TITLE: GCN CIRCULAR NUMBER: 31610 SUBJECT: GRB 220219A: BALROG localization (Fermi Trigger / GRB 220219473) DATE: 22/02/19 12:16:28 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 11:21:34 on 19 Feb. 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) = 37.8+/-0.7 deg Decl.(2000.0) = 17.0+/-1.1 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB220219473/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB220219473/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB220219473/json