POSSIBLE NOVA IN M31
Guoyou Sun and Xing Gao, report the discovery of a possible nova (mag approximately 18.1) on severl 300-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Oct. 30.65074 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h42m40.64s +41d07’45”.8 (equinox 2000.0). Which is about 41.5″ west and 502.7″ south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 29.58119 UT(limiting mag 20.0).
XMNGS2 C2019 10 30.65074 00 42 40.64 +41 07 45.8 18.1R C42
All images can be seen from: http://www.xjltp.com/XOSS/XMNGS2/XMNGS2.htm C42,Xingming Observatory – NEXT, Mt. Nanshan. Observers G.Sun, X.Gao, Measurers G.Sun, 0.6-m f/8 Ritchey-Chretien telescope and CCD.
Discovery image taken by C42 on Oct. 30.65074 UT,2019