2004 10 12.797 S 10.8 TK 31.0J 72 2 1/ DIJ Sint Annen 2004 10 12.794 S 10.9 TK 31.0J 72 2.3 2/ BOU Sint Annen 2004 10 11.799 S 10.8 TK 25.4J 72 2.4 2/ BOU Sint Annen 2004 10 10.844 S 10.6 TK 31.0J 72 2.4 2/ DIJ Sint Annen 2004 10 10.842 S 10.8 TK 31.0J 72 3 3 BOU Sint Annen 2004 10 8.846 S 10.8 TK 31.0J 72 2.5 3 BOU Sint Annen 2004 10 8.843 S 10.6 TK 31.0J 72 2.0 2 DIJ Sint Annen 2004 10 7.890 S 10.9 TK 31.0J 72 2.2 2/ DIJ Sint Annen 2004 10 7.890 S 10.7 TK 31.0J 72 2.8 2/ BOU Sint Annen 2004 10 6.85 S 10.2 TK 25.6L 42 4.0 4 BIV Poigny-la-foret 2004 10 6.803 S 10.7 TK 31.0J 72 3 2/ BOU Sint Annen 2004 10 5.798 S 10.6 TK 25.4J 58 2.5 3 BOU Sint Annen 2004 10 4.819 S 10.6 TK 25.4J 72 2.5 3 BOU Sint Annen (Comet close to 11th magnitude star.) 2004 9 24.09 S 10.3 TK 25.6L 42 3.5 3 BIV Poigny-la-foret 2004 9 21.98 M 10.1 TK 20.3L 63 3 4 GUZ Krosno (Some light pollution.) 2004 9 19.831 S 10.5 TK 25.4J 58 3 3 DIJ Sint Annen 2004 9 19.828 S 10.2 TK 25.4J 58 3.0 3/ BOU Sint Annen 2004 9 19.08 S 10.2 TK 13.0L 45 2 3/ RES Ostrorog 2004 9 18.06 S 10.1 TK 13.0L 45 2 4 RES Ostrorog 2004 9 17.80 S 10.7 TJ 40.0L 144 1.1 6 YOS Gunma, Japan 2004 9 17.13 S 10.1 TK 40.7L 58 4.0 4 BIV Ablis 2004 9 17.05 S 10.2 TK 20.3L 63 2.5 4 GUZ Krosno (Only faintly seen because of some light pollution.) 2004 9 16.95 S 10.1 TK 20.3T 77 3 4 GON Alto del Castro, Leon 2004 9 15.95 S 9.8 TK 15.2L 38 5 1/ GRA Fjellhamar (Only barely visible despite a quite dark sky [about NEL = 6.0].) 2004 9 15.10 S 10.3 TK 25.6L 42 4.0 4 BIV Poigny-la-foret 2004 9 14.933 S 10.0 TK 25.4J 58 2.8 3/ BOU Sint Annen 2004 9 11.86 S 10.4 TK 30.5T 56 1/ COM Roden 2004 9 10.95 M 10.1 TK 20.3L 63 3 5 GUZ Krosno (Some light pollution.) 2004 9 9.86 S 10.1 TK 30.5T 56 & 3 2 COM Roden 2004 9 8.90 S 9.6 TK 40.7L 58 4.0 5 BIV Ablis 2004 9 8.890 M 9.7 TK 31.0J 58 5.2 3/ DIJ Sint Annen 2004 9 8.890 M 9.7 TK 31.0J 58 3 4 BOU Sint Annen 2004 9 8.88 M 9.9 TK 20.3L 63 3 5 0.2 160 GUZ Krosno (Rather bright, moderately condensed with faint, thin tail.) 2004 9 7.89 S 9.8 TK 30.5T 56 & 4 2 COM Roden 2004 9 7.88 S 9.3 TK 15.2L 44 4.5 2 GRA Fjellhamar 2004 9 7.857 M 9.7 TK 25.4J 58 4 4 DIJ Sint Annen 2004 9 7.855 S 9.7 TK 25.4J 58 3.3 3/ BOU Sint Annen 2004 9 4.95 S 9.5 TK 13.0L 45 3 4 RES Ostrorog 2004 9 4.01 S 9.4 TK 13.0L 45 3 4 RES Ostrorog 2004 9 1.86 S 9.3 TK 25.6L 42 4.0 5 BIV Versailles 2004 8 26.09 S 9.3 TK 20.3T 77 4 4 GON Alto del Castro - Aralla, Leon 2004 8 25.96 S 9.2 TK 13.0L 45 3 4 RES Smolniki Wdeckie 2004 8 23.89 M 8.9 TK 15.2L 38 5 2/ GRA Fjellhamar 2004 8 22.94 M 8.9 TK 15.2L 38 5.5 3 GRA Fjellhamar 2004 8 22.85 S 8.9 TK 13.0L 45 3 4 RES Ocypel 2004 8 21.99 S 9.0 TK 30.5T 56 & 5 3 COM Roden 2004 8 21.91 M 8.8 TK 15.2L 29 5.5 3/ GRA Fjellhamar 2004 8 21.869 S 9.1 TK 10.0B 25 5 3/ DIJ Zwartemeer 2004 8 21.866 S 9.1 TK 10.0B 25 4.5 3/ BOU Zwartemeer 2004 8 21.08 S 9.2 TK 20.3T 77 4 4 GON Alto del Castro - Aralla, Leon 2004 8 20.45 S 9.4 TJ 40.0L 75 2.3 6 YOS Gunma, Japan 2004 8 19.98 S 9.0 TK 30.5T 56 & 5 3 COM Roden 2004 8 19.97 S 9.0 TK 10.0B 25 7 4 GON Linares - Proaza, Asturias 2004 8 19.894 S 8.7 TK 8.0B 15 3.5 3/ DIJ Sint Annen 2004 8 19.878 S 9.0 TK 8.0B 15 4.5 3/ BOU Sint Annen 2004 8 19.00 S 8.9 TK 7.0R 24 5 2/ GRA Malm 2004 8 18.01 S 8.9 TK 7.0R 24 4 3 GRA Malm (Faintly seen at solar altitude -12 deg from this 64 deg N location.) 2004 8 17.89 S 8.6 TK 30.5T 56 & 6 3 COM Roden 2004 8 16.903 M 9.0 TK 25.4J 47 4 4/ BOU Sint Annen 2004 8 16.90 S 9.2 TK 40.7L 58 4.0 5 0.4 150 BIV Valdrome 2004 8 15.90 S 9.0 TK 5.0B 7 5 5 BIV Valdrome 2004 8 15.90 S 9.2 TK 40.7L 58 3.5 5 0.5 150 BIV Valdrome 2004 8 15.86 S 8.6 TK 5.0B 10 5 4 GUZ Krosno (Only faintly seen because of some light pollution.) 2004 8 14.93 M 8.6 TK 15.2L 38 5.5 3/ GRA Fjellhamar (Appearance of comet similar to M51 [galaxy was slightly brighter]. Bortle class 4-5 sky [NEL near 6.0].) 2004 8 14.92 S 8.9 TK 5.0B 7 6 5 BIV Valdrome 2004 8 13.95 M 8.6 TK 7.0R 24 5.5 3 GRA Fjellhamar (Clearly visible thanks to a clear and transparent sky. Darkness has returned, NEL=6.0 [approx.].) 2004 8 13.94 S 8.7 TK 5.0B 7 6 5 BIV Valdrome 2004 8 12.90 S 8.7 TK 5.0B 7 5 5 BIV Valdrome 2004 8 12.92 S 8.8 TK 10.0B 25 6 4 0.1 90 GON Cordal de las Segadas, Asturias 2004 8 12.91 S 8.6 TK 8.0B 11 8 3 GON Cordal de las Segadas, Asturias 2004 8 11.95 S 8.5:TK 5.0B 7 5 5 BIV Valdrome 2004 8 9.906 M 8.8 TK 8.0B 15 4.5 4 BOU Sint Annen 2004 8 8.893 M 8.7 TK 31.0J 58 4 3/ DIJ Sint Annen 2004 8 8.892 M 8.7 TK 31.0J 58 4.5 4/ BOU Sint Annen 2004 8 7.95 S 8.5 TK 15.2L 38 5 3 GRA Fjellhamar 2004 8 7.897 S 8.6 TK 8.0B 15 4.5 3 DIJ Sint Annen 2004 8 7.894 M 8.7 TK 8.0B 15 5 3/ BOU Sint Annen 2004 8 6.02 S 8.5 TK 15.2L 38 4 3 GRA Fjellhamar (Faintly visible due to thin clouds and moonlight.) 