TITLE:   GCN CIRCULAR
NUMBER:  33421
SUBJECT: GRB 230308A: BALROG localization (Fermi Trigger 699975152 / GRB 230308564)
DATE:    23/03/08 14:14:58 GMT
FROM:    Jochen Greiner at MPE,Garching  <jcg@mpe.mpg.de>

F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
699975152 at 13:32:27 on 08 March 2023 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).

The best-fit position (1 sigma statistical errors) is:
RA(2000.0) = 104.5+/-7.6 deg
Decl.(2000.0) = 67.3+/-1.3 deg
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230308564/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230308564/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230308564/json