{
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "subject": "GRB 250922A: Fermi GBM Final Localization",
  "submittedHow": "web",
  "submitter": "rhamburg@usra.edu",
  "format": "text/plain",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 03:07:21.46 UT on 22 September 2025, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 250922A (trigger 780203246/250922130).\nThis trigger was initially classified as Below Horizon by the flight software,\nbut is in fact a GRB.\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 353.54, Dec = 0.42 (J2000 degrees, equivalent to J2000 23h 34m, +0d 25'),\nwith a statistical uncertainty of 6.13 degrees.\n\nThe angle from the Fermi LAT boresight is 86 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250922130/quicklook/glg_skymap_all_bn250922130.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/bn250922130/quicklook/glg_healpix_all_bn250922130.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250922130/quicklook/glg_lc_medres34_bn250922130.gif\"",
  "editedOn": 1758547863966,
  "eventId": "GRB 250922A",
  "version": 3,
  "circularId": 41933,
  "bibcode": "2025GCN.41933....1F",
  "createdOn": 1758516739589
}