2004 8 5.915 M 8.7 TK 8.0B 15 6.5 2/ DIJ Sint Annen 2004 8 5.913 S 8.6 TK 8.0B 15 5 3/ BOU Sint Annen 2004 8 4.92 S 8.2 TK 5.0B 7 8 4 GON Villasecino, Leon 2004 8 3.901 M 8.5 TK 25.4J 47 4.5 4/ BOU Sint Annen 2004 8 2.906 M 8.6 TK 25.4J 47 3.5 4 BOU Sint Annen 2004 8 1.96 S 8.3 TK 15.2L 38 4.5 3/ GRA Fjellhamar 2004 7 28.969 M 8.4 TK 8.0B 15 4.2 4 BOU Zuidwolde 2004 7 28.009 S 8.4 TK 8.0B 15 & 7 5/ COM Roden 2004 7 27.96 S 8.6 TK 15.2L 29 3.5 3/ GRA Fjellhamar 2004 7 27.960 S 8.6 TK 8.0B 15 6 3 DIJ Sint Annen 2004 7 27.958 M 8.4 TK 8.0B 15 4.5 4/ BOU Sint Annen 2004 7 26.98 S 8.5 TK 15.2L 44 3 3 GRA Fjellhamar (Comet hard to see in nautical twilight.) 2004 7 26.00 S 7.9 TK 10.0B 25 5 5 0.1 85 GON Alto del Castro - Aralla, Leon 2004 7 25.99 S 7.7 TK 5.0B 7 7 5 GON Alto del Castro - Aralla, Leon 2004 7 23.968 S 8.4 TK 6.0B 15 6 3 DIJ Groningen 2004 7 23.953 M 8.3 TK 8.0B 15 4 5 BOU Sint Annen 2004 7 20.953 S 8.2 TK 6.0B 15 6 3/ DIJ Groningen 2004 7 20.947 M 8.1 TK 8.0B 15 4 5/ BOU Zuidwolde 2004 7 20.94 S 7.5 TK 5.0B 7 7 5 GON Puerto de Navafria, Madrid 2004 7 18.93 M 8.0:TK 5.0B 10 4 5 GUZ Krosno 2004 7 16.94 S 8.1 TK 5.0B 7 6 6 BIV Poigny-la-foret 2004 7 15.93 S 8.1 TK 5.0B 7 6 5 BIV Versailles 2004 7 15.93 S 8.1 TK 25.6L 42 4.5 5 BIV Versailles 2004 7 14.95 B 7.6 TK 10.0B 25 7 6 0.2 90 GON Alto del Castro - Aralla, Leon (Fanned tail spanning from 90 deg. to 140 deg.) 2004 7 14.94 B 7.4 TK 5.0B 7 8 7 GON Alto del Castro - Aralla, Leon 2004 7 12.98 B 7.6 TK 10.0B 25 6 6 0.2 90 GON Alto del Castro - Aralla, Leon 2004 7 12.97 B 7.4 TK 5.0B 7 7 7 GON Alto del Castro - Aralla, Leon 2004 7 12.93 S 7.8 TK 5.0B 7 7 5 BIV Lezeaux 2004 7 12.89 M 7.6 TK 5.0B 10 4 5 GUZ Krosno 2004 7 8.90 M 7.5 TK 5.0B 10 5 4 GUZ Krosno 2004 7 6.963 M 7.6 TK 8.0B 15 4.5 4/ BOU Sint Annen 2004 7 6.956 S 7.6 TK 6.0B 15 7 4 DIJ Groningen 2004 7 6.89 M 7.4 TK 5.0B 10 6 5 GUZ Krosno 2004 7 5.960 M 7.6 TK 8.0B 15 5 4/ BOU Sint Annen 2004 7 5.953 S 7.6 TK 6.0B 15 4 4 DIJ Noorddijk 2004 7 5.88 M 7.3 TK 5.0B 10 6 5 GUZ Krosno 2004 7 3.958 M 7.5 TK 8.0B 15 4.5 4 BOU Zuidwolde (Moonlight and twilight.) 2004 6 30.92 S 6.9 TK 5.0B 10 5 5 GUZ Krosno 2004 6 30.12 B 7.0 TK 10.0B 25 8 6 0.2 100 GON Alto del Castro - Aralla, Leon 2004 6 30.11 B 7.0 TK 5.0B 7 8 7 GON Alto del Castro - Aralla, Leon 2004 6 29.965 M 7.3 TK 8.0B 15 5 4/ BOU Groningen (Moonlight and twilight.) 2004 6 29.92 S 7.1 HV 5.0B 7 7 4 BIV Versailles 2004 6 28.972 S 7.2 TK 6.0B 15 8 3/ DIJ Groningen 2004 6 28.03 S 6.9 HV 5.0B 7 7 4 BIV Versailles 2004 6 27.10 B 7.0 TK 5.0B 7 8 7 0.2 100 GON Alto del Castro - Aralla, Leon 2004 6 24.91 S 6.7 HV 5.0B 7 8 5 BIV Versailles 2004 6 22.88 M 6.8 TK 5.0B 10 7 6 0.6 95 GUZ Krosno 2004 6 21.92 B 6.7 TK 5.0B 7 8 7 0.4 100 GON Angliru - Sierra del Aramo, Asturias 2004 6 21.90 M 6.7 TK 5.0B 10 6 5 0.6 100 GUZ Krosno 2004 6 19.95 S 7.1 TK 5.0B 7 8 5 0.7 100 BIV Poigny-la-foret 2004 6 19.806 M 6.7 TK 8.0B 15 7.5 5/ 1.0 80 DIJ Agios Nikolaos, Crete 2004 6 19.804 M 6.8 TK 8.0B 15 5 6 0.7 94 BOU Agios Nikolaos, Crete 2004 6 18.797 M 6.8 TK 8.0B 15 7 5 0.8 86 DIJ Agios Nikolaos, Crete 2004 6 18.795 M 6.8 TK 8.0B 15 5 6 0.7 96 BOU Agios Nikolaos, Crete 2004 6 17.96 S 7.0 TK 5.0B 7 8 6 0.5 90 BIV Versailles 2004 6 17.96 S 7.1 TK 25.6L 42 5 6 0.5 110 BIV Versailles 2004 6 17.91 M 6.5 TK 5.0B 10 7 6 0.7 105 GUZ Krosno (Some light pollution.) 2004 6 17.802 M 6.7 TK 8.0B 15 10 5 0.9 85 DIJ Agios Nikolaos, Crete 2004 6 17.801 M 6.7 TK 8.0B 15 5.5 6 1.0 96 BOU Agios Nikolaos, Crete 2004 6 16.95 S 6.9 TK 5.0B 7 7 5 BIV Versailles 2004 6 16.799 M 6.7 TK 8.0B 15 7 5 0.85 85 DIJ Agios Nikolaos, Crete 2004 6 16.797 M 6.6 TK 8.0B 15 5 6 1.1 96 BOU Agios Nikolaos, Crete (Under very good conditions faint dusttail glimpsed some 0.25 deg. long fanning out to about p.a. 145 deg.) 2004 6 15.97 B 6.6 TK 10.0B 25 6 7 0.9 95 GON Alto del Castro - Aralla, Leon (Gas tail 0.9 deg. in p.a. 95 deg, dust fanned tail 0.3 deg. in p.a. 150 deg.) 2004 6 15.96 B 6.4 TK 5.0B 7 7 7 0.9 95 GON Alto del Castro - Aralla, Leon 2004 6 15.90 M 6.4 TK 5.0B 10 7 6 1.1 105 GUZ Krosno (Tail still rather long despite some light pollution.) 2004 6 15.801 M 6.5 TK 8.0B 15 8 5/ 0.7 93 DIJ Agios Nikolaos, Crete 2004 6 15.799 M 6.5 TK 8.0B 15 5 6 0.9 100 BOU Agios Nikolaos, Crete 2004 6 14.799 M 6.6 TK 8.0B 15 8 5 0.7 93 DIJ Agios Nikolaos, Crete 2004 6 14.797 M 6.4 TK 8.0B 15 5 6 0.9 98 BOU Agios Nikolaos, Crete 2004 6 13.95 S 6.4 TK 0.0E 5 5 BIV Poigny-la-foret 2004 6 13.95 S 6.6 TK 5.0B 7 7 6 0.8 95 BIV Poigny-la-foret 2004 6 13.94 B 6.2 TK 5.0B 7 8 7 0.9 105 GON Alto del Castro - Aralla, Leon 2004 6 13.90 M 6.4 TK 5.0B 10 7 6 1.3 110 GUZ Krosno 2004 6 13.88 S 6.4 TK 3.5B 7 7 5 0.8 80 RES Ostrorog 2004 6 13.797 M 6.6 TK 8.0B 15 10 5 0.6 94 DIJ Agios Nikolaos, Crete 2004 6 13.795 M 6.3 TK 8.0B 15 5 6 0.8 98 BOU Agios Nikolaos, Crete 2004 6 13.02 B 6.2 TK 5.0B 7 8 7 0.8 105 GON Alto del Castro - Aralla, Leon 2004 6 12.95 S 6.6 TK 5.0B 7 7 5 BIV Versailles 2004 6 12.88 S 6.3 TK 3.5B 7 9 