TITLE: GCN CIRCULAR NUMBER: 6736 SUBJECT: GRB 070810: enhanced Swift-XRT position DATE: 07/08/10 08:28:14 GMT FROM: Phil Evans at U of Leicester P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team. Using 505 s of overlapping XRT Photon Counting mode and UVOT V-band data for GRB 070810, 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 = 189.96368, +10.75080 which is equivalent to: RA (J2000): 12d 39' 51.28" Dec (J2000): +10h 45m 02.9s with an uncertainty of 1.9 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, astro-ph/0708.0986 http://www.swift.ac.uk/xrt_positions/Goad.pdf). This circular was automatically generated, and is an official product of the Swift-XRT team.