Аннотация:AT 2020cna MASTER-SAAO auto-detection system ( Lipunov et al., “MASTER Global Robotic Net”, Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 04h 12m 06.51s -43d 24m 19.7s on 2020-02-12.88860 UT. The OT unfiltered magnitude is 16.6m (mlim=19.7).