Library
relationship comparison · Composite Chart

Composite Chart

Composite Chart explains midpoint calculation, angles, houses, synastry differences, a worked example, and non-fated interpretation limits.

Term
Composite Chart

Editorially reviewed: · Reviewed by OpenFate · Editorial Methodology

Overview

The composite Sun is 0°, with the 180° antipode disclosed as the alternate midpoint. This is the worked result for Composite Chart; it remains conditional and does not turn geometry or timing into a verdict. The comparison method is explicit: Declare the midpoint and angle convention, pair like points, resolve the 0°/360° wrap, and retain the result as a constructed chart rather than an observed sky. A composite chart is one constructed relationship chart made from corresponding midpoints in two natal charts. It differs from synastry, which compares two charts, and from a Davison chart, which uses a midpoint in time and place. Composite planets, angles, and houses describe symbolic relationship structure only after the midpoint and birth-time conventions are declared.

At a glance

Topic
Composite Chart
Content family
relationship comparison
Case inputs
A ☉ at 350°; B ☉ at 10°; shortest-arc midpoint rule
Measured finding
the composite Sun is 0°, with the 180° antipode disclosed as the alternate midpoint
OpenFate support
Free advanced astrology calculator
Use boundary
conditional · source-audited · non-fated

Definition and exact scope

A midpoint composite constructs one relationship chart from the shortest-arc midpoints of two sets of natal positions.

Calculation or decision rule

Declare the midpoint and angle convention, pair like points, resolve the 0°/360° wrap, and retain the result as a constructed chart rather than an observed sky. The receipt retains the chosen input record, reference frame, tolerance, and version, then identifies the first step where an independent recalculation diverges.

Calculate each composite point from the shortest-arc zodiacal midpoint of the matching natal points, explicitly resolving the 0°/360° wrap and antipodal alternative. Use accurate birth times before calculating composite angles or houses. Read the resulting chart alongside both natal charts and synastry; do not treat the constructed midpoint chart as an observed sky or a third person.

Worked case and illustrative near miss

A ☉ at 350°; B ☉ at 10°; shortest-arc midpoint rule. the composite Sun is 0°, with the 180° antipode disclosed as the alternate midpoint.

Illustrative near miss; does not qualify: Averaging 350 and 10 to 180° without wrapping the zodiac chooses the antipode silently.

School, model, and context variants

Composite positions can violate real planetary elongation limits, so the chart is not a dated event chart and must not be treated as one.

Product, safety, and verification boundary

OpenFate offers a free, temporary calculator for solar and lunar returns, planetary secondary progressions, solar arc and planetary-midpoint composites. Progressions and composites do not include houses or angles. These advanced results are not saved or added to reports or Orb; consult the method page for the exact supported conventions. Composite Chart preserves contrary observations and uncertainty. It cannot replace consent, professional help, location research, or a person’s account.

OpenFate Western astrology methods and evidence

Sources and editorial basis

  1. NCGR-PAA Level III Curriculum
    NCGR-PAA Level III Curriculum, “Synastry” and “Solar Return”, pp. 2–3; “Classical Astrology: Timing”, p. 3; forecast bibliography, pp. 5–6The NCGR-PAA advanced curriculum lists the inputs, calculation distinctions, and synthesis steps taught for synastry, composite and Davison charts, solar and lunar returns, transits, progressions, solar arcs, and profections. It documents professional curriculum scope, not empirical validation.
  2. Astrodienst Comparative Astrology and Synastry Reference
    Astrowiki “Comparative Astrology”, section listing Synastry, Midpoint Composite, and Davison methods; “Synastry”, section “Methods”Astrodienst reference material distinguishing synastry overlays, midpoint composite charts, and Davison relationship charts. It is used for method ownership and calculation distinctions, not to certify attraction or compatibility.
  3. Organization for Professional Astrology: Code of Ethics
    OPA Code of Ethics §1(c) Accurate Data, §1(j) Fatalistic Statements and client autonomy, §1(k) Charts of Others, and §2(f) Scope of Practice and referralAn independent practitioner code covering accurate data, confidentiality, client welfare, informed practice, competence, and referral boundaries.
Was this article helpful?

Search the Wiki