TITLE: GCN CIRCULAR NUMBER: 17301 SUBJECT: GRB 150110C: Swift-XRT observations DATE: 15/01/11 20:01:39 GMT FROM: Kim Page at U.of Leicester K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team: Swift-XRT has observed the error circle of the MAXI GRB 150110C in a series of observations tiled on the sky. The total exposure time is 3.8 ks spread over 4 fields; the maximum exposure within the sky observed was 2.4 ks. The observations started 54.2 ks after the MAXI trigger. Within these data we detect an uncatalogued X-ray source at RA, Dec = 68.48007, -16.96802 which is equivalent to: RA (J2000.0) = 04h 33m 55.22s Dec (J2000.0) = -16d 58' 04.9" with an uncertainty of 7.0 arcsec (radius, 90% confidence). The source has a mean X-ray (0.3-10 keV) count rate of 4.0 (+/- 2.2) x 10^-3 count s^-1. The exposure at this location was 1.5 ks. At the present time we cannot be sure whether or not this source is the afterglow. The results of the automatic processing for this source are available at http://www.swift.ac.uk/xrt_products/TILED_GRB00037/index_1.php This circular is an official product of the Swift-XRT team.