TITLE: GCN CIRCULAR NUMBER: 26085 SUBJECT: GRB 191028B: BALROG localization (Fermi Trigger 593964489 / GRB 191028589) DATE: 19/10/28 14:33:10 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 593964489 at 14:08:04 on 28 Oct. 2019 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) = 291.6+/-11.1 deg Decl.(2000.0) = 69.8+/-3.8 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB191028589/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB191028589/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB191028589/json