Re: [amsat-bb] Sun Kepelerians..

[Cliff Buttschardt <cbuttsch@xxxxxxxxxx>]

Oh come on!  let's get realQ
!

"Vince Fiscus, KB7ADL" wrote:
> 
> Are you the ghost of Claudius Ptolemy? HI
> I've studied this and the mechanics of orbiting bodies.  I'm not an expert,
> but I don't believe you can come up with an element set that will track the
> sun using the algorithms found in our typical amateur radio satellite
> tracking programs.  You might be able to come up with element sets for
> around the spring and fall equinox's that might work for a week or
> two.  You might also be able to generate keps for the sun that might work
> for a few hours tops, and then you'd have to generate a new set in order to
> keep tracking, and these  generated element sets would be generated
> specific to your location on earth.  That's far more work that it's worth.
> Best just buy a copy of InstantTrack and be done with it. Set me straight
> Ptolemy.
> 
> At 06:10 PM 1/10/03 -0400, "Paul Willmott" <pwillmott@northrock.bm> wrote:
> >Bryant,
> >
> >... sorry but for Sun tracking purposes the Sun does orbit the Earth, ....
> >you can very accurately calculate the Sun's elev/azim based on an Earth
> >centric universe.
> >
> >Cheers
> >Paul
> 
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