Velvet Zodiac

Midpoint relationship chart

Composite chart,
no destiny score.

A composite chart takes the shortest-arc midpoint between matching placements in two natal charts. This version calculates Sun through Pluto, adds Moon and Rising when both birth times support them, and ranks the tightest internal aspects without turning them into a destiny score.

Shortest-arc midpoint math Sun through Pluto midpoint positions Tightest major aspects ranked by orb Local storage only when saved
Person one
Person two

If either birth time is missing, this tool omits Moon and Rising rather than pretending a noon value is precise. Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto still remain available.

Composite versus synastry

Two different questions about the same relationship.

Synastry keeps both natal charts intact and asks how one person’s placements aspect the other person’s. Composite instead creates a third chart from midpoints. That can be useful for describing the tone a relationship develops when it operates as a unit, but it should not erase either individual chart.

Use composite when you are asking about the bond’s shared style. Use synastry when you want to see how two distinct people stimulate, support, or challenge one another. Then check both interpretations against what actually happens in the relationship.

Two violet natal chart wheels joining through fine gold paths into one shared midpoint chart
Composite is a third midpoint chart. It complements two natal charts; it does not replace either person.
Browse composite aspect guides Compare Composite with Davison + time-range survival Open the synastry calculator Build a relationship report

Composite chart FAQ

What is a composite chart?

A composite chart is built from the midpoint between matching placements in two natal charts. Astrologers use it as a symbolic chart for the relationship as a shared entity, alongside—not instead of—synastry and real relationship context.

How does this calculator handle 0° Aries?

It uses the shorter arc between two longitudes. For example, the midpoint between 359° and 1° is 0°, not 180°. The formula normalizes the difference before dividing it in half.

Do both people need a birth time?

A date and place are required for both people. If either time is missing, this implementation omits Moon and the composite Ascendant rather than presenting a guessed noon result as precise. Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto remain available.

Does the calculator show composite aspects?

Yes. After calculating the midpoint positions, Velvet Zodiac checks the major conjunction, sextile, square, trine, and opposition patterns between those composite points and ranks the tightest results by orb. These are internal composite aspects, not synastry aspects between the two natal charts.