Re: SatSpy 2.5

Earl Needham (kd5xb@amsat.org)
Thu, 06 Nov 1997 07:16:54 -0700

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In reply to: Bjoern Gimle: "Re: SatSpy 2.5"

At 06:49 AM 11/6/97 +0100, Bjoern Gimle wrote:
>I agree on that - SGP4 should be OK in most programs with relatively
>fresh elsets - corrected SDP4 needed only for old elsets of dead
>geostationaries (or eccentric orbit satellites)

	OK, now I'm starting to get somewhere!  ;-)

	I've been wondering about the differences in SGP4 and SDP4.  At least now
I have a clue.  Would someone "in the know" please cllue me in?

	Earl


Earl Needham, KD5XB
Clovis, NM
Conquistador Council, BSA
mailto:KD5XB@AMSAT.ORG
Phi Mu Alpha Sinfonia, Pi Chi '76  (That was Texas A&I University.)
(BTW - spent a year at SLU, too!)

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