5 0.5 85 RES Ostrorog 2004 6 12.806 M 6.4 TK 8.0B 15 8 5/ 0.5 96 DIJ Agios Nikolaos, Crete 2004 6 12.805 M 6.2 TK 8.0B 15 5.5 6/ 1.0 98 BOU Agios Nikolaos, Crete 2004 6 11.89 S 6.1 TK 3.5B 7 9 5/ 0.1 90 RES Ostrorog 2004 6 11.803 M 6.5 TK 8.0B 15 8 5 0.5 97 DIJ Agios Nikolaos, Crete 2004 6 11.801 M 6.2 TK 8.0B 15 7 6/ 0.9 94 BOU Agios Nikolaos, Crete 2004 6 10.93 S 6.4 HV 5.0B 7 7 5 0.5 100 BIV Versailles 2004 6 10.806 M 6.3 TK 5.0B 7 10 5 1.3 96 DIJ Agios Nikolaos, Crete 2004 6 10.803 M 6.1 TK 5.0B 7 8 6/ 1.2 99 BOU Agios Nikolaos, Crete 2004 6 9.803 M 6.1 TK 5.0B 7 8 6/ 1.5 104 BOU Agios Nikolaos, Crete 2004 6 9.801 M 6.3 TK 5.0B 7 10 5 1.0 96 DIJ Agios Nikolaos, Crete 2004 6 8.95 B 5.9 TK 5.0B 7 8 7 1.3 95 GON Puerto de Aralla, Leon 2004 6 8.795 M 6.2 TK 5.0B 7 15 6 1.2 103 DIJ Agios Nikolaos, Crete 2004 6 8.792 M 6.0 TK 5.0B 7 9 6 1.6 106 BOU Agios Nikolaos, Crete 2004 6 7.797 M 6.1 TK 5.0B 7 13 5/ 0.5 97 DIJ Agios Nikolaos, Crete 2004 6 7.793 M 5.9 TK 5.0B 7 10 6 1.7 103 BOU Agios Nikolaos, Crete 2004 6 6.95 S 5.5 HV 0.0E 10 5 BIV Ablis 2004 6 6.95 S 5.9 HV 5.0B 7 7 6 1.0 100 BIV Ablis 2004 6 6.874 M 6.3 TK 5.0B 7 13 5/ 1.2 98 DIJ Agios Nikolaos, Crete 2004 6 6.870 M 5.9 TK 5.0B 7 8.5 5/ 1.4 100 BOU Agios Nikolaos, Crete 2004 6 5.960 M 5.8 TK 5.0B 7 9 6 1.5 102 BOU Sint Annen 2004 6 5.91 M 5.9 TK 5.0B 10 8 5 GUZ Paris, France (Observation made from Paris during IWCA III.) 2004 6 2.93 B 5.6 TK 5.0B 7 8 6 GON Alto del Castro - Aralla, Leon (Moonlight.) 2004 6 1.97 S 5.5 TK 15.2L 38 5.5 4/ GRA Fjellhamar (Visibility inferior to that of M13. Strong twilight [NEL=3.7 near comet]. My first comet observation from Norway during June.) 2004 6 1.85 M 5.4 TK 5.0B 10 10 6 0.8 100 GUZ Krosno (Moonlight.) 2004 5 31.97 M 5.5 TK 15.2L 38 6 5/ GRA Fjellhamar 2004 5 31.87 M 5.3 TK 5.0B 10 10 6 1.2 100 GUZ Krosno (Moonlight.) 2004 5 31.87 M 5.2 TK 0.0E 1 12 5 GUZ Krosno (At the limit of visibility; moonlight.) 2004 5 30.99 S 5.6 TK 15.2L 38 5 4/ GRA Fjellhamar 2004 5 30.98 S 5.6 TK 7.0R 24 5 4 GRA Fjellhamar (Barely visible, not seen in 7x50 binoculars. It was, however, better seen with 20.3-cmT at 62x [on May 30.96] and 15.2-cmL at 38x. Strong twilight [solar altitude around -8.0 deg]. NEL = 3.8 near comet.) 2004 5 30.92 B 5.4 TK 5.0B 7 10 6 GON Tenebredo, Asturias (Moonlight.) 2004 5 30.91 S 5.4 HV 5.0B 7 10 5 BIV Versailles 2004 5 30.84 M 5.3 TK 5.0B 10 10 6 GUZ Krosno (Moonlight) 2004 5 29.89 S 5.0 TK 3.5B 7 15 5/ 0.8 105 RES Ostrorog 2004 5 28.968 M 5.3 TK 5.0B 7 10 5/ 1.4 103 BOU Sint Annen (Moonlight.) 2004 5 28.932 M 5.0 TK 6.0B 15 13 5 1.5 103 DIJ Groningen 2004 5 28.88 S 4.8 TK 3.5B 7 16 5/ 0.9 105 RES Ostrorog 2004 5 27.906 S 5.2 TK 5.0B 10 12 7 1.3 105 GIL Noordwijk (Moonlight, altitude Sun -12 degrees.) 2004 5 27.90 S 4.8 AC 3.7B 7 15 5/ 1.2 105 RES Ostrorog 2004 5 27.86 M 5.1 TK 0.0E 1 10 5 GUZ Krosno 2004 5 27.85 M 5.0 TK 5.0B 10 12 6 0.8 105 GUZ Krosno (Despite strong moonlight and some haze the tail was still visible.) 2004 5 26.97 S 4.8 TK 5.0B 7 9 5 GRA Fjellhamar (Only faintly visible due to a bright sky. Visibility similar to M13, but the latter object was seen under a darker sky background. Solar altitude -8.7 deg. NEL = 4.2.) 2004 5 26.958 M 4.9 TK 5.0B 7 12 6/ 1.5 105 BOU Sint Annen (Moonlight.) 2004 5 26.924 M 4.9 TK 6.0B 15 13 5/ 2.2 103 DIJ Groningen 2004 5 26.88 S 4.6 AC 3.7B 7 16 5/ 0.5 105 RES Szamotuly 2004 5 25.02 S 4.7 HV 5.0B 7 8 6 1.6 100 BIV Ablis 2004 5 25.01 S 4.6 HV 0.0E 10 5 BIV Ablis 2004 5 24.928 M 4.7 TK 6.0B 15 12 5/ 1.6 105 DIJ Groningen 2004 5 23.93 S 4.6 HV 0.0E 10 5 BIV Versailles 2004 5 23.93 I 4.4 TK 0.0E 1 7 GON Alto de la Degollada, Candamo, Asturias 2004 5 23.92 B 4.5 TK 5.0B 7 12 7 1.5 115 GON Alto de la Degollada, Candamo, Asturias (Some moonlight interference.) 2004 5 23.91 S 4.7 HV 5.0B 7 16 6 1.0 110 BIV Versailles 2004 5 23.91 M 4.5 TK 5.0B 10 10 7 3.2 105 GUZ Krosno (Comet also faintly visible with naked eye. Tail was rather thin and long. Moonlight interference.) 2004 5 23.008 M 4.5 TK 5.0B 7 14 7 2.2 106 BOU Sint Annen 2004 5 22.990 M 4.3 TK 5.0B 7 16 6 2.5 107 DIJ Sint Annen 2004 5 22.99 N 10.3 TK 20.3T 118 6/ GRA Fjellhamar (Magnitude refers to an apparently stellar nucleus.) 2004 5 22.96 M 4.5 TK 5.0B 7 10 5/ GRA Fjellhamar (Solar altitude -9.4 deg. NEL = 4.5.) 2004 5 22.95 S 4.5 HV 5.0B 7 10 6 1.8 100 BIV Ablis 2004 5 22.91 S 4.5 HV 0.0E 15 5 BIV Ablis 2004 5 22.910 M 4.6 TK 5.0B 10 >10 6 &1.0 COM Lyngby, Denmark 2004 5 22.87 M 4.3 TK 0.0E 1 15 7 2 110 GUZ Krosno 2004 5 22.87 M 4.3 TK 5.0B 10 12 7 5 107 GUZ Krosno (Again three tails were visible! 5 deg. long gas tail in p.a. 107 deg. was composed in 2 deg. long, broad and slightly curved dust tail visible in p.a. 116 deg. Type-III tail was also noticeable at least 1 deg. long in p.a. 170 deg. Very good conditions.) 