{
  "bibcode": "1999GCN...473....1H",
  "body": "A. Henden (USRA/USNO), C. Luginbuhl, F. Vrba, H. Harris,\nB. Canzian, J. Munn, S. Levine, H. Guetter (USNO), D. H.\nHartmann (Clemson Univ.), M.C. Jennings (IGPP, UCR visitor)\nreport:\n\nWe confirm the fading optical source identified by\nHalpern, et. al (GCN 472).  Accurate position from\na large set of USNO-A2.0 reference stars is\n  05:09:31.29  +11:17:07.4 (J2000)\n(internal error +/- 0.1arcsec)\n\nR-band observations, referenced to the star at\n05:09:39.30  +11:16:59.5 (J2000)\n\n  UT     r    telescope\n  0409  3.54   1.0-m\n  0511  3.81   1.3-m\n  0702  3.87   1.3-m\n\nwith photometric errors around 0.05mag.  It has\nbeen non-photometric here for the past few weeks,\nbut as soon as the weather improves, we will calibrate\nthis field in UBVRI.\n\nWe have additional R-band and V-band data, and\nwill be observing this field again this evening.\nOur infrared camera went on the 1.55-m this\nmorning, so we may attempt H-band observations\nas well.",
  "circularId": 473,
  "createdOn": 945449649000,
  "email": "aah@nofs.navy.mil",
  "subject": "GRB 991216, Optical Transient",
  "submitter": "Arne A. Henden at USNO/USRA  <aah@nofs.navy.mil>",
  "eventId": "GRB 991216"
}