{
  "bibcode": "1999GCN...321....1C",
  "body": "S. Covino, D. Fugazza, G. Ghisellini, D. Lazzati, of the Observatory\nof Brera (Milan, Italy) report:\n\nWe have obtained R=18.96+-0.02 for the OT of GRB990510,\nobserved with 3x10 second exposures of VLT-FORS1 at May 11.0468.\nThis estimate is based on the USNO star at RA = 13:38:00.82, \nDEC=-80:29:11.7, for which we have assumed R = 16.5.\nThe faint object 2\" south of the OT is also visible, with \napproximately R=21.9+-0.2 (see GCN 314).\n\nThis message is citeable.",
  "circularId": 321,
  "createdOn": 926523782000,
  "email": "gabriele@merate.mi.astro.it",
  "subject": "GRB990510: optical observation",
  "submitter": "Gabriele Ghisellini at Obs.Astro. di Brera  <gabriele@merate.mi.astro.it>",
  "eventId": "GRB 990510"
}