Аннотация:MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 23h 13m 27.17s +26d 26m 21.2s on 2012-09-18.63531 UT. The OT unfiltered magnitude is 18.1m (limit 18.5m). The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2012-09-11.70637 UT with unfiltered magnitude limit 19.8m.