Hello!! It's Joseph

 Chang'e 5 is not on JPL Horizons database. this is just experimental !!!   by using data from space-track.org and with help of JPL Horizons,  Norad id: 47097 intl code: 2020-87a USER DATA {Unspecified by user} Wed Nov-25 02:56:38 Local ID: -847097 (TLE ID = 47097) Geocentric SGP4/SDP4 Two-Line Elements (TLEs): 1 47097U 20087A 20329.06000000 -.00021863 00000-0 00000+0 0 9996 2 47097 21.2990 2.3420 9675959 227.8890 6.2610 0.09489912 28     ******************************************************************************* Ephemeris / WWW_USER Wed Nov 25 02:56:38 2020 Pasadena, USA / Horizons ******************************************************************************* Target body name: {Unspecified by user} (-847097) {source: USER-INPUT TLE} Center body name: Earth (399) {source: DE431mx} Center-site name: GEOCENTRIC *************************************************************...

  ******************************************************************************* Ephemeris / WWW_USER Thu Nov 12 21:03:10 2020 Pasadena, USA / Horizons ******************************************************************************* Target body name: Hayabusa 2 (spacecraft) (-37) {source: hayabusa-2_merged} Center body name: Earth (399) {source: hayabusa-2_merged} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2020-Nov-10 00:00:00.0000 UT Stop time : A.D. 2020-Dec-06 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : No model available Target radii : (unavailable) Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy...

    now in 4th edition on amazon   implemented on github by jfcarr in python, C, C++, Rust and other languages some history introduction on poliastro Steve Moshier's superb astronomical-almanac on Ubuntu , debian , his website , in javascript , gui   Jean Meeus: pls refer here pmonstrasio Sean E Urban's book: astronomical almanac  JPL Horizons provides interpolated results from spice kernels. The spice kernels contain blocks of interpolation coefficients using (usually if not always) Chebychev polynomials that allow spice users, other third party programs, and the Horizons website to calculate positions in-between the points where the coefficients are provided in the kernels. Elwood Downey of clearskyinstitute : XEphem github in python: From Brandon Rhodes: PyEphem, ( now depreciated ), based on XEphem starting 2007, and github repo, can be found in debian package study-pyephem and now replaced by Skyfield   - SFAlmanac-Py3 For satellite: Briswe...