TITLE: GCN CIRCULAR NUMBER: 23454 SUBJECT: GRB 181126A: Prompt enhanced Swift-XRT position DATE: 18/11/26 10:23:20 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 181126A, we find an enhanced XRT position of the afterglow: RA, Dec: 152.3477, -29.6875 which is equivalent to: RA (J2000) = 10 09 23.46 Dec (J2000) = -29 41 15.0 with an uncertainty of 2.5 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/873539. 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.