{
  "createdOn": 1746433149683,
  "subject": "GRB 250505A: Fermi GBM Final Real-time Localization",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 08:08:39 UT on 5 May 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250505A (trigger 768125324.539978 / 250505339).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 104.6, Dec = -10.3 (J2000 degrees, equivalent to J2000 06h 58m, -10d 18'), with a statistical uncertainty of 3.4 degrees.\n\nThe angle from the Fermi LAT boresight is 22.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250505339/quicklook/glg_skymap_all_bn250505339.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/bn250505339/quicklook/glg_healpix_all_bn250505339.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250505339/quicklook/glg_lc_medres34_bn250505339.gif\n",
  "bibcode": "2025GCN.40348....1F",
  "eventId": "GRB 250505A",
  "submittedHow": "email",
  "circularId": 40348
}