Sesquiquadrate

A sesquiquadrate (also called sesquisquare) occurs when two planets are 135 degrees apart — that is, a square plus a semi-square. It is read as a minor hard aspect, with the friction quality of a square but the lower intensity of the minor family. Orbs are tight, typically 2 degrees. Sesquiquadrates often manifest as a chronic, slow-building friction between two parts of life that don't quite clash but don't quite cooperate either. The cosmobiology tradition treats sesquiquadrates with the same weight as squares and oppositions; mainstream Western astrology treats them as supplementary detail. Most useful when transits to natal points form a sesquiquadrate and the theme of slow-building friction is recognizable.