From JPL Horizons : Ephemeris Type : OBSERVER Target Body : Tianwen-1 (spacecraft) [-9901491] Observer Location : Geocentric [500] Time Span : Start= 2020-07-30 , Stop= 2020-08-29 , Step= 1 d Table Settings : defaults Display/Output : default (formatted HTML) *************************************************************************************************************** Date__(UT)__HR:MN R.A._____(ICRF)_____DEC APmag S-brt delta deldot S-O-T /r S-T-O **************************************************************************************************************** $$SOE 2020-Jul-30 00:00 00 55 35.76 +16 42 05.4 19.742 n.a. 0.01436168304484 3.5048283 107.4543 /L 71.7765 2020-Jul-31 00:00 00 55 46.99 +16 42 55.5 19.997 n.a. 0.01638269314870 3.4945853 108.3481 /L 70.7793 2020-Aug-01 00:00 00 55 53.95 +16 43 18.8 20.218 n.a. 0.01839792403931 3.4...