2004 5 21.913 M 4.4 TK 5.0B 10 >12 6/ &2.0 COM Lyngby, Denmark 2004 5 21.903 S 4.5 TK 5.0B 7 6 8 JOH Gronau 2004 5 21.90 S 4.3 AC 3.0R 7 20 5 0.5 105 RES Szamotuly 2004 5 21.89 S 4.4 HV 5.0B 7 15 5 BIV Versailles 2004 5 21.35 B 4.6 AA 5.0B 10 SEA Cowra, NSW 2004 5 20.93 S 4.3 HV 0.0E 15 5 BIV Lezeaux 2004 5 20.94 S 4.4 HV 5.0B 7 12 5 2.5 110 BIV Lezeaux 2004 5 20.86 M 4.2 TK 5.0B 10 12 7 3 105 GUZ Krosno 2004 5 20.85 M 4.0 TK 0.0E 1 15 7 2 110 GUZ Krosno (Easily visible, however fainter and smaller than previously.) 2004 5 20.35 S 4.2 AA 0.0E 1 SEA Cowra, NSW 2004 5 19.976 M 4.2 TK 5.0B 7 14 6/ 2.8 118 BOU Sint Annen 2004 5 19.97 M 4.6 TK 5.0B 7 11 6 GRA Fjellhamar (Comet remains an easy binocular object. Solar altitude -10.1 deg. NEL = 4.5.) 2004 5 19.96 S 4.2 HV 5.0B 7 12 6 2.5 110 BIV Lezeaux 2004 5 19.94 S 4.1 HV 0.0E 10 6 BIV Lezeaux 2004 5 19.92 I 3.9 TK 0.0E 1 15 6 1.0 115 GON Sierra del Aramo, Asturias 2004 5 19.91 B 4.1 TK 5.0B 7 12 7 2.5 115 GON Sierra del Aramo, Asturias 2004 5 19.35 S 4.1 AA 0.0E 1 SEA Cowra, NSW (In 25x100B, main tail 2.6 degrees in p.a. 105 deg., secondary tail 0.6 degrees in p.a. 165 deg.) 2004 5 18.98 S 4.1 HV 5.0B 7 12 6 2.0 110 BIV Lezeaux 2004 5 18.97 M 4.4 TK 5.0B 7 12 6 GRA Fjellhamar (Diffuse blue-green coma with a bright central condensation [mag. 6.7 in 7x50B, ref. TK]. A broad tail was suspected towards east. Comet appeared larger and considerably brighter than M13, but was not seen naked eye. Also observed with 7.0-cmR at 15x: m1 = 4.6 (M, TK), coma 11' and DC6. Solar altitude -10.3 deg. NEL = 4.5 [stellar].) 2004 5 18.942 M 4.0 TK 5.0B 7 13 7 3.5 105 BOU Sint Annen (Besides a 3.5 deg gastail in p.a. 105 deg., a faint broad dusttail could be followed to about 2.5 deg. in p.a. 120 deg. A type-III tail was also suspected but the glare of the nearby pair rho1 and 53 Cnc interfered. Comet still was a very easy object to the naked eye.) 2004 5 18.94 S 4.0 HV 0.0E 15 5 BIV Lezeaux 2004 5 18.934 M 4.1 TK 5.0B 7 14 7 3.6 114 DIJ Sint Annen 2004 5 18.908 M 4.4 TK 5.0B 10 12 7 & 2 COM Roden 2004 5 18.896 S 4.3 TK 5.0B 10 12 7 1.5 109 GIL Noordwijk (Comet visible with the naked eye.) 2004 5 17.97 S 4.2 HV 5.0B 7 15 6 2.5 110 BIV Lezeaux 2004 5 17.96 S 4.0 HV 0.0E 15 6 BIV Lezeaux 2004 5 17.918 M 4.4 TK 5.0B 10 &15 7 & 2 COM Roden (In 30.5-cmT at 56x, fine short and broad tail with streamers.) 2004 5 17.908 M 4.0 TK 6.0B 15 15 8 4 108 DIJ Groningen 2004 5 17.905 M 4.0 TK 5.0B 7 14 6/ 2.5 109 BOU Bedum 2004 5 17.888 S 4.2 TK 5.0B 10 12 8 1.3 108 GIL Noordwijk 2004 5 17.83 S 3.9 AC 6.0B 7 19 6 1.8 100 RES Poznan 2004 5 16.92 I 3.3 TK 0.0E 1 20 6 2.0 115 GON Alto del Castro - Aralla, Leon 2004 5 16.92 S 4.0 HV 5.0B 7 18 6 2.5 110 BIV Lezeaux 2004 5 16.915 M 3.9 TK 5.0B 7 21 8 5 105 DIJ Sint Annen 2004 5 16.913 M 3.9 TK 5.0B 7 14 6/ 3.5 106 BOU Sint Annen (Tail rather broad with sharper northern edge. Type-III tail faintly visible as a broad faint glow, about 0.8 degrees long in roughly p.a. 160 deg.) 2004 5 16.91 S 4.0 HV 0.0E 12 5 BIV Lezeaux 2004 5 16.91 B 3.5 TK 5.0B 7 15 7 5.0 115 GON Alto del Castro - Aralla, Leon 2004 5 16.910 M 3.9 TK 5.0B 10 &15 7 >2.0 COM Roden (Straight tail. broad and quite faint in 10x50B.) 2004 5 16.875 S 4.0 TK 5.0B 10 16 8 1.3 105 GIL Noordwijk (Comet better visible to the naked eye than previous day.) 2004 5 16.87 M 3.8 TK 5.0B 10 12 7 7.5 105 GUZ Krosno (Amazing object. Faint and thin ion tail 7.5 deg long in p.a. 112 deg. was superimposed on broad dust tail 3 deg. long in central p.a. 122 deg. Faint type-III (?) tail was also noticeable in centered p.a. 170 deg. Excellent conditions, NEL ~6.5 near the comet.) 2004 5 16.86 M 3.6 TK 0.0E 1 15 7 3 110 GUZ Krosno (Obvious object with rather long although faint tail.) 2004 5 16.35 B 3.7 AA 0.0E 1 4 108 SEA Cowra, NSW (In 25x100B, secondary tail traced to 1.3 degrees from p.a. 170 degrees and extending around to main tail.) 2004 5 15.94 N 8.9 TK 15.2L 44 11 6/ 0.8 GRA Fjellhamar 2004 5 15.94 M 3.8 TK 5.0B 7 16 6/ 1.0 105 GRA Fjellhamar (Coma clearly bluer than K3 star Eta Cnc. Comet faintly seen to naked eye. The 'N' estimate with the 15.2-cmL refers to a stellar false nucleus. Solar altitude -10.6 deg. NEL = 4.5 [stellar].) 2004 5 15.93 S 4.1 HV 5.0B 7 15 6 2.0 110 BIV Ablis 2004 5 15.92 S 4.0 HV 0.0E 15 5 BIV Ablis 2004 5 15.899 M 3.8 TK 5.0B 7 17 6 2.1 107 BOU Bedum (Fine object close to the Beehive [M44]. Tail broad and rather faint.) 2004 5 15.897 M 3.8 TK 5.0B 7 13 8 5.8 118 DIJ Bedum 2004 5 15.892 S 4.2 TK 5.0B 7 6 7 JOH Gronau 2004 5 15.889 M 4.2 TK 5.0B 10 >10 7 & 1.5 COM Roden (In twilight, coma very condensed and faint straight tail in 10x50B.) 2004 5 15.875 S 3.9 TK 5.0B 10 16 7 1.4 110 GIL Noordwijk (Comet faintly visible with naked eye. View with 20x60B more impressive with tail just touching M44.) 