GCN Circular 43726

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

"At 17:40:09.97 UT on 13 February 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260213B (trigger 792697214/260213736).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 145.98, Dec = -40.63 (J2000 degrees, equivalent to J2000 9h 43m, -40d 37'),
with a statistical uncertainty of 3.63 degrees.

The angle from the Fermi LAT boresight is 95 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260213736/quicklook/glg_skymap_all_bn260213736.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/bn260213736/quicklook/glg_healpix_all_bn260213736.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260213736/quicklook/glg_lc_medres34_bn260213736.gif"