Аннотация:MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 04h 58m 04.40s +21d 23m 06.8s on 2012-09-26.76811 UT. The OT unfiltered magnitude is 14.9m (limit 18.9m). The OT is seen in 2 images. We have reference image without OT on 2011-11-29.76346 UT with magnitude limit in ’R’ filter 18.6m.