Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory), report ~3.8 mag outburst in a variable star candidate ( 17.49 r ) which is 21.26 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 Dec. 31.75307 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm27ht.html
XM27HT C2020 12 31.75307 03 06 42.47 +48 16 35.8 17.49 r N88