{
  "subject": "GRB 261009A: Fermi GBM Final Real-time Localization",
  "circularId": 45879,
  "createdOn": 1791584982885,
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 22:19:11 UT on 9 Oct 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 261009A (trigger 813277156.325786 / 261009930).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 116.9, Dec = 45.5 (J2000 degrees, equivalent to J2000 07h 47m, 45d 30'), with a statistical uncertainty of 3.2 degrees.\n\nThe angle from the Fermi LAT boresight is 12.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261009930/quicklook/glg_skymap_all_bn261009930.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/bn261009930/quicklook/glg_healpix_all_bn261009930.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261009930/quicklook/glg_lc_medres34_bn261009930.gif\n",
  "eventId": "GRB 261009A",
  "submittedHow": "email",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>"
}