{
  "bibcode": "1999GCN...351....1B",
  "body": "Optical Observations of GRB 990506\n\nJ. S. Bloom, S. G. Djorgovski, S. R. Kulkarni, and B. A. Jacoby (Caltech),\non behalf of the Caltech-NRAO-CARA GRB collaboration, report:\n\n\"On June 11.25 UT, we obtained a total of 1500-s R-band integration of the\nfield of GRB 990506 (Hurley et al.; GCN #290) with the Low-Resolution\nImaging Spectrometer (LRIS) on the Keck II 10-m telescope on Mauna Kea,\nHawaii. An astrometric plate solution was obtained relative to the USNO\nA2.0 catalog with a statistical error of 0.23, 0.26 arcsec (ra, dec).\nCoincident with the position of the fading radio source (Taylor et al.;  \nGCN #350) is a faint extended (NE-SW) galaxy with an irregular (and\npossibly interacting) morphology.  Assuming the star at ra: 11:54:54.7,\ndec: -26:41:15.2 (J2000) has R=18.5 (Henden et al; GCN #305), we find a\npreliminary magnitude of the presumed host galaxy of GRB 990506 to be\nR=24.8 +/- 0.2.\n\nThis message can be cited.\"",
  "circularId": 351,
  "createdOn": 929471696000,
  "email": "jsb@astro.caltech.edu",
  "subject": "Optical Observations of GRB 990506",
  "submitter": "Josh Bloom at CIT  <jsb@astro.caltech.edu>",
  "eventId": "GRB 990506"
}