Appendix I. Decan Systems Definiti<strong>on</strong>s <str<strong>on</strong>g>Working</str<strong>on</strong>g> <str<strong>on</strong>g>Paper</str<strong>on</strong>g> <strong>on</strong> <strong>Astrological</strong> <strong>Physiognomy</strong>: <strong>History</strong> <strong>and</strong> <strong>Sources</strong> Decan (or Decanate). A 10 degree sign subdivisi<strong>on</strong>. Each sign is comprised of three decans. Chaldean Decans. Each decan is assigned a ruling planet in Chaldean order: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Mo<strong>on</strong>. As the ruler of Aries, Mars is assigned to the first decan of Aries; the Sun, sec<strong>on</strong>d decan of Aries; Venus, the third decan of Aries, etc., This is the most comm<strong>on</strong> system of decans used in the Greco-Roman <strong>and</strong> Medieval period. Order of Signs. Manilius associates each decan with signs, not planets. He begins by assigning the first decan of Aries to Aries; the sec<strong>on</strong>d decan of Aries to Taurus, the third decan of Aries to Gemini, etc., <strong>and</strong> c<strong>on</strong>tinues in the order of signs. His decan system appears idiosyncratic <strong>and</strong> no other astrologer appears to have used it. Hindu Decans (Varahamihira). This method associates the three signs of each triplicity to a single sign. To Aries is assigned the fiery triplicity: Aries, Leo, Sagittarius. To Taurus is assigned the earthy triplicity: Taurus, Virgo, Capricorn. To Gemini is assigned the airy triplicity: Gemini, Libra, Aquarius. To Cancer is assigned the watery triplicity: Cancer, Scorpio, Pisces. As the triplicity series repeats the order of the three decan assignments respects the sign. Example: The next sign is Leo, a fire sign. Instead of ordering the three fiery signs Aries, Leo, Sagittarius (as for the sign of Aries), Leo is placed first followed by Sagittarius, <strong>and</strong> Aries. www.regulus-astrology.com 58
Decan System of Manilius Sign 1 st 2 nd 3 rd P P Q R Q S T U R V W X S Y Z [ T P Q R U S T U V V W X W Y Z [ X P Q R Y S T U Z V W X [ Y Z [ <str<strong>on</strong>g>Working</str<strong>on</strong>g> <str<strong>on</strong>g>Paper</str<strong>on</strong>g> <strong>on</strong> <strong>Astrological</strong> <strong>Physiognomy</strong>: <strong>History</strong> <strong>and</strong> <strong>Sources</strong> ©Regulus Astrology LLC, 2010. All Rights Reserved. 59