{
  "createdOn": 1767389013906,
  "subject": "GRB 260102B: Fermi GBM Final Real-time Localization",
  "eventId": "GRB 260102B",
  "bibcode": "2026GCN.43310....1F",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "circularId": 43310,
  "submittedHow": "email",
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 21:12:03 UT on 2 Jan 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260102B (trigger 789081128.373244 / 260102883).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 60.7, Dec = -67.8 (J2000 degrees, equivalent to J2000 04h 02m, -67d 47'), with a statistical uncertainty of 17.7 degrees.\n\nThe angle from the Fermi LAT boresight is 23.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260102883/quicklook/glg_skymap_all_bn260102883.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/bn260102883/quicklook/glg_healpix_all_bn260102883.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260102883/quicklook/glg_lc_medres34_bn260102883.gif\n"
}