{
  "bibcode": "2005GCN..3783....1P",
  "body": "E. Pavlenko, A. Shlyapnikov, Yu. Efimov, A. Baklanov, V. Rumyantsev  (CrAO),\nA.Pozanenko (IKI), D. Sharapov, M. Ibrahimov, (MAO) on behalf of larger GRB\nfollow up collaboration report:\n\nWe observed XRT error box (Racusin et al., GCN 3752)  of   GRB050803 (Band\net al., GCN 3748) with 2.6m Shain telescope (CrAO) on August 3 (Pavlenko et\nal., GCN 3760) and August 4.  The object mentioned in GCN 3753 (Berger et\nal.) is detected in both epochs.  We recalibrated our data (Pavlenko et al.,\nGCN 3760) and found the R-magnitude  of the object:\n\n Mid time Aug.3, (UT)22:02 R = 22.10 +/- 0.10\n Mid time Aug.4, (UT)21:41 R = 22.05 +/- 0.05\n\nwhich is in agreement with photometry reported in GCN 3763 (Burenin et al.).\nSince no variability of the proposed object is detected it cannot be\nconsidered as OT candidate.\n\nMeanwhile extended object is detected in the FOV with coordinates RA(J2000)=\n23:22:38.73 Dec(J2000)=05:47:12.4 at Aug.3, (UT) 22:02 with R=21.78 +- 0.03\nwhich is not visible on Aug. 4 observations. Detailed analysis shows that it\nis an asteroid with velocity ~0.005 arcsec/sec toward N-W. The detected\nasteroid in not presented in the catalogs of Minor Planet Center\n(http://cfa-www.harvard.edu/cfa/ps/mpc.html).\n\nThis message may be cited.",
  "circularId": 3783,
  "createdOn": 1123696710000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB050803: CrAO optical observations, no OT candidate",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 050803"
}