2004 5 15.84 S 3.6 AC 3.5B 7 20 7 1.5 100 RES Ostrorog 2004 5 14.91 I 3.1 TK 0.0E 1 25 6 2.5 115 GON Alto del Castro - Aralla, Leon 2004 5 14.90 B 3.3 TK 5.0B 7 17 6 5.0 115 GON Alto del Castro - Aralla, Leon (Mountain location, very clear sky. 7x50B: Ion tail: 5 deg, broader dust tail: 1 deg.) 2004 5 14.89 S 3.7 TK 5.0B 7 15 6 1.0 110 BIV Poigny-la-foret 2004 5 14.89 S 3.7 TK 0.0E 20 6 BIV Poigny-la-foret 2004 5 14.885 S 4.0 TK 5.0B 7 8 6 JOH Gronau 2004 5 14.86 M 3.4 TK 5.0B 10 15 7 4 105 GUZ Krosno 2004 5 14.85 M 3.3 TK 0.0E 1 20 7 2 110 GUZ Krosno (Comet between clouds.) 2004 5 14.83 S 3.5 AC 3.5B 7 23 7 3.2 105 RES Ostrorog 2004 5 14.38 S 3.4 AA 0.0E 1 8 115 SEA Cowra, NSW (In 25x100B, secondary tail visible to 0.6 degrees from p.a. 195 deg. and extending around to main tail.) 2004 5 13.882 S 4.0 TK 5.0B 7 &10 6 JOH Gronau 2004 5 13.83 S 3.3 AC 3.5B 7 22 6/ 2.5 105 RES Poznan 2004 5 13.38 S 3.1 AA 0.0E 1 6 110 SEA Cowra, NSW (Some high cloud began to drift in. Secondary tail visible in both 10x50B and 25x100B.) 2004 5 12.93 M 3.5 TK 5.0B 7 17 6 GRA Fjellhamar (Fairly easily seen despite 8.5 deg altitude and twilight [Sun 11 deg under horizon]. Comparison stars Zeta Hya [faintly seen naked eye, hence NEL = 3.2] and Epsilon Hya at almost same altitude as comet.) 2004 5 12.92 M 3.7:TK 5.0B 7 15 6 SKI Hønefoss (Magnitude somewhat uncertain due to bright sky, some thin cloud stripes and only one comparison star [Beta Cnc]. No tail was seen. The coma showed an apparently steller nucleus and appeared blue compared to the K4 star Beta Cnc. NEL = 2.0 [approx.].) 2004 5 12.91 S 3.6 TK 5.0B 7 20 6 2.5 130 BIV Pico-Veleta, Spain 2004 5 12.90 S 3.5 TK 0.0E 20 6 BIV Pico-Veleta, Spain 2004 5 12.85 M 3.2 TK 5.0B 10 20 6 4.5 105 GUZ Krosno (Tail broad and rather faint.) 2004 5 12.84 M 3.1 TK 0.0E 1 25 7 0.5 110 GUZ Krosno (Obvious naked eye object with short, faint tail.) 2004 5 12.38 S 3.0 AA 0.0E 1 8 110 SEA Cowra, NSW (At times, the NE tail was strongly suspected out to lengths of approx. 19 degrees.) 2004 5 11.91 S 3.3 TK 0.0E 20 6 BIV Pico-Veleta, Spain 2004 5 11.91 I 2.8 TK 0.0E 1 30 6 1.5 115 GON Piedrafita de Babia, Leon 2004 5 11.90 B 2.9 TK 5.0B 7 25 6 2.5 115 GON Piedrafita de Babia, Leon 2004 5 11.38 S 2.9 AA 0.0E 1 10 110 SEA Cowra, NSW (Tail length with averted vision, but there were moments when I glimpsed greater lengths. Once or twice, I was convinced that I fleetingly glimpsed some 23 degrees of tail. In 25x100B, a second, broad, tail tail of approx. 1 degree was observed in p.a. 180 degrees, plus a third vague feature of about 10-15' in p.a. 265 degrees. There appeared to be a slight brightening of main tail about 4 degrees from coma - poss. the same feature as seen last night.) 2004 5 10.92 S 3.6 TK 5.0B 7 20 6 3.0 120 BIV Pico-Veleta, Spain 2004 5 10.91 S 3.4 TK 0.0E 25 6 BIV Pico-Veleta, Spain 2004 5 10.40 I 3.1 TK 0.0E 1 &20 6 MAT Saint Kilda Beach, SA (Good observing conditions. Comet at 50 degrees altitude. In 25x100B, coma appeared 22' wide. The faint Type I ion tail was tracable for at least 5 degrees in p.a. 108. The Type II dust tail appeared broad with slight curvature towards the south, over 2 degrees in length.) 2004 5 10.35 S 2.8 AA 0.0E 1 30 6 7 120 SEA Cowra, NSW (In 25.4L at 71x, false nucleus very sharp and star like. In 25x100B and 10x50B, a possible 'cloud' (DE?) was suspected about 3 degrees from coma. 10.45 UT, m = 2.9 thro' reversed 2.5x25B.) 2004 5 10.32 M 3.1 TK 6.3B 9 17 6/ 9.2 117 DAH Kilauea, HI (An additional, very diffuse, tail component, with a length of 1.2 degrees was seen at a p.a. 173 deg. The surface brightness of the tail appears slightly higher than yesterday. Observed from an elevation of 1000m close to Kilauea Caldera within Hawaii Volcanoes National Park. Bortle Class 2 sky.) 2004 5 10.31 B 3.0 TK 0.7E 1 19 7 7.9 117 DAH Kilauea, HI 2004 5 9.91 B 3.4 TK 0.7E 1 15 5 GRA Funchal, Madeira 2004 5 9.91 M 3.4 TK 5.0B 7 15 6 1.7 120 GRA Funchal, Madeira (7x50B showed an apparently stellar cc of approx. mag. 6.0 [ref. TK]. The comet was an easy naked eye object. NEL = 5.0.) 2004 5 9.82 M 3.2 TK 5.0B 10 15 7 2.5 120 GUZ Krosno (Tail was broad and rather faint. Naked eye: m1=3.0, Dia=20', DC=8. Very good conditions after thunderstorm.) 