Re: Simple orbit formula?


"TDOR" <tjaldor@xxxxxxxxxxx> wrote in message
news:1239835d.0505281403.48dc57f4@xxxxxxxxxxxxxxxxxxxxx
> Im looking for a simple formula to predict the position of a
> planet in the solar system i 3 dimensions with the sun as
> center given the time.
> Aproximation is ok although it should preferably use
> elipses and take acceleration into account.
>
> I have read a few texts online about keplers laws, but they
> only deal with two dimensions and use polar coordinates
> which is not my favorite :)
>
> Can som1 help me with a pointer to a text online or other?

If you only have two bodies - the planet and the sun - then you only need
two dimensions. Assume the sun is stationary. The sun and the planet's
movement will always lie in a plane. This why Kepler's Laws are two
dimensional ...



.

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