{
  "createdOn": 1776232284452,
  "submittedHow": "web",
  "circularId": 44300,
  "bibcode": "2026GCN.44300....1F",
  "format": "text/plain",
  "subject": "GRB 260415B: Fermi GBM Final Localization",
  "submitter": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
  "eventId": "GRB 260415B",
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 02:25:33.80 UT on 15 April 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 260415B (trigger 797912738/260415101).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 229.43, Dec = 24.94 (J2000 degrees, equivalent to J2000 15h 18m, +24d 56'),\nwith a statistical uncertainty of 9.03 degrees.\n\nThe angle from the Fermi LAT boresight is 41 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260415101/quicklook/glg_skymap_all_bn260415101.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/bn260415101/quicklook/glg_healpix_all_bn260415101.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260415101/quicklook/glg_lc_medres34_bn260415101.gif\""
}