Re: NORAD model for geostationary satellites

Bjoern Gimle (
Wed, 29 Oct 1997 07:48:24 +0100

>somewhere else that the SDP4 algorithm had been corrected but [again] I
>don't know where this was stated or if the updated model was described
I believe Rob Matson, after his corrections to the SDP4 in SkyMap, tested
a geosynch elset several months old, and found excellent accuracy (improvement)

And that Ron Lee observed some high-eccentricity objects with the same
good results. 

I hope they will reply, when they are not overloaded with work, otherwise
it should be possible to find their postings in the archives.

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