TITLE: GCN CIRCULAR NUMBER: 24743 SUBJECT: GRB 190604B: Prompt enhanced Swift-XRT position DATE: 19/06/04 16:01:14 GMT FROM: Phil Evans at U of Leicester P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team: Using promptly downlinked XRT event data for GRB 190604B, we find an enhanced XRT position of the afterglow: RA, Dec: 297.5413, -32.9782 which is equivalent to: RA (J2000) = 19 50 09.92 Dec (J2000) = -32 58 41.4 with an uncertainty of 2.0 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/906654. Position enhancement is is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular is an official product of the Swift-XRT team.