TITLE: GCN CIRCULAR NUMBER: 16366 SUBJECT: GRB 140606B: Swift XRT position DATE: 14/06/08 15:34:22 GMT FROM: Vanessa Mangano at PSU V. Mangano (PSU), P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team: We have analysed 5 ks of XRT data for the Fermi/GBM-detected burst: GRB 140606B, from 184.4 ks to 192.6 ks after the Fermi/GBM trigger. The data are entirely in Photon Counting (PC) mode. Using 4979 s of XRT Photon Counting mode data and 4 UVOT images, 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 = 328.12501, 32.01458 which is equivalent to: RA (J2000): 21 52 30.00 Dec (J2000): +32 00 52.5 with an uncertainty of 2.3 arcsec (radius, 90% confidence). This position is a 5.2 arcsec from source iPTF 14bfu from GCN Circular 16360. 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 cannot determine at the present time whether the source is fading. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020384. This circular is an official product of the Swift-XRT team.