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THE OUTBURST IN A KNOWN VARIABLE STAR – XM20HT

Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory), report ~3.3 mag outburst in a known variable star ( 15.75 r ) which is 19.02 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. 22.54499 UT using a unfiltered CCD ( 0.3-m f/3.6 reflector ). Images can be found at: http://xjltp.china-vo.org/xm20ht.html

XM20HT C2020 12 22.54499 21 51 53.49 +50 45 36.9 15.75 r N88

*Known VS MGAB-V231

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