TITLE: GCN CIRCULAR NUMBER: 29354 SUBJECT: GRB 210126A: BALROG localization (Fermi Trigger / GRB 210126417) DATE: 21/01/26 10:48:07 GMT FROM: Jochen Greiner at MPE,Garching 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 at 10:00:05 on 26 Jan. 2021 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) = 90.2+/-6.6 deg Decl.(2000.0) = -66.0+/-3.3 deg We estimate an additional systematic error of 1 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB210126417/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB210126417/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB210126417/json