TITLE: GCN CIRCULAR NUMBER: 8641 SUBJECT: GRB 081206B: Fermi GBM detection DATE: 08/12/08 16:52:41 GMT FROM: Andreas von Kienlin at MPE A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: "At 14:29:30.69 UT on 06 December 2008, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 081206B (trigger 250266571 / 081206604). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 346.2, Dec = -33.1 (J2000 degrees, equivalent to J2000 23h 05m, -33d 06'), with a statistical uncertainty of 13.2 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 82 degrees. The GBM light curve shows a single peak with a duration of about 10 s. Since the source is weak, the time-averaged spectrum is poorly constrained."