TITLE: GCN CIRCULAR NUMBER: 28457 SUBJECT: GRB 200919B: Fermi GBM Final Real-time Localization DATE: 20/09/19 13:49:21 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 13:38:51 UT on 19 Sep 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200919B (trigger 622215536.063538 / 200919569). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 55.5, Dec = 35.6 (J2000 degrees, equivalent to J2000 03h 42m, 35d 36'), with a statistical uncertainty of 8.9 degrees. The angle from the Fermi LAT boresight is 105.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200919569/quicklook/glg_skymap_all_bn200919569.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200919569/quicklook/glg_healpix_all_bn200919569.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200919569/quicklook/glg_lc_medres34_bn200919569.gif