2004 5 9.29 M 3.2 TK 6.3B 9 19 6 11 116 DAH Hale Pohaku, HI (Long, narrow (ion?) tail component was seen superposed on a shorter, more diffuse (dust?) component, the latter having the largest value of its position angle. The tabulated values for the tail refer to the longest component. A narrow streamer within the tail was particularly well-defined at a distance of 2-3 degrees from the coma. A third, very diffuse, tail component with a length of 1.5 degrees was seen at p.a. 176 deg.) 2004 5 9.27 B 3.0 TK 0.7E 1 19 7 11 115 DAH Hale Pohaku, HI (The first 6 degrees of tail were quite bright and obvious to the naked eye, while the last 5 degrees were exceedingly faint. The comet was far enough outside the bright zodical light cone to be seen against a dark sky. A prominent starlike "nucleus" was seen within the coma. Observed from an elevation of 2900m at the south slope of Mauna Kea. Bortle Class 1 sky.) 2004 5 8.89 S 3.4 HV 5.0B 7 20 6 2.8 120 BIV Pico-Veleta, Spain 2004 5 8.87 M 3.5 TK 5.0B 7 17 6 3 GRA Funchal, Madeira (C/2001 Q4 showed a coma that was distinctly bluer than the nearby K5 star HR 3014. Within the coma there was an apparently stellar cc of about mag. 6.5 [ref. TK]. The brightness and extent of coma was quite similar to Omega Centauri. A rather broad tail was directed towards SE. Comet first seen with 7x50B and naked eye at solar altitudes -7 and -10 deg, respectively. Formal observation made when the Sun was 12-13 below the true horizon [clouds later]. NEL = 5.0-5.5 at best.) 2004 5 8.87 I 2.9 TK 0.0E 1 30 7 GON Peguerinos, Avila 2004 5 8.86 B 3.1 TK 5.0B 7 25 7 2.0 110 GON Peguerinos, Avila 2004 5 8.85 S 3.3 HV 0.0E 20 6 3.0 120 BIV Pico-Veleta, Spain 2004 5 8.44 M 2.8 TK 0.0E 1 &20 6 >2 110 MAT Stockport Observatory, SA (Comet has moved sufficiently away from Alpha Mon to make a reliable estimate.) 2004 5 8.40 M 2.5:TK 0.0E 1 &20 6 >2 110 MAT Stockport Observatory, SA (Excellent observing conditions. Comet at 50 degrees altitude. 25x100B gave a magnificent 3-dimensional view of the comet. Only 4' from 4th magnitude alpha Mon which artificially enhanced magnitude estimate! The bright nucleus was stellar in appearance with a triangular dust hood forward of the core. The blue-green, oval shaped coma appeared 25' wide. The faint strand of Type I ion tail was tracable between the star clusters NGC 2506 and NGC 2539, at least 8 degrees in length in p.a. 110. The rather faint Type II dust tail appeared broad with slight curvature towards the south, over 2 degrees in length in p.a. 130. A very faint type III dust fan spreads in p.a. 185 along the orbit of the comet. Slight interference from the Milky way.) 2004 5 8.35 S 2.9 AA 0.0E 1 SEA The Entrance, NSW 2004 5 7.89 S 3.6 HV 5.0B 7 20 6 2.0 120 BIV Pico-Veleta, Spain 2004 5 7.88 M 3.4 TK 5.0B 7 17 6 1.8 GRA Funchal, Madeira (Bluish coma with a bright central part. Tail was broad, first half degree of it was quite bright. Comet easily visible to naked eye at m1 = 3.4 [ref. TK] and diameter approx. 15'. Due to clouds, however, the comet was only observed for a couple of minutes. Altitude 24 deg. NEL = 5.0 [approx]. This observation and those from May 8.87 and 9.91 were made from Pico da Cruz [261 meters above sea level].) 2004 5 7.87 S 3.6 HV 0.0E 20 7 2.0 120 BIV Pico-Veleta, Spain 2004 5 7.83 $S 3.5:AC 3.5B 7 &10 4 RES Szamotuly (Very clear sky. Magnitude estimate corrected for atmospheric extinction with ICQ summer table. Low altitude, about 3 deg.) 2004 5 7.40 M 2.8 TK 0.0E 1 &20 6 MAT Stockport Observatory, SA (Observed prior to moonrise. In 25x100B, glorious sight with M47 and M46 in the same field of view. Coma size measures 25'. Milky way interference.) 2004 5 7.34 S 2.9 AA 0.0E 1 SEA The Entrance, NSW (Tail to about 4 degrees in 10x50B. Visible naked-eye with averted vision, but length difficult to determine due to Milky Way.) 2004 5 7.30 M 3.4 TK 6.3B 9 10 6/ 2.3 119 DAH Honolulu, HI (The comet formed a nice group with M46 and M47, all within the same binocular field of view. The tail appeared fan-shaped.) 2004 5 7.29 B 3.1 TK 0.7E 1 13 6/ DAH Honolulu, HI (The comet was a more obvious naked eye object than Omega Centauri. No obvious tail was seen with the naked eye.) 2004 5 6.86 S 3.5 HV 5.0B 7 20 6 2.0 125 BIV Pico-Veleta, Spain 2004 5 6.86 S 3.4 HV 0.0E 20 6 BIV Pico-Veleta, Spain 2004 5 6.46 I 3.1 TK 0.7E 6 MAT Stockport Observatory, SA (Moonlight.) 2004 5 6.34 S 2.9 AA 0.0E 1 SEA The Entrance, NSW (Tail to 4 degrees in 10x50B before Moon rise.) 2004 5 4.88 M 3.7 TK 5.0B 7 16 5/ 1.5 125 GRA Funchal, Madeira (Tail appeared faint and of moderate width. Observed formally during total lunar eclipse at 9 deg altitude. Then it was also faintly seen with naked eye and the comet was imaged with a digital camera. NEL = 4.0 near comet. Comet first seen when the Sun was 8 deg below horizon [20h29m UT] and last detected 73 min later at true altitude 3 deg. Observed from 261 meters elevation at Pico da Cruz.) 2004 5 4.46 I 3.4 TK 0.7E 1 6 MAT Stockport Observatory, SA (Moonlight.) 2004 5 4.40 S 3.3 AA 5.0B 10 SEA The Entrance, NSW (Observed through high cloud and full moonlight.) 2004 5 3.87 M 3.8 TK 5.0B 7 12 5/ GRA Funchal, Madeira (Diffuse coma. Easily visible in 7x50B despite 7 deg altitude, an almost full Moon and twilight [Sun 12 deg below horizon]. Comet appeared almost equal in brightness to nearby Kappa CMa. NEL = 3.0 [approx.] near comet.) 2004 5 3.35 S 3.4 AA 0.0E 1 SEA The Entrance, NSW (Tail greater than 4 degrees in 10x50B despite bright moonlight.) 