What Is a Conjunction in Astrology?

A conjunction occurs when two planets are positioned together in the zodiac. It is one of the major planetary aspects used in astrology and is represented by an angle of 0 degrees.

When two planets form a conjunction, their astrological functions become closely connected. Instead of operating separately, the two planets work together as a combined influence.

A conjunction can be easy or difficult. Much depends on which planets are involved.

How Does a Conjunction Work?

An exact conjunction occurs when two planets occupy the same degree of the zodiac.

For example, if Mercury is at 15° Gemini and Venus is also at 15° Gemini, they form an exact conjunction.

In practice, astrologers also allow an orb, which means the planets can be several degrees apart and still be considered conjunct. The closer the planets are, the stronger the conjunction is generally considered to be.

The important point is that the two planets are occupying the same area of the chart.

What Does a Conjunction Mean?

A conjunction combines the meanings of the planets involved.

Mercury represents communication and thinking, while Venus is associated with attraction and values. A Mercury-Venus conjunction connects these two functions, so communication and Venusian themes operate closely together.

A Mars-Saturn conjunction works differently. Mars wants to act, while Saturn imposes limits and demands control. Bringing them together can create a strong concentration of effort, but it can also produce frustration when action meets restriction.

This is why a conjunction cannot be described as simply positive or negative.

The planets involved determine how the conjunction works.

Is a Conjunction a Good Aspect?

Conjunctions are sometimes described as harmonious aspects, but that is too simple.

A conjunction involving planets that work comfortably together can be relatively easy to express. Other combinations contain more tension because the planets have very different functions.

The sign also matters.

A conjunction in Aries operates through the direct and active qualities of Aries. The same two planets conjunct in Cancer operate through a very different sign.

In a birth chart, the house containing the conjunction shows where this combined planetary influence is most strongly expressed.

Conjunctions in a Birth Chart

A conjunction in a natal chart is part of the chart for life.

Someone with the Sun conjunct Mercury, for example, has the symbolism of identity and communication closely connected in the birth chart. Someone with Venus conjunct Saturn has Venusian themes such as relationships and values closely connected with Saturn's emphasis on responsibility and limits.

The interpretation becomes more specific when the sign and house are included.

This is why astrologers do not interpret an aspect by its angle alone.

Conjunctions in Transits

Conjunctions also occur when a planet currently moving through the zodiac reaches the position of a planet in a birth chart.

This is called a transit.

For example, transiting Jupiter can form a conjunction with a person's natal Sun. The Jupiter transit then directly activates the natal Sun and its position in the birth chart.

Slow-moving planets can make conjunctions particularly important because their influence develops over a much longer period.

What a Conjunction Means in Astrology

A conjunction is a 0-degree aspect that brings two planetary influences together.

The two planets become closely connected, but the result depends on the planets involved, the zodiac sign and the part of the birth chart where the conjunction occurs.

A conjunction is therefore not automatically good or bad. Its main characteristic is concentration. Two planetary functions are brought together and have to operate in the same part of the astrological picture.

The Main Types of Aspects

• Conjunction (0°) – two planets are in the same position
• Sextile (60°) – a supportive and cooperative connection
• Square (90°) – tension, conflict, or pressure
• Trine (120°) – ease, flow, and natural ability
• Opposition (180°) – balance, contrast, or external pressure