{
  "bibcode": "2026GCN.43656....1F",
  "submittedHow": "email",
  "circularId": 43656,
  "subject": "GRB 260209A: Fermi GBM Final Real-time Localization",
  "createdOn": 1770605797606,
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 02:45:57 UT on 9 Feb 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260209A (trigger 792297962.23625 / 260209115).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 75.8, Dec = 33.0 (J2000 degrees, equivalent to J2000 05h 03m, 33d 00'), with a statistical uncertainty of 9.2 degrees.\n\nThe angle from the Fermi LAT boresight is 87.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260209115/quicklook/glg_skymap_all_bn260209115.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/bn260209115/quicklook/glg_healpix_all_bn260209115.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260209115/quicklook/glg_lc_medres34_bn260209115.gif\n",
  "eventId": "GRB 260209A",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>"
}