TITLE: GCN CIRCULAR NUMBER: 44707 SUBJECT: GRB 260526A: Fermi GBM Final Real-time Localization DATE: 26/05/26 23:14:33 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 23:04:00 UT on 26 May 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260526A (trigger 801529445.20122 / 260526961). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 40.1, Dec = 43.9 (J2000 degrees, equivalent to J2000 02h 40m, 43d 53'), with a statistical uncertainty of 3.8 degrees. The angle from the Fermi LAT boresight is 30.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260526961/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/bn260526961/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260526961/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/44707. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...