TITLE: GCN CIRCULAR NUMBER: 43995 SUBJECT: GRB 260313A: A Correction to the Fermi GBM Final Localization DATE: 26/03/13 18:31:37 GMT FROM: oliver.roberts@universityofgalway.ie O.J. Roberts (Uni. of Galway, Ireland) reports on behalf of the Fermi Gamma-ray Burst Monitor Team. "At 12:00:28.58 UT on 13 March 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260313A (trigger 795096033/260312500). An on-ground calculated location, using the Fermi GBM trigger data, was initially reported in GCN 43987 by the GBM Team. Further analysis found the location of the short GRB to be inaccurate. We report the updated/refined location to be RA = 241.16, Dec = 5.80 (J2000 degrees, equivalent to J2000 16h 05m, 05d 48'), with a statistical uncertainty of 5.8 degrees. The angle from the Fermi LAT boresight with this new position is 15 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260312500/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/bn260312500/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260312500qu..." View this GCN Circular online at https://gcn.nasa.gov/circulars/43995. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...