{
  "eventId": "GRB 260603B",
  "format": "text/plain",
  "submitter": "Eva M. Palafox at INAOE <eva.palafox@gmail.com>",
  "subject": "GRB 260603B: Fermi GBM Final Localization",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 16:44:46.61 UT on 03 June 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 260603B (trigger 802197891/260603698).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 350.27, Dec = 39.20 (J2000 degrees, equivalent to J2000 +23h 21m, +39d 12'),\nwith a statistical uncertainty of 3.16 degrees.\n\nThe angle from the Fermi LAT boresight is 63 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260603698/quicklook/glg_skymap_all_bn260603698.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/bn260603698/quicklook/glg_healpix_all_bn260603698.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260603698/quicklook/glg_lc_medres34_bn260603698.gif\"",
  "circularId": 44808,
  "submittedHow": "web",
  "createdOn": 1780510591757
}