TITLE:   GCN CIRCULAR
NUMBER:  44041
SUBJECT: GRB 260317A: Fermi GBM Final Localization
DATE:    26/03/17 21:55:00 GMT
FROM:    rhamburg@usra.edu

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

"At 20:01:51.98 UT on 17 March 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260317A (trigger 795470516/260317835).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 255.62, Dec = -18.51 (J2000 degrees, equivalent to J2000 17h 2m, -18d 30'),
with a statistical uncertainty of 13.33 degrees.

The angle from the Fermi LAT boresight is 93 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260317835/quicklook/glg_skymap_all_bn260317835.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/bn260317835/quicklook/glg_healpix_all_bn260317835.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260317835/quicklook/glg_lc_medres34_bn260317835.gif"