TITLE: GCN CIRCULAR NUMBER: 43310 SUBJECT: GRB 260102B: Fermi GBM Final Real-time Localization DATE: 26/01/02 21:23:33 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 SHORT GRB At 21:12:03 UT on 2 Jan 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260102B (trigger 789081128.373244 / 260102883). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 60.7, Dec = -67.8 (J2000 degrees, equivalent to J2000 04h 02m, -67d 47'), with a statistical uncertainty of 17.7 degrees. The angle from the Fermi LAT boresight is 23.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260102883/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/bn260102883/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260102883/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/43310. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...