TITLE:   GCN CIRCULAR
NUMBER:  42626
SUBJECT: GRB 251108A: Fermi GBM Final Localization Correction
DATE:    25/11/09 00:49:37 GMT
FROM:    Bagrat Mailyan at Florida Tech <mbagrat@gmail.com>

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

"At 21:19:46.26 UT on 08 November 2025, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 251108A (trigger 784329591/251108889).
This trigger was initially classified as GRB by the flight software.

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 144.63, Dec = 8.03 (J2000 degrees, equivalent to J2000 9h 39m, +8d 2'),
with a statistical uncertainty of 3.23 degrees.

The angle from the Fermi LAT boresight is 10 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251108889/quicklook/glg_skymap_all_bn251108889.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251108889/quicklook/glg_healpix_all_bn251108889.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251108889/quicklook/glg_lc_medres34_bn251108889.gif"