{
  "subject": "GRB 260628A: Fermi GBM Final Real-time Localization",
  "circularId": 45053,
  "createdOn": 1782684224556,
  "eventId": "GRB 260628A",
  "submittedHow": "email",
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 21:51:24 UT on 28 Jun 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260628A (trigger 804376289.020238 / 260628911).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 308.2, Dec = -6.9 (J2000 degrees, equivalent to J2000 20h 32m, -6d 54'), with a statistical uncertainty of 14.3 degrees.\n\nThe angle from the Fermi LAT boresight is 63.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260628911/quicklook/glg_skymap_all_bn260628911.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/bn260628911/quicklook/glg_healpix_all_bn260628911.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260628911/quicklook/glg_lc_medres34_bn260628911.gif\n",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>"
}