POSSIBLE NOVA IN M31

Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 18.1) on severl 300-s survey images (limiting mag about 21.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 22.57039 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h42m40.41s +41d12'52".2 (equinox 2000.0). Which is about 977.8" east and 258.8" north of the center of the NGC224(M31).Nothing is visible at this position on archival images taken on Mar. 12.56498 UT(limiting mag 20.5).

NET UCAC-4
XM03MZ C2018 03 21.57039 00 42 40.41 +41 12 52.2 18.1 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM03MZ/XM03MZ.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.

 

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Discovery image taken by C42 on Mar.21.57039 UT,2018

SDSS IMAGE

Archival images