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POSSIBLE NOVA IN M31 – XM60MZ

Mi Zhang, Xing Gao (Xingming Obs), report the discovery of a possible nova (mag approximately 18.7) on several 300-s survey image (limiting mag about 20.5) taken by Xing Gao at Xingming Observatory #3 (N88) around Oct. 31.74514 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m54.23s +41d16’50”.5 (equinox 2000.0). Which is about 111.7″ east and 42″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 29.58562 (limiting mag 20.0) . Images can be found at: http://xjltp.china-vo.org/xm60mz.html

NET Gaia DR2
XM60MZ C2021 10 31.74514 00 42 54.23 +41 16 50.5 18.7 G N88
XM60MZ C2021 10 31.74890 00 42 54.25 +41 16 50.6 18.6 G N88
XM60MZ C2021 11 01.83933 00 42 54.24 +41 16 50.6 17.6 G N88
XM60MZ C2021 11 01.84314 00 42 54.25 +41 16 50.5 17.5 G N88
XM60MZ C2021 11 02.56183 00 42 54.22 +41 16 50.6 17.1 G N88
XM60MZ C2021 11 02.56558 00 42 54.22 +41 16 50.6 17.1 G N88

Discovery image taken by N88 around 2021 Oct. 31.74514 UT Archival image taken by N88 around 2021 Oct. 29.58562 UT PS image

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