[vsnet-chat 4106] CP Dra astrometry

[Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>]

Dear all,

  I have performed astrometry of CP Dra using the image taken at
Kyoto.  Using 14 GSC-ACT stars as references, the location is:
R. A. = 10h15m39s.88, Decl. = +73o26'05".4 (J2000.0).  It shows good
agreement with the position by A. Henden (10:15:39.85  +73:26:05.2,
vsnet-chat 4105), besides somewhat disagrees with the position by T.
Vanmunster (vsnet-alert 5711, vsnet-campaign-dn 532).  The reason
of this disagreement would probably be that Tonny used the USNO-A2.0
coordinates for references, whose epoch (1953.179) is older than
GSC-ACT (1984.099).  

  The DSS2 R image shows a faint object at this position which was not
catalogued in USNO or such.  Its rmag is about 19.5.

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

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