GCN 45273: GRB 260802B: Fermi GBM Final Localization

2026-08-02T11:25:15.590Z | rev 0 | event: GRB 260802B
The Fermi GBM team reports the detection of a likely SHORT GRB

"At 08:59:48.38 UT on 02 August 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260802B (trigger 807353993/260802375).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 313.40, Dec = -18.52 (J2000 degrees, equivalent to J2000 20h 53m, -18d 31'),
with a statistical uncertainty of 29.68 degrees.

The angle from the Fermi LAT boresight is 94 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260802375/quicklook/glg_skymap_all_bn260802375.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260802375/quicklook/glg_healpix_all_bn260802375.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260802375/quicklook/glg_lc_medres34_bn260802375.gif"