TITLE:   GCN CIRCULAR
NUMBER:  41357
SUBJECT: GRB 250814A: Fermi GBM Final Real-time Localization
DATE:    25/08/14 07:45:48 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 LONG GRB

At 07:35:09 UT on 14 Aug 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250814A (trigger 776849714.277078 / 250814316).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 298.0, Dec = 47.5 (J2000 degrees, equivalent to J2000 19h 52m, 47d 30'), with a statistical uncertainty of 8.6 degrees.

The angle from the Fermi LAT boresight is 30.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250814316/quicklook/glg_skymap_all_bn250814316.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/bn250814316/quicklook/glg_healpix_all_bn250814316.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250814316/quicklook/glg_lc_medres34_bn250814316.gif