{
  "createdOn": 1761434353879,
  "circularId": 42449,
  "subject": "GRB 251025C: Fermi GBM Final Real-time Localization",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "bibcode": "2025GCN.42449....1F",
  "submittedHow": "email",
  "eventId": "GRB 251025C",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 23:08:40 UT on 25 Oct 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 251025C (trigger 783126525.293544 / 251025964).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 170.7, Dec = 54.9 (J2000 degrees, equivalent to J2000 11h 22m, 54d 53'), with a statistical uncertainty of 2.2 degrees.\n\nThe angle from the Fermi LAT boresight is 103.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251025964/quicklook/glg_skymap_all_bn251025964.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/bn251025964/quicklook/glg_healpix_all_bn251025964.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251025964/quicklook/glg_lc_medres34_bn251025964.gif\n"
}