The Rulers were divided into two groups, the Moon and Sun which move around the zodiac in one direction; and the planets Mercury through Saturn, which display both direct and retrograde motion. The unidirectional were given one sign each, the bidirectional two signs each. The signs are numbered 1 through 12. When Urania (as I prefer to call it) was discovered to be a planet instead of a faint star, the higher numbered sign was taken from the outermost planet that still ruled 2, so sign number 11 came under Uranian rulership. When Neptune was discovered, the higher numbered sign was taken from Jupiter. Finally, the higher numbered sign was taken from Mars and given to Pluto. Both the naming of the planets beyond Saturn and this reaSignment pattern appear to have been intuitive, inspired, I believe, by the Muse of Astrology and ruler of Aquarius, Urania. The original Rulership pattern was very likely based on a combination of a Heliocentric cypher involving Elements and Modes (The Sun, fixed in place Heliocentrically ruling the Fixed-Fire sign, and the four Cardinal sign rulers which also have Heliocentric patterns) and a numbering pattern beginning at the Moon ruling the sign of Summer Solstice, reaching Saturn at number 10 (Winter Solstice) and turning back. The numbering pattern ends in modern astrology but the Heliocentric cypher remains in place. And, the two inner planets, which appear as both morning and evening stars, still rule two signs.