TITLE: GCN CIRCULAR NUMBER: 31950 SUBJECT: GRB 220426A: BALROG localization (Fermi Trigger 672648596/ GRB 220426285) DATE: 22/04/26 07:14:08 GMT FROM: Jochen Greiner at MPE,Garching B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 672648596 at 06:49:51 on 26 April 2022 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) = 339.6+/-0.3 deg Decl.(2000.0) = -24.0+/-0.3 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB220426285/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB220426285/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB220426285/json