TITLE: GCN CIRCULAR NUMBER: 45286 SUBJECT: GRB 260805A: Fermi GBM Final Localization DATE: 26/08/05 11:02:33 GMT FROM: Marianna Dafčíková at Masaryk University <500025@mail.muni.cz> The Fermi GBM team reports the detection of a likely LONG GRB "At 09:18:33.28 UT on 05 August 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260805A (trigger 807614318/260805388). This trigger was initially classified as Distant Particles by the flight software, but is in fact a GRB. The on-ground calculated location, using the Fermi GBM trigger data, is RA = 252.53, Dec = 34.93 (J2000 degrees, equivalent to J2000 16h 50m, +34d 56'), with a statistical uncertainty of 3.11 degrees. The angle from the Fermi LAT boresight is 112 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260805388/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/bn260805388/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260805388/q..." View this GCN Circular online at https://gcn.nasa.gov/circulars/45286. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...