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Data quality and method

What is an aspect orb in astrology, and how wide should it be?

An orb is the allowed distance from an exact aspect; different schools use different widths, so transparent settings matter more than pretending there is one universal number.Reviewed · 2026-08-24 · Educational astrology content
Direct answer

An aspect orb measures how far two factors are from an exact angular relationship. Astrology traditions vary by aspect, planet, luminary, chart type, and applying or separating status. A chart tool should show or document its orb policy so results can be reproduced.

Key points

  • Wider orbs create more aspects.
  • The Sun and Moon often receive wider allowances.
  • Minor aspects usually use narrower allowances.
  • Changing an orb can alter pattern detection such as a T-square.

Method

  1. Choose an orb table before interpreting.
  2. Prioritize exact and repeated aspects.
  3. Test whether a conclusion survives a modest setting change.

Limits and responsible use

  • There is no scientifically validated universal orb.
  • Do not hide a custom orb when comparing two chart tools.