I am looking for software to input planetary bodies and use it to determine distances between each body at certain times. Software doesn't need to be 3D but needs to be graphic.

I know there are software packages like Universe Sandbox but I would greatly prefer something that is free and relatively easy to learn as I am a student. I have most of the required information for planetary bodies, orbital distance, eccentricity, mass and so on.

Running on Windows 10. As for price, at most I'd say less than $30 USD since that is the cost of Universe Sandbox.

  • Celestia? That is free. – peterh - Reinstate Monica May 27 at 7:34
  • I think I tried Celestia, but the fact that it needed to be coded for anything new deterred me from getting into it. Perhaps I'll have to give that one a try again and learn how to add in the bodies. – Markitect May 27 at 19:40
  • Also I've played a little bit with Celestia source already, and well... it is not really tuned for easy extendibility, that was my experience. But you don't need to extend, it is enough if you can somehow inject your own db into it. I am not sure, if Celestia can even simulate gravitational n-body systems, too. – peterh - Reinstate Monica May 27 at 21:43
  • The planetary system is in the link I previously showed (accidentally hit post before I was done). Therefore I don't think a gravity engine is as relevant. That being said, it's always a plus – Markitect May 27 at 23:57

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