Synastry
Relationship and compatibility astrology
Synastry is the comparison of two natal charts to analyze compatibility and relationship dynamics between people.
What we calculate
Synastry studies aspects between partners' planets, planet positions in each other's houses, and composite chart creation.
Cross-aspects
All aspects between partners' planets (Sun, Moon, Mercury, Venus, Mars and outer planets). Reveals attraction, harmony and tension points.
House Overlay
Where one partner's planets fall in the other's houses. Shows how you influence each other's life areas.
Composite Chart
Chart built from midpoints of both partners' planets. Shows the relationship itself as a living, independent entity.
Davison Chart
Chart for the average date and place between partners' births. An alternative analytical lens on the relationship.
Key Areas
Romantic Compatibility
Partners' Venus and Mars, 5th and 7th houses. Moon-Venus, Sun-Moon aspects show emotional and romantic connection.
Emotional Connection
Partners' Moons, aspects to personal planets. Shows emotional understanding and support.
Intellectual Connection
Partners' Mercury, 3rd and 9th houses. How partners communicate, understand each other, intellectual bond.
Physical Attraction
Mars and Venus, 8th house. Physical attraction, passion, sexual compatibility.
Spiritual Connection
Neptune, 12th house, Lunar Nodes. Spiritual unity, karmic bonds, transcendent understanding.
Practical Compatibility
Saturn, 2nd and 10th houses. Alignment of goals, values, plans, relationship stability.
AI analyses your synastry
Ask the AI anything about your compatibility — it has full access to all calculated data.
Key Concepts
Interpersonal Aspects
Aspects between partners' planets show relationship dynamics. Harmonious give ease, challenging ones bring growth through challenges.
House Overlay
One partner's planets fall in other's houses, activating those life areas and showing mutual influence.
Composite Chart
Chart built from midpoints of partners' planets. Shows relationship as separate entity.
Compatibility Score
Analysis of element harmony, planetary qualities, Moon and Venus aspects. Saturn (stability) and Lunar Nodes (karma) are also key.
Relationship Timing
Transits and progressions show favorable times for starting relationships, important decisions, and periods of challenge.
Davison Chart
Chart for average date and place between partners' births. Alternative view of relationship.