TITLE: GCN CIRCULAR NUMBER: 45218 SUBJECT: GRB 260726A: Fermi GBM Final Real-time Localization DATE: 26/07/26 23:55:25 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 23:44:49 UT on 26 Jul 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260726A (trigger 806802294.070584 / 260726989). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 19.0, Dec = 52.4 (J2000 degrees, equivalent to J2000 01h 15m, 52d 23'), with a statistical uncertainty of 11.9 degrees. The angle from the Fermi LAT boresight is 13.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260726989/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/bn260726989/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260726989/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/45218. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...