{
  "bibcode": "2011GCN.11743....1E",
  "body": "J. Elliott (MPE Garching), A. Nicuesa Guelbenzu (TLS Tautenburg), T.\nKruehler and J. Greiner (both MPE Garching) report on behalf of the GROND\nteam:\n\nWe observed the afterglow (Cenko et al., GCNs #11732, 11736) of GRB\n110213B (Negoro et al., GCN #11716 & Morii et al., GCN #11720)\nsimultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120,\n405) mounted at the 2.2m MPI/ESO telescope at La Silla Observatory\n(Chile).\n\nObservations started at 01:22 UT on 16.02.2011, 2.45 days after the GRB\ntrigger and were performed at high airmass.\n\nBased on a stacked image with exposure time of 460 s, we estimate a\npreliminary r' band magnitude of r' = 20.8 +/- 0.1 calibrated against SDSS\nfield stars. This implies a fading with respect to the earlier measurement\nof Cenko et al. (#GCN 11732). In addition, the SED of the object is\nconsistent with a power-law, and hence we confirm the source as the\noptical afterglow of GRB 110213B.",
  "circularId": 11743,
  "createdOn": 1297884901000,
  "email": "jonnyelliott@mpe.mpg.de",
  "subject": "GRB 110213B: GROND observations of the optical/NIR afterglow",
  "submitter": "Jonny Elliott at MPE/GROND  <jonnyelliott@mpe.mpg.de>",
  "eventId": "GRB 110213B"
}