Chiron Astrology

– Research and writings about Chiron, by Martin Lass. Book excerpts, library and biography.

Magi Society

– Advocates the use of planetary geometry, declinations and chiron. Articles, lessons, software and FAQ.

Mark Andrew Holmes’ Astrology Pages

– Extensive personal research into asteroids, comets and other objects.

The Astrology of The Centaurs

– Wide selection of essays and astronomical data on the astrological centaurs, much of which is available also in Spanish. Home also of the freeware calculation program Riyal.

The Centaur Research Project

– Ephemerides, mythological information, research material and news.

Treehouse Mountain

– Asteroid ephemerides, keywords and lessons, with book list and archives.