Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory), report ~0.9 mag outburst in a known variable star ( 17.74 r ) which is 18.59 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. 27.69644, 2021 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm43ht.html
XM43HT C2021 01 27.69644 04 34 00.44 +71 24 24.1 17.74 r N88
*Known VS MGAB-V450
