Lian Du, Jianlin Xu, Jingyuan Zhao, Mi Zhang, Xing Gao (Xingming Observatory), report the discovery of a variable star candidate (16.98 G). The source appears to correspond to object Gaia DR2 451690101228215680 (G=17.66) in the Gaia DR2. Discovery was made on one 30-s survey image (limiting mag about 19.0) taken by Xing Gao around 2021 Sep. 25.94341 UT at Xingming Observatory #2 (N89) using a unfiltered CCD (0.5-m f/4 reflector). Images can be found at: http://xjltp.china-vo.org/psp21n.html
NET Gaia DR2
PSP21N C2021 09 05.82178 02 30 19.96 +51 23 33.2 18.07G N89
PSP21N C2021 09 13.84242 02 30 19.97 +51 23 33.4 18.27G N89
PSP21N C2021 09 18.79188 02 30 19.97 +51 23 33.7 17.91G N89
PSP21N C2021 09 25.94341 02 30 19.98 +51 23 33.8 16.98G N89
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| Discovery image taken by N89 on Sep. 25.94341 UTC,2021 | Archival image taken by N89 on Sep. 05.82178 UTC,2021 | PS Image |