Hanjie Tan and Xing Gao, report ~5.3 mag outburst in a known variable star ( 13.72 r ) which is 19.04 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. 01.70626 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm19ht.html
XM19HT C2020 12 01.70626 20 56 11.02 +51 06 03.2 13.72 r N88
*Known VS Dauban V162
