gvdeynde <gvd### [at] gmailcom> wrote:Do you know of a site or
> reference work where I could get approximate data (good enough for this
> purpose of an educational animation) for the astronomy data?

It's good for a lot more than rough approximations, but to the best of my
knowledge, ephemeris data is the definitive source:

http://eclipse.gsfc.nasa.gov/TYPE/TYPE.html

You might try searching for interactive simulations too.  I know I've seen
models you can fly around in before, but I can't remember the name.

 - Ricky

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