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Reports from Geisei Observatory <November 18, 2004>

• P/2004 TU12 (Siding Spring)
    P/2004 TU12 was initially discovered as a minor planet, but has recently been reported to have a tail detected. However, the comet in Geisei's photograph appears stellar just like the famous Comet Chiron. The magnitude is approximately at 15.5. As its motion to the north was fast, exposures were made every 3 minutes. (Photograph 1)

• C/2004 Q2 (Machholz)
    It is brightening in the southern sky. Before long it will become a naked-eye comet and make a U-turn to move north. The tail is fuzzy and extending in the opposite direction (PA 300°). (Photograph 2)

@It is approximately 6.5 magnitude, almost at the same brightness as C/2003 K4 (LINEAR), which is shining in the southern sky in morning twilight.
(Photograph 2)


Photograph 1@P/2004 TU12 (Siding Spring)
Exposed every 3 minutes from 21:46 to 22:10 on November 16, 2004 J.S.T.
60cm f/3.5 reflector Aclos 100 film

C/2004 Q2 (Machholz)
15-minute exposure from 1:34 on November 17, 2004
60cm f/3.5 reflector T-Max 400 film

Copyright (C) 2004 Tsutomu Seki.