{
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "createdOn": 1747406760287,
  "submittedHow": "email",
  "eventId": "GRB 250516A",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 14:35:29 UT on 16 May 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250516A (trigger 769098934.27533 / 250516608).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 333.2, Dec = 0.1 (J2000 degrees, equivalent to J2000 22h 12m, 0d 06'), with a statistical uncertainty of 8.5 degrees.\n\nThe angle from the Fermi LAT boresight is 27.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250516608/quicklook/glg_skymap_all_bn250516608.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/bn250516608/quicklook/glg_healpix_all_bn250516608.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250516608/quicklook/glg_lc_medres34_bn250516608.gif\n",
  "circularId": 40466,
  "subject": "GRB 250516A: Fermi GBM Final Real-time Localization",
  "bibcode": "2025GCN.40466....1F"
}