POSSIBLE NOVA IN M31

Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 17.9) on severl 200-s survey images (limiting mag about 20.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Feb. 22.5954 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h41m50.59s +41d25'49".9 (equinox 2000.0). Which is about 605.8" west and 581.4" north of the center of the NGC224(M31).
. Nothing is visible at this position on archival images taken on Feb 14.58587 (limiting mag 21.5).

NET UCAC-4
XM01MZ C2018 02 22.59539 00 41 50.59 +41 25 49.9 17.9 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM01MZ/XM01MZ.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 Feb.22.59539 UT,2018

DSS IMAGE

Archival images