The eye of heaven

he Sun is the greatest of the seven luminaries of the tradition and the leader of the diurnal sect. The ancients called it the eye of the world: it is by it that all that exists is seen, and from it come life, heat, and light. In the chart, the Sun signifies what is most elevated and visible — the king, authority, the spirit that animates the body.

Unlike the other wandering bodies, the Sun neither retrogrades nor varies in speed: it marks the year, the basis of every calendar and of the seasons. Its temperament is hot and dry — hot above all, for it is the very source of heat, and moderately dry.


Astronomical data

CharacteristicValue
Average distance from Earth1 AU (150 million km)
Course through the zodiac1 year (365.25 days)
Diameter1,392,700 km (109× Earth)
Surface temperature~5,500°C
TypeStar (G2V yellow dwarf)

Observational curiosity: the Sun is so bright that it cannot be looked at directly. The ancients saw it rise and die every day, and upon that rhythm they founded the very notion of sect: the sky is divided between the bodies that rule while it shines and those that rule while it is absent.


The mythology: Helios and Apollo

The Greeks had two solar figures. Helios was the Sun personified, the Titan who each day drove his golden chariot from east to west. He saw all and witnessed all — for this reason he was invoked in oaths, as the eye that lets nothing escape. Apollo, son of Zeus and Leto and twin brother of Artemis, was the god of light, of music, of medicine, of prophecy, and of reason; in time he was identified with the Sun, especially in Rome, where he was Phoebus Apollo, the Shining One. His oracle at Delphi spoke in his name.

The two faces say the same of solar astrology: the body that illuminates and witnesses all, and the principle of order, of clarity, and of measure. The Sun is the eye that sees and the reason that orders.


Nature and sect

The Sun is a luminary, neither a benefic nor a malefic in the strict sense — but its influence is held to be moderately benefic when well disposed, and harmful chiefly through its scorching proximity. It is the leader of the diurnal sect: the body around which the whole doctrine of the sects is organized. The diurnal planets (Saturn, Jupiter and, conditionally, Mercury) are its companions; it presides over the day.

The Sun favours the planets by sect, but debilitates them by neighbourhood. A planet within about 8°30' of the Sun is combust — burned, weakened, like a candle in the light of noon. Very near the exact degree, however, the opposite occurs: cazimi, "in the heart of the Sun" (within ~16'), which gives the planet exceptional dignity and protection.


Essential dignities

DignitySign(s)
DomicileLeo
ExaltationAries
DetrimentAquarius
FallLibra

The Sun has a single domicile, Leo — the royal sign of summer, where it reigns with full authority, giving vitality, honour, and brilliance. In its exaltation in Aries, it is received with the highest honour: the sign of the spring equinox, where the light of day again overcomes the night, and the Sun manifests its force of rebirth.

In detriment, in Aquarius (nocturnal domicile of Saturn, opposite to Leo), the luminary falls into the coldest and most distant sign: life and honour grow dim. In its fall, in Libra — where day begins to lose to night, and where Saturn is exalted —, the Sun is brought low: its dignity declines, and vitality weakens.


The joy of the Sun

The joy of the Sun is the 9th house — the place of God (Deus), of religion, of wisdom, of long journeys, of true dreams, and of oracles. It is the highest house in view of the Ascendant, close to the Midheaven, and for this reason it befits the royal and illuminating body. The Sun rejoices there because the 9th house is the realm of the high, the sacred, and revealed truth — domains proper to the light that shows all.


Traditional significations

The Sun signifies, above all, the king and authority — what is at the top and gives order to the rest:

  • Themes: life and vitality, honour, glory and dignity, legitimate power, the spirit and the reason that governs.
  • People: the king and the great of the realm, the father, the nobles, magistrates of high standing, those who command.
  • Trades: government, high offices, everything that brings honour and public prominence.
  • Body: the heart (centre of life), the sight and the eyes (especially the right in men), the general vitality.
  • Metal: gold, the noblest of metals, as the Sun is the noblest of the bodies.

How to judge the Sun in the chart

The Sun dignified (in Leo or Aries), well situated and free of affliction, gives honour, vitality, nobility of character, and recognized authority. The Sun debilitated (in detriment or fall), or wounded by malefics, brings vital weakness, loss of position, vanity, and blindness to one's own faults. Remember also that the Sun burns the planets that surround it: in judging it, always note who is combust beneath its light.

The Sun, well disposed, makes men noble of spirit, just, magnanimous, and worthy of command; ill disposed, it makes the proud, the tyrannical, and those who lose the honour they had.

— according to Claudius Ptolemy, Tetrabiblos

CTA: Discover in which sign and house the Sun illuminates your birth and how it is disposed in your chart — generate your natal chart.