TITLE:   GCN CIRCULAR
NUMBER:  33172
SUBJECT: GRB 230116B: Fermi GBM Final Real-time Localization
DATE:    23/01/16 09:09:37 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 08:59:06 UT on 16 Jan 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230116B (trigger 695552351.674084 / 230116374).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 113.6, Dec = -40.4 (J2000 degrees, equivalent to J2000 07h 34m, -40d 23'), with a statistical uncertainty of 2.1 degrees.

The angle from the Fermi LAT boresight is 102.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230116374/quicklook/glg_skymap_all_bn230116374.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230116374/quicklook/glg_healpix_all_bn230116374.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230116374/quicklook/glg_lc_medres34_bn230116374.gif