Aspects: the angles between
An aspect describes an angular relationship between two bodies in the zodiac.
The physical explanation
Here we compare Earth-centred ecliptic longitudes: a conjunction is 0 degrees apart, a square 90 degrees, and an opposition 180 degrees. We use the shorter angle around the circle, so 359 degrees and 1 degree are only 2 degrees apart. Latitude is left out: equal longitudes do not guarantee an overlap in the sky or an eclipse. An orb allows a chosen deviation from an exact angle. Applying means that deviation is shrinking now; separating means it is growing. Retrograde motion can change the trend. An applying aspect need not reach exactness before a reversal.
Explore real dates in the Time Machine ↗Two directions, one angle
Move B around the circle. These are teaching markers, separate from your real sky selection.
A is held at the top to compare the angle. Radii are illustrative; this is not physical distance or a local sky map.
Square
A quarter of the circle apart.
With a 3° orb, 90° is included. An orb is an allowed deviation, not a physical zone.
The traditional association
In Western astrology, conjunctions are often read as combining the two bodies’ symbolism, squares as tension that calls for adjustment, and oppositions as a polarity to balance. The bodies and wider chart shape the reading. Orb choices vary between traditions and practitioners. These symbolic associations are separate from the measured angles and do not predict inevitable events.
Reference: Astrodienst · aspects, orbs and interpretive conventions ↗
Editorially reviewed 2026-10-24 · prepared 2026-10-24.