Composite Chart Introduction #

The composite chart is a powerful tool for understanding the essence of a relationship—not as two separate people interacting, but as the relationship itself as a living entity. By finding the midpoint between each planet pair in two natal charts, we create a third chart that represents the relationship’s own identity.

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What is a Composite Chart? #

Unlike synastry, which examines how two individuals affect each other, the composite chart reveals:

• The relationship’s purpose: What the union is here to express
• The relationship’s needs: What nurtures the bond
• The relationship’s challenges: Where growth is required
• The relationship’s gifts: Natural strengths of the partnership

The composite chart is the relationship’s birth chart—it has its own Sun, Moon, and all planetary placements that describe how this particular union functions and evolves.

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How Composite Charts Work #

The Midpoint Method #

Each composite planet is calculated by finding the midpoint between the same planet in both charts:

• Composite Sun = midpoint of Person A’s Sun and Person B’s Sun
• Composite Moon = midpoint of Person A’s Moon and Person B’s Moon
• And so on for all planets

This creates a chart that neither person holds alone—it only exists when they come together.

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Reading the Composite Chart #

Core Identity: The Sun #

The composite Sun reveals the core purpose and identity of the relationship—what it’s “about” at its essence.

Emotional Nature: The Moon #

The composite Moon shows how the relationship feels, what it needs emotionally, and how partners nurture the bond.

Communication: Mercury #

Composite Mercury reveals how the relationship thinks and communicates—the shared mental wavelength.

Love Nature: Venus #

Composite Venus shows how the relationship expresses love, what it values, and its aesthetic.

Energy and Drive: Mars #

Composite Mars reveals how the relationship takes action, handles conflict, and pursues goals.

Growth and Faith: Jupiter #

Composite Jupiter shows where the relationship expands, finds meaning, and experiences abundance.

Structure and Challenges: Saturn #

Composite Saturn reveals where the relationship faces tests, must mature, and builds lasting foundations.

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The Houses in Composite Charts #

Where the planets fall in the composite houses shows which life areas are central to the relationship:

• 1st House planets: The relationship’s identity and how it presents to the world
• 4th House planets: Home life and private foundation
• 7th House planets: How partners relate to each other within the relationship
• 10th House planets: The relationship’s public face and shared ambitions

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Working With Your Composite Chart #

1. Start with the Sun: What is this relationship’s essential purpose?
2. Check the Moon: What does this relationship need to thrive emotionally?
3. Note the Ascendant: How does this relationship appear to others?
4. Examine challenging aspects: Where must the relationship grow?
5. Celebrate the gifts: What flows naturally together?

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Composite vs. Synastry #

Both are valuable for understanding relationships:

Use both for complete relationship insight—synastry for the dance between you, composite for the entity you create together.

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Generate your composite chart with our birth chart calculator.