{
  "bibcode": "2025GCN.41510....1F",
  "createdOn": 1755980456870,
  "circularId": 41510,
  "eventId": "GRB 250823A",
  "subject": "GRB 250823A: Fermi GBM Final Real-time Localization",
  "submittedHow": "email",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 20:10:10 UT on 23 Aug 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250823A (trigger 777672615.66839 / 250823840).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 315.5, Dec = -23.6 (J2000 degrees, equivalent to J2000 21h 02m, -23d 36'), with a statistical uncertainty of 8.7 degrees.\n\nThe angle from the Fermi LAT boresight is 70.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250823840/quicklook/glg_skymap_all_bn250823840.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/2025/bn250823840/quicklook/glg_healpix_all_bn250823840.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250823840/quicklook/glg_lc_medres34_bn250823840.gif\n",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>"
}