{
  "circularId": 40652,
  "subject": "GRB 250609A: Fermi GBM Final Real-time Localization",
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
  "createdOn": 1749459469520,
  "body": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 08:47:18 UT on 9 Jun 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250609A (trigger 771151643.61016 / 250609366).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 150.6, Dec = -8.4 (J2000 degrees, equivalent to J2000 10h 02m, -8d 24'), with a statistical uncertainty of 36.2 degrees.\n\nThe angle from the Fermi LAT boresight is 81.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250609366/quicklook/glg_skymap_all_bn250609366.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/bn250609366/quicklook/glg_healpix_all_bn250609366.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250609366/quicklook/glg_lc_medres34_bn250609366.gif\n",
  "submittedHow": "email",
  "bibcode": "2025GCN.40652....1F",
  "eventId": "GRB 250609A"
}