TITLE:   GCN CIRCULAR
NUMBER:  34101
SUBJECT: GRB 230628A: Fermi GBM Final Localization
DATE:    23/06/28 11:26:43 GMT
FROM:    Andreas von Kienlin at MPE <azk@mpe.mpg.de>

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

"At 05:35:36.16 UT on 28 June 2023, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 230628A (trigger 709623341/230628233).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 139.19, Dec = -11.54 (J2000 degrees, equivalent to J2000 9h 16m, -11d 32'),
with a statistical uncertainty of 16.84 degrees.

The angle from the Fermi LAT boresight is 51 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230628233/quicklook/glg_skymap_all_bn230628233.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/bn230628233/quicklook/glg_healpix_all_bn230628233.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230628233/quicklook/glg_lc_medres34_bn230628233.gif"