TITLE: GCN CIRCULAR NUMBER: 35404 SUBJECT: GRB 231219A: Fermi GBM Final Real-time Localization DATE: 23/12/19 17:22:54 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 17:12:22 UT on 19 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231219A (trigger 724698747.778088 / 231219717). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 231.6, Dec = 58.0 (J2000 degrees, equivalent to J2000 15h 26m, 58d 00'), with a statistical uncertainty of 14.2 degrees. The angle from the Fermi LAT boresight is 21.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231219717/q... The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231219717/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231219717/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/35404. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...