TITLE:   GCN CIRCULAR
NUMBER:  44779
SUBJECT: GRB 260602B: Fermi GBM Final Localization
DATE:    26/06/03 01:14:31 GMT
FROM:    Lorenzo Scotton at UAH <lscottongcn@outlook.com>

The Fermi GBM team reports the detection of a likely SHORT GRB

"At 22:41:31.26 UT on 02 June 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260602B (trigger 802132896/260602945).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 187.55, Dec = -16.61 (J2000 degrees, equivalent to J2000 12h 30m, -16d 36'),
with a statistical uncertainty of 4.88 degrees.

The angle from the Fermi LAT boresight is 71 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260602945/quicklook/glg_skymap_all_bn260602945.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/bn260602945/quicklook/glg_healpix_all_bn260602945.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260602945/quicklook/glg_lc_medres34_bn260602945.gif"