Aspect Geometry, Orbs, Applying, and Separating: A Source-Reviewed Guide
An aspect is an angular separation compared with a target angle under a declared orb. Scope and limits are explicit.
Overview
An aspect calculation exposes the shortest angular separation, target angle, signed deviation, allowed orb, body-specific policy, motion, and applying or separating status. The page shows exactly what to verify, how to repeat the method, where a plausible near miss fails, which variants change the result, and what the evidence cannot establish.
At a glance
- Direct scope
- Reviewed finding — An aspect is an angular separation compared with a target angle under a declared orb. Applying or separating additionally needs signed relative motion and a convention for which exact contact is approaching.
- Evidence to verify
- Method checkpoint — Compute the shortest circular separation from unrounded longitudes, select an aspect table and orb policy, retain deviation from exactness, evaluate future separation with signed speeds, and label ambiguous station cases.
- Repeatable method
- Worked-case result — Mars and Saturn are eighty-eight and a half degrees apart under a six-degree square orb. Sampling a later instant shows the deviation shrinking, so the receipt marks the square applying and records the one-and-a-half-degree offset.
- Worked example
- Failure condition — Subtracting raw longitudes without circular normalization can call 359 and 1 degrees a 358-degree separation instead of a two-degree conjunction. Display rounding can create a second boundary error.
- Near miss
- Documented variant — Orb size may depend on aspect, luminary, tradition, or phase; some schools include minor aspects and others do not. A comparison must change one table at a time and expose the affected pairs.
- Limits and safety
- Use boundary — Geometric closeness does not prove a relationship event, personality trait, or causal force. Aspect interpretation remains conditional, and station uncertainty can make applying-separating language inappropriate.
Definition and Scope
An aspect calculation exposes the shortest angular separation, target angle, signed deviation, allowed orb, body-specific policy, motion, and applying or separating status.
An aspect is an angular separation compared with a target angle under a declared orb. Applying or separating additionally needs signed relative motion and a convention for which exact contact is approaching.
Evidence and Repeatable Method
Compute the shortest circular separation from unrounded longitudes, select an aspect table and orb policy, retain deviation from exactness, evaluate future separation with signed speeds, and label ambiguous station cases.
Worked Example and Near Miss
Mars and Saturn are eighty-eight and a half degrees apart under a six-degree square orb. Sampling a later instant shows the deviation shrinking, so the receipt marks the square applying and records the one-and-a-half-degree offset.
Subtracting raw longitudes without circular normalization can call 359 and 1 degrees a 358-degree separation instead of a two-degree conjunction. Display rounding can create a second boundary error.
Variants and Disagreement
Orb size may depend on aspect, luminary, tradition, or phase; some schools include minor aspects and others do not. A comparison must change one table at a time and expose the affected pairs.
Limits and Safe Use
Geometric closeness does not prove a relationship event, personality trait, or causal force. Aspect interpretation remains conditional, and station uncertainty can make applying-separating language inappropriate.
Sources and editorial basis
- Faculty of Astrological Studies: Foundation CourseFoundation Course, H2 “Module 1: Introduction to Astrology: Planets, Signs and Houses”, H2 “Module 2: Chart Skills I”, H2 “Module 3: Chart Skills II”, and H2 “Foundation Practice Module (three months tuition time)”; Module 1 key topics cover planets, zodiac signs, and twelve houses, while Module 2 covers aspects and aspect patternsA practitioner curriculum used to scope the chart vocabulary and the order in which planets, signs, houses, aspects, patterns, and synthesis are taught; it is not scientific validation.
- NCGR-PAA Level II CurriculumNCGR-PAA Level II Curriculum PDF, Part 1 “Astronomy and Chart Calculations” and Part 2 “Delineation and Synthesis”, sections 1–9A professional astrology curriculum covering astronomy, chart calculation, house systems, dignity, rulership, transits, progressions, and synthesis; it records practice standards rather than empirical proof.