* * * * * C/2004 H6 (SWAN) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2004 8 19.918 S 11.9:AU 31.0J 72 1.8 0 DIJ Sint Annen 2004 8 19.917 S 12.0:AU 31.0J 72 &3.5 0 BOU Sint Annen (Extremely vague object, but seen at correct location near mag. 11.5 star.) 2004 8 8.906 S 11.0:TK 31.0J 58 5 0/ BOU Sint Annen (Comet is very diffuse; just a faint glow...) 2004 8 8.903 S 10.5:TK 31.0J 58 6 0/ DIJ Sint Annen 2004 8 7.49 S 11.5:TK 45.0L 90 4 1 MAT Stockport Observatory, SA (Considerably diffuse. Rapid fading apparent. Mag 5.7 star 6' west of comet.) 2004 7 28.029 S 9.8 TK 31.0J 58 6.5 0/ DIJ Sint Annen 2004 7 28.026 S 10.2 TK 31.0J 58 5.5 1 BOU Sint Annen 2004 7 26.08 S 10.5 TK 20.3T 77 6 2 GON Alto del Castro - Aralla, Leon 2004 7 24.012 S 9.6 TK 25.4J 47 5.5 1/ BOU Sint Annen 2004 7 21.05 S 8.7 TK 8.0B 11 6 2 GON Cotanes, Zamora 2004 7 17.60 S 8.9 TK 10.0B 25 8 2 MAT Stockport Observatory, SA (Comet has grown considerably more diffuse since last observation. A large coma with very little brightening towards the centre.) 2004 7 15.14 S 9.2 TK 20.3T 77 6 2 GON Alto del Castro - Aralla, Leon (Diffuse. Astronomical twilight.) 2004 7 15.14 S 8.6 TK 8.0B 11 6 2 GON Alto del Castro - Aralla, Leon 2004 7 15.13 S 8.8 TK 10.0B 25 6 3 GON Alto del Castro - Aralla, Leon 2004 7 14.60 S 9.4 AA 10.0B 25 4 3 SEA The Entrance, NSW (Slightly enhanced through Swan Band filter.) 2004 7 13.08 S 8.9 TK 10.0B 25 5 2 GON Alto del Castro - Aralla, Leon (Diffuse. Coma enhanced with Swan band filter.) 2004 6 25.75 S 7.9 AA 5.0B 10 6 4 SEA The Entrance, NSW 2004 6 20.74 S 7.8 AA 5.0B 10 SEA The Entrance, NSW 2004 6 7.84 S 7.7 TK 10.0B 25 2.5 6 MAT Stockport Observatory, SA (Moonlight.) 2004 5 30.80 B 7.6 AA 10.0B 25 3 7 0.3 145 SEA The Entrance, NSW (Tail was very marginal, but I think real.) 2004 5 28.80 B 7.3 AA 10.0B 25 3 7 SEA The Entrance, NSW 2004 5 21.84 S 7.4 TK 10.0B 25 3 7 MAT Alpana ranch, SA (CCD image reveals an ion tail >8' long in p.a. 187 deg.) 2004 5 20.84 S 7.5 TK 10.0B 25 3 7 MAT Alpana ranch, SA (4 degrees altitude in the morning sky. Strongly enhanced with a Swan band filter. Through a 28-cm SCT the coma appears strongly condensed but no stellar nucleus is visible. ) 2004 5 14.39 S 7.8:TK 10.0B 25 3 7 MAT Gawler, SA (2 degrees altitude in the evening sky. Moderately enhanced with a Swan band filter.)