Domicile

Meaning

A planet is in its domicile when it stands in a sign it rules. Mars in Aries, Venus in Taurus, the Moon in Cancer: each is at home. Tradition reads a planet at home as free to act in its own way, like a host with everything close to hand.

The scheme is old and tidy. The Sun rules Leo and the Moon rules Cancer. Each of the five other visible planets rules two signs, one on each side of that pair. Mercury takes Gemini and Virgo, Venus Taurus and Libra, Mars Aries and Scorpio, Jupiter Sagittarius and Pisces, and Saturn Capricorn and Aquarius.

Domicile is the first and strongest of the five essential dignities, ahead of exaltation, triplicity, term and face. Its mirror is detriment, the sign opposite a domicile, where the same planet is read as far from home.

Being at home is not the same as being comfortable. Saturn in Capricorn is wholly Saturn: serious, patient, exacting. Domicile says that a planet is clear and consistent in its own nature, whatever that nature is. It does not promise that its themes will feel easy.

In practice

• Every planet answers to the ruler of its sign. A planet in Gemini depends on Mercury, its dispositor. How Mercury fares colours how that planet can act.
• The ruler of the rising sign is the chart ruler, read as a guide for the whole chart. Mars rules a chart with Aries or Scorpio rising.
• Each house has a ruler too: the planet that rules the sign on its cusp, read as the steward of that house’s matters.
• Two planets in each other’s domicile, such as the Sun in Aries and Mars in Leo, are in mutual reception, read as helping each other.
• Modern rulers. Many astrologers give Aquarius to Uranus, Pisces to Neptune and Scorpio to Pluto. Traditional astrologers keep the seven old rulers, and the outer planets then have no domicile.

Across traditions

• Indian astrology uses the same seven rulers of the signs, and speaks of a planet in its own sign as svakshetra, “own field”.
• It ranks the dignities differently. Exaltation comes first, then mūlatrikoṇa, a favoured span in one of the planet’s signs, and only then the own sign. Western tradition puts domicile first.

Origin and history

Greek astrologers called a planet’s sign its oikos, its house, and the Latin domicilium gave the word domicile. Ptolemy explains the pattern in the Tetrabiblos by warmth and distance. Cancer and Leo come closest to the top of the northern sky and bring the most heat, so they go to the two lights.

Saturn, the coldest and farthest planet, takes the two signs opposite them. Jupiter takes the next pair, in trine to the lights, Mars the signs in square, and Venus those in sextile. Mercury, never far from the Sun, takes the signs beside them.

Firmicus Maternus tells the same scheme as a story, the thema mundi, the chart of the world’s birth. Cancer rises, and each planet stands in one of its own signs, from the Moon in Cancer to Saturn in Capricorn. William Lilly, in Christian Astrology (1647), counts domicile as the greatest essential dignity, worth five points. After Uranus, Neptune and Pluto were discovered, astrologers gradually gave each of them a sign of its own.

How Ulune calculates it

Ulune’s dignities follow the traditional rulers, for the seven planets from the Sun to Saturn. A planet in a sign it rules is in its domicile and earns five of Lilly’s points, added to any other dignity it holds there. The Dignities table names, for each of the seven, the domicile ruler of the degree it stands on. The wheel’s dignity overlay marks a planet at home with a D.

Uranus, Neptune and Pluto have no dignity score. The modern rulers appear only for the chart ruler. When the rising sign has a modern ruler of its own, Ulune names both. Dispositors and mutual receptions use the traditional rulers only. Without a birth time, a dignity that could change during the day is marked ~.

Correspondences