Аннотация:MASTER-Kislovodsk auto-detection system ( Lipunov et al., “MASTER Global Robotic Net”,Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 05h 49m 05.59s +58d 25m 07.4s on 2020-03-04.89435 UT. The OT unfiltered magnitude is 17.7m (mlim=18.7).