217P/LINEAR
The following are the latest observations of 217P/LINEAR.
The coma has become fainter as a whole. The bright star at
the center is magnitude 8.8 (GSC). The glow of the comet to the right shows
a slight and faint trail to the west. The star-like nucleus is very clear.
I believe that the positions are accurately measured and effective to determine
a non-gravitational effect.
(Geisei Observatory: Seki, Muraoka, Shimomoto)
217P/LINEAR
2009.10.21 2h37m-45m(J.S.T)
70cm Reflector, hypered 2415 film
(The bright object at the center is a star. The glow to the right is the comet)
Copyright (C) 2009 Geisei Observatory
Visual observation:
2009UT m1 dia. DC Trans. Seeing Inst. Obs.
Oct.20.73 11.8 1′ 7 4/5 4/5 70cm L 144× T.Seki
Photographic positional measurements:
0217P 2009 10 20.73229 06 17 11.23 -04 39 11.8 14.5 N 372
0217P 2009 10 20.73681 06 17 11.48 -04 39 11.9 14.6 N 372
