[Kstars-devel] Ephemeris engine?

[Jan Kotek]

Use www.moshier.net ephems. So far best around.

J

On Thu, Jul 1, 2010 at 5:24 PM, Alexey Khudyakov
<alexey.skladnoy at gmail.com> wrote:
> On Wed, Jun 30, 2010 at 10:17 PM, Daniel-Marian Baboiu
> <daniel.baboiu at shaw.ca> wrote:
>> I'm starting to look into eclipse prediction for kstars, although I
>> won't start actual coding in less than 3 weeks. I had a project a few
>> years ago, concerning Moon eclipses, and I had some success - my
>> prediction for contacts and maximum phase were within a few minutes (~3)
>> from published values. For Sun eclipses and star occultations, it is
>> more complicated - simply looking for conjunctions won't do.
>>
>> So, the first step is to understand what is the ephemeris engine behind
>> kstars?
>>
> I don't really know but I suppose that algorithms was taken from book
> "Astronomical Algorithms" by Jean Meeus. It's possible that you are
> most knowledgeable person here  when it comes to ephemerids
>
> Code for ephemerids calculation is located in files:
>  - skyobject/ksplanetbase.*
>  - skyobject/ksplanet.* for big planets
>  - skyobject/ks{sun,moon}* for Sun and Moon
>
> Feel free to ask if have problems.
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