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List:       kstars-devel
Subject:    Re: [Kstars-devel] Another ephemerides update
From:       Jason Harris <jharris () 30doradus ! org>
Date:       2007-01-15 16:57:26
Message-ID: 200701150957.26512.jharris () 30doradus ! org
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Hi,

The 9 planets don't need to be updated.  Their orbital models are much more 
sophisticated than the models used for comets and asteroids, and their 
positions are accurate over a much longer timescale.  See README.planetmath 
for details.

The other reason comets and asteroids need to be updated is to include 
newly-discovered objects (like comet McNaught (2006 P1)).  This is obviously 
not a frequent issue for the major planets (recent changes made to Pluto's 
status notwithstanding).

Jason

On Monday 15 January 2007 09:47, Shriramana Sharma wrote:
> > If you've downloaded the 2007.01 update of the ephemerides,
>
> Jason, is there (ever) any update to the nine (eight) planets section
> of the ephemerides? What is the content of these ephemerides updates?
>
> Thanks, and sorry for my ignorance.
>
> Shriramana Sharma.
> _______________________________________________
> Kstars-devel mailing list
> Kstars-devel@kde.org
> https://mail.kde.org/mailman/listinfo/kstars-devel

-- 
Jason Harris
jharris@30doradus.org
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