Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory), report ~1.7 mag outburst in a known variable star ( 16.89 r ) which is 18.55 rmag in Pan-STARRS DR1 catalogue. The transient was discovered on several 120-s survey images ( limiting mag about 18.5 ) taken by Xing Gao at Xingming Observatory #3 ( N88 ) around Jan. 18.68172, 2021 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm40ht.html
XM40HT C2021 01 18.68172 02 42 51.27 +56 41 30.0 16.89 r N88
XM40HT C2021 01 18.69877 02 42 51.19 +56 41 30.3 16.36 r N88
*Known VS PT Per
