Mi Zhang, Xing Gao (Xingming Observatory), report the discovery of a possible nova (mag approximately 17.4) on several 300-s survey image (limiting mag about 19.5) taken by Xing Gao at Xingming Observatory #2 (N89) around June. 06.83677 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h43m05.87s +41d15’48”.0 (equinox 2000.0). Which is about 243.0″ east and 20.5″ south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on May. 28.89162 (limiting mag 18.5) . Images can be found at: http://xjltp.china-vo.org/xm54mz.html
NET UCAC-4
XM54MZ C2021 06 06.83677 00 43 05.87 +41 15 48.0 17.4 CV N89
 |
 |
 |
| Discovery image taken by N89 on June. 06.83677 UTC,2021 | Archival image taken by N89 on May. 28.89162 UTC,2021 | PS Image |