{
  "bibcode": "2005GCN..4381....1H",
  "body": "J. P. Halpern & S. Tyagi (Columbia U.) report:\n\n\"We observed the position of possible Swift GRB 051221B\nin the R-band with the MDM 1.3m for 30 minutes starting\non Dec. 22 01:31 UT, or 5.5 hours after the BAT trigger\n(Boyd et al., GCN 4376).\n\nWe find an object of R=21.8 located at\n\nRA(J2000) = 20h 49m 34.8s\nDec(J2000) = +53d 02' 11.8\"\n\nwhich is consistent in position with the fading XRT source\n(Page et al., GCN 4378).  (We use a USNO B1.0 comparison star\nat 20h 49m 36.08s, +53d 01' 29.65\".)\n\nWe have not established any optical variability at this time.\"",
  "circularId": 4381,
  "createdOn": 1135222554000,
  "email": "jules@astro.columbia.edu",
  "subject": "Possible GRB 051221B: MDM Optical Detection",
  "submitter": "Jules Halpern at Columbia U.  <jules@astro.columbia.edu>",
  "eventId": "GRB 051221B"
}