//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 33017 SUBJECT: GRB 221203B: Fermi GBM Final Real-time Localization DATE: 22/12/03 21:26:43 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 21:16:22 UT on 3 Dec 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 221203B (trigger 691794987.572292 / 221203886). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 287.5, Dec = 34.1 (J2000 degrees, equivalent to J2000 19h 10m, 34d 06'), with a statistical uncertainty of 11.3 degrees. The angle from the Fermi LAT boresight is 65.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221203886/quicklook/glg_skymap_all_bn221203886.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221203886/quicklook/glg_healpix_all_bn221203886.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221203886/quicklook/glg_lc_medres34_bn221203886.gif