{
  "bibcode": "2011GCN.11732....1C",
  "body": "S. B. Cenko (UC Berkeley), E. O. Ofek, S. R. Kulkarni (Caltech), and A.\nRau (MPE Garching) report on behalf of a larger collaboration:\n\nWe have imaged the location of the possible X-ray afterglow\n(Source \"B\"; Nakahira et al., GCN 11725) of the MAXI GRB110213B (Negoro et\nal., GCN 11716) with the automated Palomar 60-inch telescope.\nObservations began at 3:38 UT on 2011 February 15 (~ 37.1 hours after the\nburst) in the r' filter.\n\nWe detect a source near the reported XRT position with coordinates\n(J2000.0):\n\n   02:47:01.41  +01:08:46.3\n\nUsing several nearby objects in the USNO-B1 catalog for reference, we\nmeasure a magnitude at this time of R = 19.8.  No object is present at\nthis location, either in the USNO-B1 catalog or the Digitized Sky Survey.\nGiven the positional coincidence and the relative brightness, we consider\nit likely this is the optical afterglow of GRB110213B.  However, future\nobservations to establish fading will be required for confirmation.",
  "circularId": 11732,
  "createdOn": 1297751064000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 110213B: P60 Optical Afterglow Candidate",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 110213B"
}