TITLE: GCN CIRCULAR NUMBER: 30073 SUBJECT: GRB 210524A: BALROG localization (Fermi Trigger 643525204 / GRB 210524208) DATE: 21/05/24 10:13:22 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 643525204 at 04:59:59 on 24 May 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) = 343.2+/-0.7 deg Decl.(2000.0) = -47.2+/-0.4 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB210524208/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB210524208/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB210524208/json