[comp.sources.wanted] Source code for orbital calcs?

king@cod.UUCP (04/06/87)

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Help! I don't want to start from scratch!

Does anyone know where I can get programs < source code >
that calculate moon and planet orbits. 
Desired accuracy is better than, say, 
one arc-minute for all planets throughout 1900 - 2100 A.D.
Of course, it would be *real* nice if the code contained
3-body and other corrections which would greatly extend this 
accuracy.

Any help would be appreciated. Thanx.

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Bill King
king@nosc.mil