TITLE: GCN CIRCULAR NUMBER: 35556 SUBJECT: Swift Trigger 1209406 is not an astrophysical event DATE: 24/01/17 17:43:28 GMT FROM: K.L. Page at U Leicester K. L. Page (U Leicester) report on behalf of the Neil Gehrels Swift Observatory Team: Swift trigger 1209406 was also caused by a star track loss-of-lock event, and is not an interesting event itself.