TITLE: GCN CIRCULAR NUMBER: 13974 SUBJECT: Swift-BAT trigger 538575 is not astrophysical DATE: 12/11/18 22:38:44 GMT FROM: Scott Barthelmy at NASA/GSFC S.D. Barthelmy (GSFC), P. Evans (U Leicester), J.Cummings (NASA/UMBC) on behalf of the Swift team report: Swift trigger 538575 was due to a noise fluctuation in the image domain near (8 arcmin) the catalog source NGC7462. This 8 arcmin distance, a low image significance (6.13 sigma), and the lack of an XRT source strongly indicates that this trigger is non-astrophysical.