A chart created by combining two natal charts to analyze the dynamics of a relationship.
Definition
The composite chart is a relationship-focused astrological tool derived by mathematically averaging the planetary positions of two individual natal charts. Each planet or point is calculated as the midpoint between the respective placements in the two charts. The composite chart represents the shared dynamics, purpose, and challenges of the relationship as a single entity, rather than the individual experiences of the participants. It is most often used in romantic, familial, or business relationships to assess how two people function together as a unit. The composite chart is distinct from synastry, which focuses on comparing two separate charts. Edge cases include relationships with large age gaps, where outer planets may dominate the composite chart due to their slow movement.
In a chart
A composite chart is not part of an individual’s natal chart but is created as a separate chart. Look for the midpoints of all planets and points from both natal charts. Key features to analyze include the composite Sun, Moon, and Ascendant to understand the core identity, emotional dynamics, and outward expression of the relationship.
Examples
- A composite Sun in Libra suggests a relationship focused on harmony and mutual understanding.
- A composite Moon in Scorpio indicates intense emotional bonding and transformative challenges.

