POV-Ray : Newsgroups : povray.advanced-users : Calculating planet positions : Re: Calculating planet positions Server Time
20 Apr 2024 07:31:50 EDT (-0400)
  Re: Calculating planet positions  
From: Mike Horvath
Date: 15 Sep 2018 15:06:51
Message: <5b9d584b$1@news.povray.org>
On 9/15/2018 2:11 PM, Bald Eagle wrote:
> Mike Horvath <mik### [at] gmailcom> wrote:
>> I'm trying to adapt the following PDF to POV-Ray code for my
>> planetarium/orrery.
>>
>> https://ssd.jpl.nasa.gov/txt/aprx_pos_planets.pdf
> 
> It was a gigantic PITA
>
http://news.povray.org/povray.binaries.animations/thread/%3Cweb.5915a4387de46d5ec437ac910%40news.povray.org%3E/?mtop=41
> 6271
> 
> Even more of a PITA was unpacking date codes.
> 
> 

Interesting. It seems I posted in that thread too.


>> How do I calculate the modulus -180 <= M <= +180?
> 
> I don't know what that means
> 
> 
> 

Quote:

"Modulos the mean anomaly so that -180 <= M <= +180 ..."



Mike


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