"2020 XR" . "6.0246054488304E11" . . . . . "2020-12-04" . . . . . . "2020 XR" . . . . . . . "1.45129382302191E11" . "1.2465252E8" . . . "19.8" . "2020-May-31 (JD 2459000.5)" .