TITLE: GCN CIRCULAR NUMBER: 42933 SUBJECT: GRB 251202A: Fermi GBM Final Real-time Localization DATE: 25/12/02 02:01:27 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 01:50:52 UT on 2 Dec 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 251202A (trigger 786333057.306028 / 251202077). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 120.3, Dec = 43.5 (J2000 degrees, equivalent to J2000 08h 01m, 43d 30'), with a statistical uncertainty of 2.8 degrees. The angle from the Fermi LAT boresight is 70.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251202077/q... The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251202077/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251202077/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/42933. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...