TITLE: GCN CIRCULAR NUMBER: 17463 SUBJECT: GRB 150213A: Fermi GBM detection DATE: 15/02/13 16:09:01 GMT FROM: Binbin Zhang at UAH Bin-Bin Zhang (UAH) reports on behalf of the Fermi GBM Team: "At 00:01:48.70 UT on 13 February 2015, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 150213A (trigger 445478511 / 150213001). The on-ground calculated location, using the GBM trigger data, is RA = 95.29, DEC = -4.85 (J2000 degrees), with an uncertainty of 1.0 degrees (radius, 1-sigma containment,statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). This trigger resulted in an Autonomous Repoint Request (ARR) that was accepted and the spacecraft slewed to the GBM in-flight location. The angle from the Fermi LAT boresight at trigger time is 77 degrees. The GBM light curve consists of a single main FRED-like peak with a duration (T90) of about 4.1 s (50-300 keV). The time-averaged spectrum from T0+0.5 s to T0+4.6 s is best fit by a a Band function with Epeak = 57.8 +/- 0.6 keV, alpha = -1.1+/- 0.02, and beta = -2.6 +/- 0.03. The event fluence (10-1000 keV) in this time interval is (2.78 +/- 0.02)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+1.76 s in the 10-1000 keV band is 189.0 +/- 1.1 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."