TITLE: GCN CIRCULAR NUMBER: 9965 SUBJECT: Correction: GRB 090929B: Enhanced Swift-XRT position DATE: 09/09/29 14:09:34 GMT FROM: Kim Page at U.of Leicester K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team: GCN Circ. 9964 referred to GRB 090929 when, in fact, the position given is for GRB 090929B (GCN Circ. 9963). The correct text should read Using 2438 s of XRT Photon Counting mode data and 2 UVOT images for GRB 090929B, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 117.72015, -0.65764 which is equivalent to: RA (J2000): 07h 50m 52.84s Dec (J2000): -00d 39' 27.5" with an uncertainty of 1.8 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). We apologise for any confusion.