Technical Approach to Synastry
Technical Approach to Synastry
Use precise orb allowances and midpoints to fine-tune compatibility analysis. Composite charts supplement synastry by showing the relationship as its own entity.
Backlink: Synastry Overview.
🧭 Technical / Comprehensive Focus — Synastry
What to look at, in order:
1. Make an inter-aspect grid A×B; use tighter orbs than natal (≈ 6° majors, ≈ 2° minors) or Lilly moieties
2. Weight contacts to luminaries, angles and chart rulers highest
3. Count harmonious vs. dynamic inter-aspects only after weighting — numbers alone mislead
4. Repeat themes: a contact that appears in both directions (A→B and B→A) is emphasised
No new chart is cast: the two natal charts are overlaid. Two techniques are combined — inter-aspects (every body of A against every body of B, with the same aspect arithmetic as natal work) and house overlays (where A’s planets fall in B’s houses, and vice versa). Synastry is distinct from the composite chart (midpoints of positions) and the Davison chart (midpoint in time and space).
Building blocks to pull
Aspects (exact angles & orbs) · Signs (dignity tables) · Houses · Calculated Points (ASC/MC formulas)
Questions to answer
- Which bodies are strongest by dignity, angularity and sect?
- Which aspects are tightest (smallest orb) and applying?
- Which house rulers link which life areas?
See the matching checklist: Analysis Instructions (Comprehensive) · back to Synastry overview
Sources (method)
- Ronald C. Davison, Synastry: Understanding Human Relations Through Astrology (1977) — the Davison relationship chart (midpoint in time and space)
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (Amor Fati, 2017) — house names, planetary joys, lots, sect