GCN Circular 5856
D. E. Vanden Berk (PSU), B. Sbarufatti (INAF-IASFPA), and S. D. Barthelmy (GSFC) report on behalf of the Swift team: UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 1605 seconds after the BAT trigger. Because of an Earth limb constraint, the spacecraft did not slew promptly to the BAT position. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 05:46:24.46 = 86.6019 DEC(J2000) = +64:12:38.5 = 64.2107 with a 1-sigma error radius of about 0.5 arc sec. This position is 83.0 arc sec. from the center of the BAT error circle, and 2.5 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.6 with a 1-sigma error of about 0.5 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.18.