Yingna Su^1,2, Jialin Chen¹, Qingmin Zhang¹, Haisheng Ji^1,2 and Yanjie Liu^1,2, (1)Key Laboratory for Dark Matter and Space Science, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China, (2)School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui, China