Geometry
Exact angle: 60°. Lúmina working orb: 4°.
Interpretive function
Describes a cooperative opening that still benefits from deliberate participation.
Why the planets matter
The aspect describes the relationship between functions; the planets tell us which functions are negotiating. A Venus–Saturn square is therefore not the same problem as a Mercury–Mars square.
Orb policy
Orb practice varies among astrologers. The numbers above are Lúmina v1 reproducibility standards rather than claims of universal agreement.
Opportunity requires use
The sextile links signs with compatible polarity but different elements. Its symbolism is cooperative without being as self-operating as the trine. A skill indicated by sextile often becomes more visible when circumstances or deliberate practice activate the route.
Applying and separating
An applying aspect is moving toward exactness; a separating aspect has already perfected. This distinction can change emphasis and timing, but it does not erase the aspect geometry or the condition of the planets involved.
Natal aspect versus transit
In transit work, a sextile can describe a window in which two functions can be coordinated with less friction. It still does not guarantee an event; an available route must be used.
Interpretation checklist
- Name both planetary functions.
- Check sign and house condition.
- Measure the actual orb.
- Distinguish natal pattern from temporary transit.
- Confirm the symbolism against observed context.
Three concrete examples
Mercury–Venus can make language and value easier to coordinate; Mars–Saturn can create a workable route between action and structure; Moon–Jupiter can help regulation and confidence cooperate. The available route still needs use.
What not to conclude
An aspect is not an event generator. It describes geometry between functions. A natal aspect cannot prove a diagnosis, relationship outcome or future incident, and a transit requires actual natal contact and context before a specific claim is justified.