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Re: Sun Kepelerians..



Bryant, ...

:^)

It would take a rather long time to transcribe, ... BUT there is an
excellent text that explains the Sun's motion, plus LOADS of other stuff,
... and for a change its reasonably priced, ....

"Astronomical Algorithms" by Jean Meeus, ...Published by Willmann-Bell ISBN
0-943396-35-2

The text contains sooooo many cool things, ... and you can get the software
versions in many [prog] languages for cheap!

Cheers
Paul
----- Original Message -----
From: "Bryant Winchell" <bryantcw@cox.net>
To: "Paul Willmott" <pwillmott@northrock.bm>
Sent: Friday, January 10, 2003 7:44 PM
Subject: Re: [amsat-bb] Sun Kepelerians..


> Paul-
>
> You know, as soon as I sent that post out I thought I'm probably going to
> learn something- namely I don't know enough to keep my big mouth shut
(:0).
> However, now that I have extracted my foot, so to speak, how does one
> calculate the Sun's track? And, was I wrong in stating that "Keplarian
> Elements" [as developed by Kepler] define only Earth orbiting bodies????
>
> Regards,
>
> Bryant
> Original Message -----
> From: "Paul Willmott" <pwillmott@northrock.bm>
> To: "Bryant Winchell" <bryantcw@cox.net>; "Tony Langdon"
> <tlangdon@atctraining.com.au>; "'Roy Schulz, VE7BPB'" <VE7BPB@rac.ca>;
> "amsat-bb" <amsat-bb@amsat.org>
> Sent: Friday, January 10, 2003 2:10 PM
> Subject: Re: [amsat-bb] Sun Kepelerians..
>
>
> > 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
> >
> > ----- Original Message -----
> > From: "Bryant Winchell" <bryantcw@cox.net>
> > To: "Tony Langdon" <tlangdon@atctraining.com.au>; "'Roy Schulz, VE7BPB'"
> > <VE7BPB@rac.ca>; "amsat-bb" <amsat-bb@amsat.org>
> > Sent: Thursday, January 09, 2003 11:35 PM
> > Subject: Re: [amsat-bb] Sun Kepelerians..
> >
> >
> > > Tony-
> > >
> > > Your question about Keps for the Sun intrigued me. Now, I'm no expert
> but
> > I
> > > believe Keplarian Elements only define orbits for bodies traveling
> around
> > > the earth.  It has been pretty well proven that the Sun doesn't [hi
hi].
> I
> > > checked my Nova software and the "Keps" listed for the Sun are all
zero
> > [out
> > > to 7 or 8 places!] except Mean Motion which shows "1.00000000".
> > >
> > > I know this post doesn't help you except perhaps in a negative way.
Good
> > > luck.
> > >
> > > 73
> > >
> > > Bryant, W2RGG/6
> > > ----- Original Message -----
> > > From: "Tony Langdon" <tlangdon@atctraining.com.au>
> > > To: "'Roy Schulz, VE7BPB'" <VE7BPB@rac.ca>; "amsat-bb"
> > <amsat-bb@AMSAT.Org>
> > > Sent: Thursday, January 09, 2003 6:23 PM
> > > Subject: RE: [amsat-bb] Sun Kepelerians..
> > >
> > >
> > > > > I wonder if someone could point me to, or post a set of
> > > > > Keplerian elements
> > > > > for the Sun, in NASA 2-line format.
> > > > > I want to use Satscape for tracking the Sun, but it does not allow
> Sun
> > > > > tracking by default, and does not seem to recognize the AMSAT
> > > > > format for
> > > > > keps.
> > > > >
> > > > > Thanks for the help..
> > > >
> > > > There's some keps around.  Do a Google search.  I think the docs for
> > > > moonkeps (a program to generate keps for lunar tracking) has a set
of
> > keps
> > > > for the Sun.
> > > >
> > > > ---
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