Mi Zhang, Xing Gao (Xingming Observatory), report the discovery of a possible nova (mag approximately 18.0) on several 300-s survey images (limiting mag about 19.0) taken by Xing Gao at Xingming Observatory #3 (N88) around Apr. 16.91905, 2021 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m46.56s +41d14’26”.3 (equinox 2000.0). Which is about 25.3″ east and 102.2″ south of the center of the NGC224 (M31). Nothing is visible at this position on archival images taken on Apr. 15.89840, 2021 (limiting mag 18.5). Images can be found at: http://xjltp.china-vo.org/xm53mz.html
NET UCAC-4
XM53MZ C2021 04 16.91905 00 42 46.56 +41 14 26.3 18.0 CV N88
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| Discovery image taken by N88 on Apr. 16.91905 UTC,2021 | Archival image taken by N88 on Apr. 15.89840 UTC,2021 | PS Image |