Is it possible to get the ecliptic coordinates of orbits of planets for a specific date and time? Does the ephemeris data of planets help in constructing that? Any help on this would be helpful. I would like to get the planetary orbit data that I can plot in a map.

  • 2
    $\begingroup$ Converting from RA & declination to ecliptic latitude and longitude is simple spherical trigonometry. See en.wikipedia.org/wiki/Celestial_coordinate_system for the relevant formulae. $\endgroup$
    – PM 2Ring
    Commented Nov 25, 2019 at 21:17
  • 1
    $\begingroup$ Answers to Where can I find/visualize planets/stars/moons/etc positions? may be helpful. The two I find most helpful are the Python package Skyfield andJPL's [Horizons website.. $\endgroup$
    – uhoh
    Commented Nov 25, 2019 at 23:35
  • $\begingroup$ If you are interested at all in using or learning Python then Skyfield works simply and nicely and can convert to ecliptic coordinates. If you'd like to try Horozons here's a tutorial and here's how to convert to ecliptic coordinates. Are either of these methods something that you'd like to try? $\endgroup$
    – uhoh
    Commented Nov 25, 2019 at 23:42
  • 1
    $\begingroup$ @uhoh i know a bit of python, but will i be able to construct the orbit from the ephemeris data? $\endgroup$
    – Rasika
    Commented Nov 26, 2019 at 1:37
  • 1
    $\begingroup$ @uhoh actually i want to plot the orbit of planets on the earth for a given time and date, for that i need latitude and longitude correct? if we see a position of planet what we get is a single point , from that i cannot construct the orbit of it. please apologise if my question is wrong $\endgroup$
    – Rasika
    Commented Nov 26, 2019 at 4:32


You must log in to answer this question.

Browse other questions tagged .