{
  "createdOn": 1792475266219,
  "subject": "GRB 261020A: Fermi GBM Final Real-time Localization",
  "eventId": "GRB 261020A",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 05:37:08 UT on 20 Oct 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 261020A (trigger 814167433.941196 / 261020234).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 284.4, Dec = -33.9 (J2000 degrees, equivalent to J2000 18h 57m, -33d 53'), with a statistical uncertainty of 2.5 degrees.\n\nThe angle from the Fermi LAT boresight is 86.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261020234/quicklook/glg_skymap_all_bn261020234.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/bn261020234/quicklook/glg_healpix_all_bn261020234.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261020234/quicklook/glg_lc_medres34_bn261020234.gif\n",
  "submittedHow": "email",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "circularId": 45992
}