TITLE:   GCN CIRCULAR
NUMBER:  45378
SUBJECT: GRB 260813A: BALROG localization (Fermi Trigger 808341387 / GRB 260813803)
DATE:    26/08/13 19:45:08 GMT
FROM:    Jochen Greiner at MPE <jcgrog@mpe.mpg.de>

T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
808341387 at 19:16:22 on 13 Aug. 2026 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 is:
RA(2000.0) = 240.3 deg
Decl.(2000.0) = -61.7 deg
The 1 sigma statistical error radius is 3.0 deg.
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB260813803/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB260813803/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB260813803/json