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张宓 XM52MZ = PNV J00423449+4117298 = AT 2020abqz ? M31河外新星再增亮

Mi Zhang, Xing Gao (Xingming Observatory), report the discovery of a possible nova (mag approximately 18.3) on several 300-s survey images (limiting mag about 20.0) taken by Xing Gao at Xingming Observatory #3 (N88) around Mar. 01.55789, 2021 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m34.49s +41d17’29”.8 (equinox 2000.0). Which is about 110.8″ west and 81.3″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Feb. 17.55119, 2021 (limiting mag 20.0). Suspected the optical re-brightening of AT 2020abqz. Images can be found at: http://xjltp.china-vo.org/xm52mz.html

NET UCAC-4
XM52MZ C2021 03 01.55789 00 42 34.49 +41 17 29.8 18.3 CV N88
XM52MZ C2021 03 01.56701 00 42 34.48 +41 17 29.9 18.3 CV N88

Discovery image taken by N88 on Mar. 01.55789 UTC,2021 Archival image taken by N88 on Feb. 17.55119 UTC,2021 PS Image

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