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 (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2018-03-09T22:12:09.000Z (about 7 years ago)
- Last Synced: 2025-03-14T21:03:06.194Z (about 1 month ago)
- Language: Fortran
- Homepage:
- Size: 7.94 MB
- Stars: 8
- Watchers: 1
- Forks: 3
- Open Issues: 0
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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