{
  "subject": "GRB 260910B: Fermi GBM Final Real-time Localization",
  "createdOn": 1789082833421,
  "submittedHow": "email",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "eventId": "GRB 260910B",
  "circularId": 45550,
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 23:16:44 UT on 10 Sep 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260910B (trigger 810775009.56521 / 260910970).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 260.8, Dec = -0.7 (J2000 degrees, equivalent to J2000 17h 23m, 0d 42'), with a statistical uncertainty of 6.2 degrees.\n\nThe angle from the Fermi LAT boresight is 94.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260910970/quicklook/glg_skymap_all_bn260910970.png\n\nThe HEALPix FITS file, including the estimated localization systematic, can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260910970/quicklook/glg_healpix_all_bn260910970.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260910970/quicklook/glg_lc_medres34_bn260910970.gif\n",
  "bibcode": "2026GCN.45550....1F"
}