TITLE: GCN CIRCULAR NUMBER: 10713 SUBJECT: GRB 100504A: UVOT-enhanced XRT position DATE: 10/05/04 20:33:23 GMT FROM: Jirong Mao at INAF-OAB J. Mao (INAF-OAB) reports on behalf of the Swift-XRT team: The Swift-XRT observation of GRB 100504A started on 2010 May 4 at 19:22:02.1 UT, 62.6 s after the BAT trigger. We detected a bright, single X-ray source. The UVOT-enhanced position is: RA (J2000): 17h 02m 17.22s Dec (J2000): -35d 35' 14.4'' with an uncertainty of 2.2 arcsec (radius, 90% confidence). This circular is an official product of the Swift-XRT team.