TITLE: GCN CIRCULAR NUMBER: 31763 SUBJECT: GRB 220317A: Fermi GBM Final Real-time Localization DATE: 22/03/17 12:58:50 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 12:48:30 UT on 17 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220317A (trigger 669214115.664266 / 220317534). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 172.0, Dec = -11.3 (J2000 degrees, equivalent to J2000 11h 28m, -11d 18'), with a statistical uncertainty of 13.3 degrees. The angle from the Fermi LAT boresight is 48.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220317534/quicklook/glg_skymap_all_bn220317534.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/bn220317534/quicklook/glg_healpix_all_bn220317534.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220317534/quicklook/glg_lc_medres34_bn220317534.gif