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THE DISCOVERY OF A MICRO-LENSING CANDIDATE – XM95HT

Hanjie Tan (AUUK), Mi Zhang, Guoyou Sun, Jiangao Ruan, Jingyuan Zhao (Xingming Obs), Quanzhi Ye (UMd), Xing Gao (Xingming Obs), report the discovery of a micro-lensing candidate at 16.83 Gmag on several 60-s survey images (limit mag about 18.5) taken by Xing Gao at Xingming Observatory “#”3 (N88) around 2022 Jan.10.76080 UTC using unfiltered CCD and PAT telescope (0.3-m f/3.6 reflector). The transient is approximately located at RA= 06h03m44.17s,DEC = +21d21m48.3s (equinox 2000.0). The source appears to correspond to object Gaia DR2 3423389960580175360 (G=18.59) in the Gaia DR2. Discovery images can be found at: http://xjltp.china-vo.org/xm95ht.html

NET Gaia DR2
XM95HT C2022 01 10.76080 06 03 44.17 +21 21 48.3 16.83+-0.06G N88
XM95HT C2022 01 10.77163 06 03 44.15 +21 21 48.5 16.90+-0.06G N88

Through our observation data and ZTF data, the source is similar to microlensing. It deserves high attention.
ZTF light curve

Fitting ztf data with lens model (pspl) – by Subo Dong