TITLE: GCN CIRCULAR NUMBER: 13183 SUBJECT: GRB 120401A: Prompt enhanced Swift-XRT position DATE: 12/04/01 06:16:27 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 120401A, we find an enhanced XRT position of the afterglow: RA, Dec: 58.0819, -17.6359 which is equivalent to: RA (J2000) = 03 52 19.67 Dec (J2000) = -17 38 09.2 with an uncertainty of 2.1 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/519043. 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.