TITLE: GCN CIRCULAR NUMBER: 45237 SUBJECT: GRB 260728A: Fermi GBM Final Localization DATE: 26/07/28 06:52:53 GMT FROM: oliver.roberts@universityofgalway.ie The Fermi GBM team reports the detection of a likely LONG GRB "At 04:37:01.48 UT on 28 July 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260728A (trigger 806906226/260728192). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 262.86, Dec = -48.57 (J2000 degrees, equivalent to J2000 17h 31m, -48d 34'), with a statistical uncertainty of 3.53 degrees. The angle from the Fermi LAT boresight is 64 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260728192/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/bn260728192/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260728192/q..." View this GCN Circular online at https://gcn.nasa.gov/circulars/45237. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...