Houses & Aspects

The architecture of the sky

To understand true astrological compatibility, we must look at the interactions between all planets, the specific areas of life they affect, and the mathematical angles they form.

The 12 houses

A birth chart is divided into 12 sections called Houses. If planets are the actors and signs are their costumes, the Houses are the stages where the action takes place.

For couples, three houses are particularly important:

The 5th House: Romance, playfulness, creativity, and pleasure.
The 7th House: The primary house of committed partnerships, equality, and marriage.
The 8th House: Deep intimacy, shared resources, and psychological transformation.
Natal ChartFranklin
ASCICDSCMCASCMC

Franklin Roosevelt’s natal chart — the lines radiating from the center divide the wheel into 12 houses. Each house governs a different area of life, and the Ascendant (left) marks the cusp of the 1st house. Birth data sourced from public records; chart shown for educational purposes only and does not imply endorsement.

The aspects: geometry of connection

Aspects are the specific geometric angles that planets form with one another. These angles are the mathematical foundation of everything you see on the StellarTies dashboard.

Conjunction (0°): Planets occupy the same position, blending their energies into intense, unified focus.

Sextile (60°): A highly supportive angle that provides opportunity, compatibility, and ease of communication.

Square (90°): An angle of friction and tension. While challenging, squares are highly energizing and represent areas where a couple is forced to evolve. This geometry directly powers the Growth score.

Trine (120°): An angle of supreme harmony and natural ease. Trines indicate areas where partners understand each other without effort. This drives high Flow scores.

Opposition (180°): Planets sit across from each other, creating a mirror-like push-pull polarity that requires conscious balance.

Quincunx (150°): Two energies that don't naturally "see" each other, requiring continuous adaptation.
Synastry Chart
● Elizabeth● Robert

Synastry chart showing planetary positions for Elizabeth and Robert with 41 aspects between their planets.

Elizabeth Barrett & Robert Browning — the lines connecting planets between the two charts are aspects. Different colors represent different geometric relationships. Birth data sourced from public records; chart shown for educational purposes only and does not imply endorsement.

Orbs: how close is close enough?

Aspects are rarely exact to the degree. The allowable margin of error is called an orb. A tighter orb means a more powerful connection.

Tight orbs (0°–2°): Core dynamics that define the relationship.
Medium orbs (2°–5°): Significant influences that shape the overall tone.
Wide orbs (5°–8°): Background flavors — felt but not primary drivers.

StellarTies uses an orb-weighted scoring system where tighter aspects receive more weight. Personal planet pairs get wider orbs than outer planet contacts, reflecting their stronger felt impact.

Reading the whole picture

Individual aspects tell partial stories. A single square might look alarming in isolation, but when supported by trines and sextiles in related areas, it often becomes a source of productive chemistry rather than conflict.

The power is in synthesis — seeing how all aspects interact, which themes dominate, and how they balance. StellarTies organizes this into four clear dimensions and then uses expert-curated interpretation to translate the geometry into actionable insight.

Astrological houses and aspects are interpretive frameworks. They offer a lens for understanding relationship dynamics, not deterministic predictions.

See it in action

Enter your birth data and your partner's to see these concepts come alive in your relationship.

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