2004 5 3.26 M 3.7 TK 6.3B 9 9 5 3.0 125 DAH Honolulu, HI (The comet was visible to the naked eye in spite of strong moonlight; naked eye magnitude estimate mv=3.7.) 2004 5 2.44 I 3.5 TK 0.7E 1 6 MAT Stockport Observatory, SA (Moonlight.) 2004 5 2.39 S 3.4 AA 0.0E 1 SEA The Entrance, NSW (Bright moonlight, but tail could be marginally glimpsed by naked eye for short distance. Coma slightly enhanced with Swan Band filter [in 25 x 100B], but central condensation appeared less starlike and more diffuse with filter. Very sharp cc without filter.) 2004 5 1.50 I 3.6 TK 0.7E 1 6 MAT Stockport Observatory, SA (Moonlight.) 2004 5 1.39 S 3.5 AA 0.0E 1 SEA The Entrance, NSW (Tail traced for 3-4 degrees in 10x50B.) 2004 4 30.39 S 3.7 AA 0.0E 1 SEA The Entrance, NSW (Tail fairly obvious in 25x100B & 10x50B in very moonlight sky. Possible divergence into gas and dust components, but difficult to be sure in the moonlight. In contrast to earlier observation [Apr. 25], the northern edge of the tail appeared more sharply defined now.) 2004 4 26.48 S 4.2:TK 5.0B 7 13 6 >2.0 140 MAT Stockport Observatory, SA (Moderate light pollution.) 2004 4 25.39 S 3.9 AA 0.0E 1 SEA The Entrance, NSW (Tail marginally glimpsed naked eye using averted vision. Comet was a fine sight in 25x100B and 10x50B. Tail visible to 4 degrees in 25x100B, quite broad from p.a. 130 to at least 140 degrees. Southern edge of tail more clearly defined.) 2004 4 24.40 S 4.0 AA 0.0E 1 SEA The Entrance, NSW (Easily seen with naked eye. In 25x100B, comet was a fine sight with 1.7 degrees of tail in p.a. 150 degrees. D = 12' with pronounced central condensation.) 2004 4 22.44 S 4.1 AA 2.8B 4 SEA The Entrance, NSW 2004 4 20.41 S 4.4 AA 0.0E 1 SEA The Entrance, NSW 2004 4 18.42 S 4.6 AA 0.0E 1 SEA The Entrance, NSW (Appeared easier to naked eye. Tail visible in 10x50B despite considerable light pollution in region of comet.) 2004 4 17.50 S 4.6 TK 5.0B 7 12 6 3.0 160 MAT Sorell, Tasmania 2004 4 17.42 S 4.7 AA 0.0E 1 SEA The Entrance, NSW (From The Entrance, comet could be seen faintly NE thro light pollution of Sydney.) 2004 4 16.48 S 4.7 TT 5.0B 7 11 6 >2 162 MAT Sorell, Tasmania 2004 4 15.48 S 4.8 TT 5.0B 7 11 6 >2 165 MAT Strahan, Tasmania Excellent conditions. Naked eye estimate 4.9.) 2004 4 15.40 S 4.7 AA 0.0E 1 SEA Cowra, NSW (In 25x100B, diameter is 8', tail 1.5 deg., p.a. near coma, 150 deg., but tail curved toward p.a. 165 degrees. Comet was a fine sight in binocular and easily visible to naked eye. Brighter section of tail visible to naked eye, giving comet an elongated appearance.) 2004 4 14.44 S 4.6 AA 0.0E 1 SEA Cowra, NSW (In 25x100B, 40' tail in p.a. 165 degrees. In 25.4L at 71x, up to 1 degree of tail visible. Very sharp central condensation with a small point 'nucleus' at the centre of this.) 2004 4 10.40 S 5.2 AA 5.0B 10 SEA The Entrance, NSW 2004 4 9.39 S 5.0 AA 2.5B 2 SEA The Entrance, NSW 2004 4 1.76 S 5.6 AA 0.0E 1 SEA The Entrance, NSW 2004 3 31.75 S 5.8 AA 5.0B 10 SEA The Entrance, NSW (Almost certainly glimpsed NE, but thin high cloud began to drift in before this could be confirmed.) 2004 3 29.73 S 5.9 AA 2.5B 2 SEA The Entrance, NSW 2004 3 29.73 B 6.1 AA 5.0B 10 SEA The Entrance, NSW 2004 3 27.45 S 6.1 TK 5.0B 7 7 5 MAT Adelaide, SA (In 25x100B, >1 degree of tail visible.) 2004 3 25.72 S 6.0 AA 2.5B 2 SEA The Entrance, NSW (In 25x100B, D = 8' with vague tail to about 0.5 degrees and spanning p.a. approx 140-160 deg.) 2004 3 25.41 S 6.1 AA 5.0B 10 SEA The Entrance, NSW (Comet was well enhanced through Swan Band Filter in both 10x50B and 25x100B. This was especially noticeable with 25x100B in the lighter evening skies. Central condensation appeared significantly sharper through filter.) 2004 3 24.41 S 6.1 AA 2.5B 2 SEA The Entrance, NSW 2004 3 24.40 S 6.2 AA 5.0B 10 SEA The Entrance, NSW 2004 3 23.39 M 6.3 AA 5.0B 10 SEA The Entrance, NSW 2004 3 20.45 S 6.6 TK 5.0B 7 7 5 MAT Tooprerang, SA 2004 3 20.40 S 6.1 AA 5.0B 10 SEA The Entrance, NSW 2004 3 19.44 S 6.7 TK 10.0B 25 7 5 MAT Stockport Observatory, SA (Coma is moderately enhanced by a swan band filter. A CCD image reveals an ion tail >30' long in p.a. 175 deg.) 2004 3 18.39 S 6.3 AA 5.0B 10 SEA The Entrance, NSW 2004 3 17.44 S 6.3 AA 0.0E 1 SEA Cowra, NSW (Not absolutely certain about naked-eye sighting, but on several occasions a small spot appeared to be visible at the comet's position, using averted vision. The mag. estimate was made using a 6.4 star [very marginally visible in-focus] and a 6.1 star which could be quite clearly seen.) 2004 3 17.40 S 6.3 AA 2.5B 2 SEA Cowra, NSW 2004 3 16.49 S 6.9:TK 10.0B 25 6 5 MAT Adelaide, SA (Moderate light pollution.) 2004 3 16.44 S 6.3 AA 2.5B 2 SEA Cowra, NSW 2004 3 15.42 S 6.3 AA 3.5B 6 SEA Cowra, NSW (With 25.4-cmL at 71x, coma diameter approx. 