- Planets orbital elements were taken from Nasa's Jet Propulsion Laboratory.
- I learned about calculating positions from orbital elements by reading these documents by Keith Burnett, Paul Schlyter and E M Standish (JPL).
- Planet texture maps are a courtesy of James Hastings-Trew.
- Stars coordinates from AstroNexus and Nasa.
- David Eagle for orbital calculations of the moon, based on "Lunar Tables and Programs From 4000 B.C. TO A.D. 8000" by Michelle Chapront-Touze and Jean Chapront. See mathworks.com.
- Bob Braeunig for calculations of Apollo missions free return trajectories.
- Quadratic integrations from http://orbit.medphys.ucl.ac.uk/'s documentaion by Martin Schweiger.
- Some techniques are inspired by Michael Chang's tutorial of 100,000 stars
- And of course, many thanks to Mr Doob for the excellent three.js
More details on La Grange's blog at http://lab.la-grange.ca/en/jsorrery