TITLE: GCN CIRCULAR NUMBER: 44347 SUBJECT: GRB 260419B: Fermi GBM Final Real-time Localization DATE: 26/04/19 08:00:23 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 07:49:50 UT on 19 Apr 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260419B (trigger 798277795.43596 / 260419326). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 137.1, Dec = -33.8 (J2000 degrees, equivalent to J2000 09h 08m, -33d 47'), with a statistical uncertainty of 9.6 degrees. The angle from the Fermi LAT boresight is 62.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260419326/q... The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260419326/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260419326/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/44347. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...