TITLE: GCN CIRCULAR NUMBER: 35437 SUBJECT: GRB 231230A: Prompt enhanced Swift-XRT position DATE: 23/12/30 02:04:59 GMT FROM: Phil Evans at U of Leicester <pae9@star.le.ac.uk> P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team: Using promptly downlinked XRT event data for GRB 231230A, we find an enhanced XRT position of the afterglow: RA, Dec: 245.21382, 58.12618 which is equivalent to: RA (J2000) = 16 20 51.32 Dec (J2000) = +58 07 34.2 with an uncertainty of 1.9 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/1205319. 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. View this GCN Circular online at https://gcn.nasa.gov/circulars/35437. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...