Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory), report ~5.7 mag outburst in a known variable star ( 16.20 r ) which is 21.94 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. 28.64568, 2021 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm44ht.html
XM44HT C2021 01 28.64568 03 09 17.35 +31 40 39.9 16.20 r N88
XM44HT C2021 01 28.66262 03 09 17.33 +31 40 40.4 16.11 r N88
*Known VS CSS 121120:030917+314041
