POSSIBLE NOVA IN M31
Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 17.4) on severl 300-s survey images (limiting mag about 18.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around May. 28.89112 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h43m20.58s +41d25’42”.6 (equinox 2000.0). Which is about 408.8″ east and 574.1″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on May. 24.82138 UT(limiting mag 20.0).
XM12MZ C2019 05 28.89112 00 43 20.58 +41 25 42.6 17.4V C42
All images can be seen from: http://www.xjltp.com/XOSS/XM12MZ/XM12MZ.htm
C42,Xingming Observatory – NEXT, Mt. Nanshan. Observers M.Zhang,X.Gao,Measurers M.Zhang, 0.6-m f/8 Ritchey-Chretien telescope and CCD.
PNV 2019 05 28.8911* 00 43 20.58 +41 25 42.6 17.4 U 409E 574N M31 R 4
Discovery image taken by C42 on Apr. 14.66925 UT,2019