Conjunction in Astrology

In astrology, a conjunction is an angle of 0° between two planets: they stand at nearly the same degree of the zodiac, and astrologers say they are conjunct. That usually places both in one sign, so they share its element and modality. The tradition reads a conjunction as blending the two planets' themes into a combined focus.

Conjunction at a glance

• Angle: 0°
• Signs apart: none; usually both planets are in the same sign
• Element and modality link: the same element, modality and ruling planet when both sit in one sign
• Traditional label: a major aspect that counts as easy or hard depending on the planets involved
• Orb: about 10° in one reference set, with 8° used by some astrologers when neither the Sun nor the Moon is involved; orbs vary

Each sign covers 30° of the zodiac. Two planets 0° apart therefore stand in the same stretch, and whatever the sign table says about that sign applies to both of them at once. Two planets conjunct in Aries share cardinal Fire and the rulership of Mars. In Virgo they share mutable Earth and Mercury; in Aquarius, fixed Air and Uranus, or Saturn in the traditional scheme.

The word "usually" matters, because a conjunction is measured in degrees, not in signs, and it allows an orb. In an example chart where Jupiter stands at 28° Gemini and Saturn at 3° Cancer, the two are 5° apart, so the tradition counts them as conjunct, yet Jupiter sits in mutable Air and Saturn in cardinal Water. A conjunction that crosses a sign line like this loses the shared element and modality, and each planet is read in its own sign.

In the tradition, a conjunction blends the themes of two planets into a combined focus. It is also said to be the most powerful of the aspects, because the two planets intensify each other's effects. The closer the two planets are to an exact 0°, the stronger the aspect is said to be.

The contrast with the opposition helps here. An opposition is described as relational but not unifying or blending, while a conjunction fuses two themes into one. That fusion has a further effect in the tradition: if either planet in a conjunction is also under a hard aspect from a third planet, the conjunction adds to that tension.

Whether a conjunction counts as easy or hard depends on which planets are involved, so the label comes from the pair, not from the angle. "Blending" and "intensifying" are names for a kind of contact, not outcomes, and they describe themes, not diagnoses. Astrology is an interpretive tradition, not a scientifically validated method, so read any conjunction in your own chart as material for reflection rather than a fact about you.

Take an example chart with the Sun at 18° Leo and the Moon at 21° Leo, 3° apart. Every month, at the New Moon, the Sun and Moon form a conjunction, so this is a birth near a New Moon. Leo is fixed Fire and the Sun rules it. The Sun's position gives what is usually called the sun sign, and astrology links the Moon with emotions, moods, instincts, habits and the need for security. In this chart both sit in the sign the Sun rules, and the tradition reads the inner rhythms of the Moon and the sun sign as one focus rather than two.

In a second example chart, Venus stands at 8° Taurus and Mars at 14° Taurus, a 6° conjunction. Taurus is fixed Earth, and Venus rules it. Astrology associates Venus with harmony, beauty, refinement and the wish for pleasure, comfort and ease, and Mars with energy, courage, ambition and impulsiveness. Blended, the drive to act and the taste for beauty and comfort are read as a single theme.

A third example chart puts the Sun at 14°10′ Virgo and Mercury at 14°20′ Virgo, only 10 minutes of arc apart. Mercury rules Virgo, a mutable Earth sign, and astrology links it with communication, thinking patterns, reasoning and adaptability. A planet this close to the Sun, within about 17′ (0.28°), is called cazimi, an old term meaning "in the heart" of the Sun, and such a conjunction is said to be of great strength. A planet that is only moderately close to the Sun is called combust instead, and the limit for that can depend on the planet.

Astrologers distinguish two phases of the same conjunction. It is applying while the faster planet is still moving toward the exact 0°, and separating once the faster planet has passed that degree and the gap is opening again. A 3° orb can describe either phase.

The conjunction is one of the five major aspects in astrology; that overview also covers how orbs work. The other angles have their own pages: Sextile, Square and Trine. For a one-line definition, see conjunction in the glossary.

FAQ

Is a conjunction good or bad in astrology? The tradition gives no single answer. It depends on the two planets, and even then easy or hard is a label, not a verdict on a chart or a prediction.

Does a conjunction appear in a chart with an unknown birth time? No. Astrolivo lists conjunctions, like the other four major aspects, only for a known birth time. Without one, the chart is calculated for 12:00 noon and marked as such, and the Ascendant, Midheaven, houses, exact degrees and aspects are hidden.

Instead of relying on a single noon position, the calculator checks for any sign changes across your entire local birth date. If the Sun, the Moon, or another planet changes sign during that local day, the result shows each possible sign for that day rather than guessing a single one.

How this page was made

Prepared by the Astrolivo editorial team from the Wikipedia articles "Astrological aspect," "Planets in astrology" and "Astrology and science" and the Astrolivo glossary, and fact-checked against them. Astrological meanings are given as the tradition's readings.