TITLE: GCN CIRCULAR NUMBER: 34657 SUBJECT: GRB 230911D: BALROG localization (Fermi Trigger 716111594/ GRB 230911329) DATE: 23/09/11 10:08:57 GMT FROM: Jochen Greiner at MPE B. Biltzinger, T. Preis, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger at 07:53:09 on 11 Sept. 2023 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) = 148.9+/-0.2 deg Decl.(2000.0) = -23.4+/-0.7 deg We estimate an additional systematic error of 1 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB230911329/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB230911329/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB230911329/json