TITLE: GCN CIRCULAR NUMBER: 3574 SUBJECT: GRB 050712: Swift XRT afterglow position DATE: 05/07/12 15:54:17 GMT FROM: David Burrows at PSU/Swift A. Falcone, D. N. Burrows, D. C. Morris, D. Grupe, J. L. Racusin, J. A. Nousek (PSU), J. Greiner (MPE), D. Hinshaw (GSFC-SPSYS), and N. Gehrels (GSFC) report on behalf of the Swift XRT team: The Swift BAT instrument detected GRB 050712 at 14:00:27.51 UT on 12 July 2005 (Grupe et al. 2005, GCN 3573). The observatory executed an automated slew to the BAT position and the XRT began taking data at 14:03:14 UT (166.1 s after the BAT trigger). The XRT was in Auto state but the source was not initially bright enough for a successful on-board centroid. In ground-processed data we find a bright uncataloged, rapidly fading X-ray source located at: RA(J2000) = 05:10:47.9, Dec(J2000) = +64:54:51.5. We estimate an uncertainty of about 6 arcseconds radius (90% containment). This source is located 56 arcseconds from the BAT position in GCN 3573.