Western relationship chart
Synastry chart aspects and house overlays
A synastry chart compares the measured positions from two natal charts to identify conjunctions, sextiles, squares, trines, oppositions and house overlays.
Inter-chart aspects
Each planet in one chart can form an aspect to a planet or angle in the other. The exact separation and orb should be shown alongside the interpretation.
House overlays
When accurate birth times are available, one person's planets can be placed into the other person's houses to show which life areas are emphasized.
Use the complete pattern
A single challenging or harmonious aspect should not define the whole relationship. Repeated themes across several contacts are more informative.
Frequently asked questions
What is the difference between synastry and a composite chart?
Synastry compares two natal charts directly. A composite chart creates a separate chart from calculated midpoints between the two charts.
Which synastry aspects are strongest?
Close conjunctions and aspects involving the Sun, Moon, angles and personal planets are often weighted strongly, but the full context matters.
What is a synastry orb?
It is the difference between the measured inter-chart angle and the exact aspect angle.