POSSIBLE SUPERNOVA IN IC1222
Guoyou Sun and Xing Gao, report the discovery of a possible supernova (mag approximately 17.7) on several 40-s survey images (limiting mag about 19.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 16.91339 UT using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The transient approximately located at R.A.=16h35m06.76s +46d12’53”.8 (equinox 2000.0). Which is about 25.2″ west and 3.7″ north of the center of the IC1222. Nothing is visible at this position on archival images taken on Sep. 20.63730 UT, 2019(limiting mag 19.0).
XMPGS1 C2020 03 16.91339 16 35 06.76 +46 12 53.8 17.7 V C42
All images can be seen from: http://xjltp.china-vo.org/XMPGS1.html
C42, Xingming Observatory, Mt. Nanshan. Observers Guoyou Sun and Xing Gao Measurer G.Sun 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.