Hanjie Tan (AUUK), Mi Zhang, Guoyou Sun, Jiangao Ruan, Jingyuan Zhao (Xingming Obs), Quanzhi Ye , Xing Gao (Xingming Obs), report an UV candidate (G=16.20+-0.05, 02.82803 UT; G=17.73+-0.08, 02.84508 UT). The source appears to correspond to object Gaia EDR3 68257132096874112 (G=18.99) in the Gaia EDR3. Discovery was made on several 120-s survey images (limiting mag about 18.5) taken by Xing Gao at Xingming Observatory #3 (N88) around Dec. 02.82803, 2021 UT using a unfiltered CCD (0.3-m f/3.6 reflector). Images can be found at: http://xjltp.china-vo.org/xm85ht.html
Follow-up observations were performed by Xing Gao at Xingming Observatory #3 (N88) around Dec. 03.68, 2021 UT using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). Several 120-s survey images (limiting mag about 20.5) showed that the candidate has decreased to 19.14+-0.08G, 03.68498 UT; 19.09+-0.08G, 03.68661 UT. The candidate likely to be an UV star.
NET Gaia DR2
XM85HT C2021 12 02.82803 03 39 21.82 +24 33 31.8 16.20+-0.05G N88
XM85HT C2021 12 02.84508 03 39 21.81 +24 33 31.6 17.73+-0.08G N88
XM85HT C2021 12 03.68498 03 39 21.85 +24 33 32.4 19.14+-0.08G N88
XM85HT C2021 12 03.68661 03 39 21.85 +24 33 32.5 19.09+-0.08G N88
