https://github.com/gheja/vsop87.js

JavaScript library to calculate the position of the planets in the solar system using heliocentric ecliptic rectangular coordinates based on the VSOP87 C series.
https://github.com/gheja/vsop87.js

Last synced: about 1 month ago
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JavaScript library to calculate the position of the planets in the solar system using heliocentric ecliptic rectangular coordinates based on the VSOP87 C series.

• Host: GitHub
• URL: https://github.com/gheja/vsop87.js
• Owner: gheja
• Created: 2015-07-03T21:03:22.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-03-09T22:12:09.000Z (over 6 years ago)
• Last Synced: 2024-04-16T08:48:55.803Z (7 months ago)
• Language: Fortran
• Homepage:
• Size: 7.94 MB
• Stars: 8
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
vsop87.js

=========

This is a library to use the VSOP87 theorem to calculate positions of

planets in the Solar System relative to the Sun.

The library depends on the VSOP87 C series (Heliocentric ecliptic

rectangular coordinates for the equinox of the day).

This library is optimized for readability and simplicity, not speed

or size, as I was unable to find a simple JavaScript example for the

handling of VSOP87 series and wanted to share it.

Sources

-------

Theorem: https://en.wikipedia.org/wiki/VSOP_%28planets%29

Datafiles: ftp://cdsarc.u-strasbg.fr/pub/cats/VI%2F81/

Calculations: http://www.caglow.com/info/compute/vsop87