8' in diameter with a pronounced central condensation. Coma was clearly not spherical. Appeared to be 'flat' on the NW side, giving a vaguely triangular appearance, a little like a fat pear! Pear shape accentuated by a 'stalk'; a short, narrow, spike-like tail to the SE. Little changed thro' Swan Band Filter, although central condensation may have been a little less prominent with filter.) 2004 3 12.44 S 7.2 TK 10.0B 25 6 5 MAT Adelaide, SA 2004 3 9.44 S 7.4:TK 10.0B 25 5 5 MAT Adelaide, SA (Moderate light pollution, moderate enhancement with a swan band filter.) 2004 3 9.40 S 6.9 AA 5.0B 10 SEA The Entrance, NSW (Quick observation through break in drifting cloud.) 2004 3 8.40 S 7.1 AA 5.0B 10 SEA The Entrance, NSW (Sky very light [Moon just risen] and comet close to 7th. mag. star.) 2004 3 2.72 S 7.1 AA 3.5B 6 SEA Cowra, NSW 2004 3 2.72 S 7.0 AA 2.5B 2 SEA Cowra, NSW 2004 3 1.77 S 7.2 AA 3.5B 6 SEA Cowra, NSW 2004 2 28.58 S 7.5 TK 5.0B 7 5 5 MAT Wallaroo, SA (Observed after moonset. 15 degrees elevation.) 2004 2 28.44 S 7.4 AA 5.0B 10 SEA The Entrance, NSW 2004 2 28.44 M 7.5 AA 10.0B 25 SEA The Entrance, NSW 2004 2 27.41 S 7.3 AA 5.0B 10 SEA The Entrance, NSW 2004 2 20.48 S 7.8 TK 5.0B 7 5 5 MAT Wallaroo, SA (In 25x100B, a short 10' dust tail is visible in p.a. 90 deg. Coma is slightly enhanced by a swan band filter. A CCD image reveals the dust tail plus an ion tail >24' long in p.a. 158 deg. and a small starlike nuclear condensation of 12th magnitude.) 2004 2 20.43 S 7.6 AA 5.0B 10 SEA The Entrance, NSW 2004 2 19.46 S 7.6 AA 2.5B 2 SEA Cowra, NSW 2004 2 19.45 S 7.6 AA 3.5B 6 SEA Cowra, NSW 2004 2 18.46 S 7.6 AA 3.5B 6 SEA Cowra, NSW 2004 2 17.46 S 7.7 AA 3.5B 6 SEA Cowra, NSW (In 25x100B, outer coma aprrox. 8' in diameter. A little fainter when viewed through Swan Band filter.) 2004 2 16.48 M 7.8 AA 10.0B 25 SEA Cowra, NSW (Comet close to star. In 25.4-cmL at 71x, non-stellar central condensation of approx. mag. 9.5, with point 'nucleus' about 2 mags. fainter.) 2004 1 25.47 S 8.5 AA 3.5B 6 SEA Cowra, NSW 2004 1 23.50 S 9.0 TK 10.0B 25 3 6 MAT Clare Valley, SA (Coma moderately enhanced by swan band filter.) 2004 1 20.44 S 8.8 AA 10.0B 25 & 4 SEA The Entrance, NSW (Hazy sky.) 2004 1 19.47 S 8.6:AA 10.0B 25 SEA The Entrance, NSW (Drifting cloud. Comet close to star.) 2004 1 10.46 S 9.0 AA 5.0B 10 SEA The Entrance, NSW 2004 1 9.45 S 9.2 AA 8.0B 15 SEA Cowra, NSW (Sky becoming light from rising moon.) 2003 12 30.47 S 9.4 AA 10.0B 25 SEA The Entrance, NSW (Comet enhanced using Swan Band filter.) 2003 12 27.52 S 10.1 TK 28.0T 133 2 5 MAT Wallaroo, SA 2003 12 25.50 B 9.7 AA 10.0B 25 SEA The Entrance, NSW 2003 12 22.45 S 9.7 AA 10.0B 25 SEA The Entrance, NSW 2003 12 19.45 B 9.9 AA 10.0B 25 SEA Cowra, NSW 2003 12 18.49 S 9.8 AA 10.0B 25 SEA Cowra, NSW 2003 12 17.47 M 9.7 AA 10.0B 25 SEA Cowra, NSW 2003 12 15.46 S 9.9 AA 10.0B 25 SEA Cowra, NSW 2003 12 14.51 S 9.8 AA 10.0B 25 SEA The Entrance, NSW 2003 12 13.50 S 10.5:TK 28.0T 133 1 5 MAT Adelaide, SA (Light pollution moderate.) 2003 12 10.43 S 9.9 AA 10.0B 25 SEA The Entrance, NSW 2003 12 3.71 S 10: LM 5.0B 10 SEA Cowra, NSW 2003 11 27.45 S 10.2 AA 10.0B 25 SEA The Entrance, NSW 2003 11 26.54 S 10.2 AA 10.0B 25 SEA The Entrance, NSW 2003 11 14.52 S 11.3 TK 28.0T 133 1.5 6 MAT Wallaroo, SA 2003 11 14.43 S 10.3 LM 10.0B 25 SEA Cowra, NSW 2003 11 11.47 S 11.1 TK 28.0T 133 1.0 6 0.03 0 MAT Wallaroo, SA 2003 11 11.43 S 10.4 LM 10.0B 25 2 SEA Cowra, NSW 2003 10 29.67 S 11.3 TK 28.0T 133 1.0 6 MAT Wallaroo, SA 2003 10 16.59 S 11.4 TK 28.0T 133 1.0 6 MAT Wallaroo, SA 2003 10 13.48 S 11.5 TK 28.0T 133 1.0 6 0.03 312 MAT Wallaroo, SA 2003 9 27.67 S 11.9 TK 28.0T 133 1.0 6 MAT Wallaroo, SA 2003 9 21.58 S 12.0 TK 28.0T 133 1.0 5 MAT Wallaroo, SA 2003 9 19.53 S 11.6 GA 10.0B 25 SEA Cowra, NSW 2003 9 18.58 S 12.1 TK 28.0T 133 1.0 5 MAT Wallaroo, SA 2003 9 17.56 S 11.6 GA 10.0B 25 SEA Cowra, NSW 2003 8 28.59 S 12.1 GA 10.0B 25 SEA Cowra, NSW 2003 8 28.57 M 12.0 GA 25.4L 71 SEA Cowra, NSW 2003 8 26.56 S 12.0 GA 25.4L 71 SEA Cowra, NSW (Possibly glimpsed in 25x100B.) 2003 8 6.71 M 12.5 GA 25.4L 71 0.9 5 SEA Cowra, NSW 2003 8 4.70 S 12.6 GA 25.4L 71 SEA Cowra, NSW 2003 7 27.71 S 12.9 TK 28.0T 133 1 5 MAT Wallaroo, SA (Comet is running slightly brighter than the ephemeris.) 2003 7 22.69 S 13.0 GA 28.0T 133 1 5 MAT Wallaroo, SA (HS comparisons give mag 13.5. Moderately condensed.) 2003 5 31.79 S 13.3 GA 25.4L 114 SEA Cowra, NSW 2003 5 29.83 S 14.0:HS 28.0T 310 0.5 5 MAT Wallaroo, SA 2003 2 1.52 S 15.0:HS 28.0T 133 0.5 5 MAT Wallaroo, SA 2002 12 3.572 S 14.5:HS 28.0T 196 0.3 6 BOU Roxby Downs, SA (Small, condensed object. Very faint, but definitely seen during quiet moments in rather windy conditions. Observation made in Australian outback on the night before the total solar eclipse during comet observing session with Michael Mattiazzo, Charles Morris, Andrew Pearce and Timo Karhula.) 2002 12 3.56 S 14.5:NO 28.0T 196 0.3 6 MAT Roxby Downs, SA (USNO V comparisons.)