Re: [nbos] [AS] I know what I want an orbit to look like...
NBOS Support
Tue Feb 3rd, 2009

For calculating the correct eccentricity to use... good question. Try the
formulas here:
You'll need to fill in the periapsis and apoapsis (ie, .1 and 3). I came
up with approx 0.935

You'll probably have to play with the numbers, but keep in mind the orbital
period is defined by the orbital distance - you wont be able to get both a
3 AU apoapsis *and* and a specific orbital period.


At 09:32 PM 1/31/2009, you wrote:
> how do I get there? :)
>Example: If I want a planet's perihelion to be 0.01 AU every 200 days and
>aphelion 3 AU, how can I play with the planet data to get this? I've only
>ever used AS2 for galactic maps, never touched the planetary bits until now.
>For what it's worth, I'm looking at modeling a system for sci-fi fiction
>purposes. Neutron star with stellar companion in a decently wide orbit,
>planet weaving in and out of them often enough that every X centuries the
>exotic life which lives there goes into hibernation to survive.
>So yeah, eccentric orbits FTW. Help! :D
>Thanks all!
>Nbossoftware mailing list

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