{
  "subject": "GRB 230409A: Fermi GBM Final Real-time Localization",
  "eventId": "GRB 230409A",
  "bibcode": "2023GCN.33591....1F",
  "createdOn": 1681001927000,
  "circularId": 33591,
  "submitter": "Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply@GIOC.nsstc.nasa.gov>",
  "email": "do_not_reply@GIOC.nsstc.nasa.gov",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 00:48:13 UT on 9 Apr 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230409A (trigger 702694098.828404 / 230409033).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 328.4, Dec = 25.1 (J2000 degrees, equivalent to J2000 21h 53m, 25d 06'), with a statistical uncertainty of 4.0 degrees.\n\nThe angle from the Fermi LAT boresight is 77.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230409033/quicklook/glg_skymap_all_bn230409033.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/2023/bn230409033/quicklook/glg_healpix_all_bn230409033.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230409033/quicklook/glg_lc_medres34_bn230409033.gif"
}