POSSIBLE NOVA IN M31
Tianyu Tu, Jianlin Xu, Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 17.8) on several 40-s survey images (limiting mag about 19.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Sep. 22.64457 UT using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The transient approximately located at R.A.=00h44m10.73s +41d54’22”.0 (equinox 2000.0). Which is about 974.2″ east and 2293.5″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Sep. 21.57181 UT(limiting mag 19.0).
NET UCAC-4
PSP19C C2019 09 22.64457 00 44 10.73 +41 54 22.0 17.8 V C42
All images can be seen from: http://www.xjltp.com/XOSS/PSP19C/PSP19C.htm
C42, Xingming Observatory, Mt. Nanshan. Observers Tianyu Tu, Jianlin Xu, Mi Zhang and Xing Gao Measurer M.Zhang 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.
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Discovery image taken by C42 on Sep. 22.64457 UT, 2019
Archival images
PS images