Hanjie Tan and Xing Gao, report ~2.8 mag outburst in a known variable star ( 15.54 r ) which is 18.35 rmag in Pan-STARRS DR1 catalogue. The transient was discovered on several 120-s survey images ( limiting mag about 18.0 ) taken by Xing Gao at Xingming Observatory #3 ( N88 ) around Sep. 02.70728 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm16ht.html
XM16HT C2020 12 02.70728 23 36 26.59 +64 24 19.8 15.54 r N88
*Known VS ZTF J233626.51+642421.1
