{
  "submittedHow": "email",
  "circularId": 41819,
  "createdOn": 1757711870501,
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 21:06:23 UT on 12 Sep 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250912A (trigger 779403988.636734 / 250912879).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 13.9, Dec = 24.3 (J2000 degrees, equivalent to J2000 00h 55m, 24d 18'), with a statistical uncertainty of 7.9 degrees.\n\nThe angle from the Fermi LAT boresight is 62.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250912879/quicklook/glg_skymap_all_bn250912879.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/bn250912879/quicklook/glg_healpix_all_bn250912879.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250912879/quicklook/glg_lc_medres34_bn250912879.gif\n",
  "eventId": "GRB 250912A",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "bibcode": "2025GCN.41819....1F",
  "subject": "GRB 250912A: Fermi GBM Final Real-time Localization"
}