TITLE: GCN CIRCULAR NUMBER: 10308 SUBJECT: GRB 100103A: Swift/XRT position DATE: 10/01/03 21:58:26 GMT FROM: Jamie A. Kennea at PSU/Swift-XRT J. A. Kennea (PSU) and W. H. Baumgartner (GSFC/UMBC) report on behalf of the Swift Team: Swift began a target of opportunity observation of the INTEGRAL detected GRB 100103A (GCN #10307), at 18:36UT on January 3rd, 2010, approximately 54 mins after the INTEGRAL detection. In approximately 2.5 ks of Photon Counting mode data, we find an uncatalogued source in the XRT field of view with a preliminary position of RA, Dec (J2000) = 112.37327, -34.487811, which is equivalent to: RA(J2000) = 07h 29m 29.5s Dec(J2000) = -34d 29' 16.1" with an estimated uncertainty of 6 arcmins radius (90% confidence). This position lies 0.5 arcmins from the INTEGRAL reported position. We currently cannot confirm if this source is fading.