TITLE: GCN CIRCULAR NUMBER: 8931 SUBJECT: GRB 090303: Fermi GBM detection DATE: 09/03/04 17:23:12 GMT FROM: Arne Rau at MPE Arne Rau (MPE) reports on behalf of the Fermi GBM Team: "At 13:00:37.04 UT on 03 March 2009, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located a weak source (trigger 257778039 / 090303.542). The human-in-the-loop location is RA=223.7, Dec=-68.2 (J2000 degrees) with an uncertainty of 12.1 degrees(radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The most likely nature of the source is a GRB, but it could also be an SGR. Since the source is very weak, it is not possible to find a more reliable on-ground calculated location and to perform any spectral analysis."