TITLE:   GCN CIRCULAR
NUMBER:  44252
SUBJECT: GRB 260410A: Fermi GBM Final Real-time Localization
DATE:    26/04/10 07:14:31 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>

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

At 07:03:56 UT on 10 Apr 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260410A (trigger 797497441.997288 / 260410294).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 108.3, Dec = -28.9 (J2000 degrees, equivalent to J2000 07h 13m, -28d 53'), with a statistical uncertainty of 8.2 degrees.

The angle from the Fermi LAT boresight is 41.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260410294/quicklook/glg_skymap_all_bn260410294.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/bn260410294/quicklook/glg_healpix_all_bn260410294.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260410294/quicklook/glg_lc_medres34_bn260410294.gif