{
  "bibcode": "1999GCN...279....1Y",
  "body": "I.-A. Yadigaroglu, C. Liu & J. P. Halpern (Columbia U.), H. E. Bond (STScI)\nreport on behalf of the MDM Observatory GRB follow-up team:\n \n\"We imaged in the V band the location of the LOTIS optical candidate (GCN\n277) for GRB 990316 on Mar 19.22 using the MDM Observatory 2.4m telescope. \nA total of 40 minutes exposure was obtained in seeing of 1.0 arcsec. The\nimage was compared to an image of the same region obtained the previous\nnight at the KPNO 4m telescope (GCN 278). No fading objects are found in\na conservative 2 arcmin radius around the LOTIS position. A calibration\nusing a Landolt standard gives plate limits of 23.9 and 23.0 for the Mar\n19.22 and 18.28 images respectively. For reference, the magnitudes of two\nnearby stars are V = 20.25 at (J2000) RA 9:50:14.6, Dec -4:56:32.3, and\nV = 20.14 at RA 9:50:14.9, Dec -4:56:56.3. An asteroid with V = 22.6 is\ndetected on Mar 18.28 an arcminute away from the LOTIS position.\"\n\nThis message may be cited.",
  "circularId": 279,
  "createdOn": 921845491000,
  "email": "ion@astro.columbia.edu",
  "subject": "GRB990316, Optical observations",
  "submitter": "Ion-Alexis Yadigaroglu at Columbia U  <ion@astro.columbia.edu>",
  "eventId": "GRB 990316"
}