{
  "format": "text/plain",
  "submittedHow": "web",
  "subject": "GRB 261011B: Fermi GBM Final Localization",
  "circularId": 45910,
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "body": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 17:26:50.57 UT on 11 October 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 261011B (trigger 813432415/261011727).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA =  185.63, Dec = -38.37 (J2000 degrees, equivalent to J2000 12h 23m, -38d 22')\nwith a statistical uncertainty of 4.2 degrees.\n\nThe angle from the Fermi LAT boresight is 83 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261011727/quicklook/glg_skymap_all_bn261011727.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/bn261011727/quicklook/glg_healpix_all_bn261011727.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn261011727/quicklook/glg_lc_medres34_bn261011727.gif\"",
  "createdOn": 1791754810060,
  "eventId": "GRB 261011B",
  "submitter": "Eva MP at INAOE <eva.palafox@gmail.com>"
}