# Calculate Low/High/Geo orbits for other planets? - math lite - gamedev

I have a situation where I have proceduraly generated planets and moons in a solar system. These bodies have varying mass and radius.

Now what I want to do is be able to define a circular orbital path around each (Planet and Moons) that would be conceptually equivalent to Low Earth Orbit, High Earth Orbit, and Geosynchronous Earth Orbit.

I don't want to get into high math calculating things exactly, and like I stated previously these orbits are circular not elliptical anyway. What I do need is really just a way to fake it so it seems somewhat logical and semi-believable.

Does anyone have any idea on how I might best go about this? I would guess that the main, or maybe only necessary, variable in the equation would be the mass of the planet or moon?

Also as a side but semi-related question would there be something similar I should take into account when placing moons around a planet to keep it semi logical?

Thanks for any help!

• For a bit more clarity, this is a 2D game and I will be drawing a circle around the planets to represent the orbits. All I really need to do is just calculate the altitude of the three orbit types. Nov 14, 2015 at 22:29