← Encyclopedia of Astrology · lesson 91/235
Chart ruler
What it is
The chart ruler is the planet that rules the sign rising on the Ascendant. With Libra rising, the chart ruler is Venus; with Capricorn rising, Saturn; with Gemini or Virgo rising, Mercury. Older astrologers called it the lord of the Ascendant, and in horary astrology it stands for the person asking the question — William Lilly's first significator.
Which ruler
This chart uses the traditional rulerships, the ones each sign held before the outer planets were discovered:
- Aries and Scorpio — Mars
- Taurus and Libra — Venus
- Gemini and Virgo — Mercury
- Cancer — the Moon; Leo — the Sun
- Sagittarius and Pisces — Jupiter
- Capricorn and Aquarius — Saturn
Many modern astrologers also give Scorpio to Pluto, Aquarius to Uranus and Pisces to Neptune, and read those planets as co-rulers. The traditional ruler is used here because its sign dignity is part of how the ruler's condition is judged.
How it is read
Because the Ascendant describes the self and the body — how a person meets the world — the planet that rules it becomes a thread through the whole chart. Astrologers look at:
- its sign — the style in which the person tends to act;
- its house — where much of their attention and energy tends to go; a chart ruler in the tenth house turns the self towards vocation and public life, in the seventh towards partnership;
- its condition — whether it is in its own sign or exaltation, in detriment or fall, angular or cadent, retrograde, close to the Sun;
- its aspects — which other planets colour it.
Nicholas deVore notes the older refinement that when the Ascendant's lord is weak, a stronger and more elevated planet may be taken as the lord of the nativity instead. In elections, too, a well-placed Ascendant ruler is one of the things a chosen moment looks for.
Transits and directions to the chart ruler are often read as touching the person as a whole, rather than one area of life.