What is a biquintile in astrology?

A minor aspect of 144 degrees. Twice a quintile (144°). Kepler's fifth-harmonic family. Associated with deeper creative integration than the quintile. Modern reading: integrated creative expression. The two principles work together to produce a distinctive output.

How is the biquintile angle of 144 degrees derived?

144 degrees is derived from dividing the circle into 5 parts and taking an odd multiple. Aspects are ratios of the circle rather than arbitrary distances, which is why the minor set is small: the minor aspects come from the simplest divisions, and each further subdivision produces a narrower, more contested aspect.

What orb should a biquintile use?

This site uses 1.5 degrees by default for the biquintile. Orb is a convention, not a measured quantity: there is no agreed value, practitioners commonly tighten orbs for minor aspects and for slow-moving bodies, and some assign orb to the planets involved rather than to the aspect. Widen the orb and more aspects appear; narrow it and the same chart looks sparse. Any aspect list is therefore only comparable to another when both state the orb used.

Is the biquintile a good or bad aspect?

Neither by itself. The biquintile is classed as neutral: its effect follows the bodies involved rather than the angle, so the same aspect reads very differently between, say, two benefics and two malefics.

Biquintile

144°·neutral·minor·default orb ±1.5°

Classical source

Twice a quintile (144°). Kepler's fifth-harmonic family. Associated with deeper creative integration than the quintile.

Modern Western reading

Modern reading: integrated creative expression. The two principles work together to produce a distinctive output.

Biquintile between two planets

Cited reference for this aspect between each pair of planets. Inner-planet pairs only list aspects their orbits can actually form.

Other aspects

Questions

What is a biquintile in astrology?: A minor aspect of 144 degrees. Twice a quintile (144°). Kepler's fifth-harmonic family. Associated with deeper creative integration than the quintile. Modern reading: integrated creative expression. The two principles work together to produce a distinctive output.
How is the biquintile angle of 144 degrees derived?: 144 degrees is derived from dividing the circle into 5 parts and taking an odd multiple. Aspects are ratios of the circle rather than arbitrary distances, which is why the minor set is small: the minor aspects come from the simplest divisions, and each further subdivision produces a narrower, more contested aspect.
What orb should a biquintile use?: This site uses 1.5 degrees by default for the biquintile. Orb is a convention, not a measured quantity: there is no agreed value, practitioners commonly tighten orbs for minor aspects and for slow-moving bodies, and some assign orb to the planets involved rather than to the aspect. Widen the orb and more aspects appear; narrow it and the same chart looks sparse. Any aspect list is therefore only comparable to another when both state the orb used.
Is the biquintile a good or bad aspect?: Neither by itself. The biquintile is classed as neutral: its effect follows the bodies involved rather than the angle, so the same aspect reads very differently between, say, two benefics and two malefics.

Reference, not advice

This is cultural and astronomical reference, not personal prediction or advice.

Aspect classifications follow classical Western convention. Different traditions assign slightly different orb budgets - the values shown are conservative defaults used throughout this site.

Sources

Ptolemy, Tetrabiblos

Last reviewed 2026-05-28.