Aspect Patterns and Chart Shapes

Why patterns are read before single aspects

A single aspect links two planets. Mars square Saturn, for instance, describes a conversation between drive and restraint. But planets rarely sit in pairs only. If Mars is also opposite the Moon, and the Moon is square Saturn too, those three no longer act as separate links. They form a T-square, and the pressure of the whole triangle runs into one planet. Reading the three aspects one by one would miss that.

This is why astrologers look for patterns early. A pattern tells you which planets act as a team, which of them carries the load, and whether the team runs on ease, on friction or on a mix of both. Once you have found the patterns, the single aspects fill in the specific tone between each pair.

This family covers fifteen structures. Eight are aspect patterns, built from specific angles between three to six planets. Seven are chart shapes, which ignore the individual aspects and look at how all ten planets are spread around the wheel. Each page sets out the rule, explains how the pattern feels from inside, and covers its gifts, its difficulties and ways to work with it. Most charts hold at least one shape and many hold a pattern; a few hold none, and that is also informative, since the planets then act more independently.

The eight aspect patterns

The aspect patterns divide roughly into tense, easy and mixed.

The tense patterns are built from squares and oppositions. A T-square is two planets in opposition, both square a third, the apex, which takes the strain. A grand cross is four planets in two oppositions, each square its neighbours, usually all in cardinal, fixed or mutable signs. These patterns push. People with them often achieve the most in the area that gave them the most trouble.

The easy pattern is the grand trine: three planets about 120° apart, usually one in each sign of an element. It marks talent that runs without effort, and the risk is that it never gets used.

The mixed patterns combine flow and tension. A kite is a grand trine with a fourth planet opposite one of its corners and sextile the other two, which gives the talent a target. A mystic rectangle joins two oppositions with two trines and two sextiles. A grand sextile places six planets about 60° apart around the whole wheel and contains two grand trines and three oppositions. A yod is two planets in sextile, both quincunx (150°) a third, the apex; it is the one pattern here that uses a minor aspect, so astrologers keep its orbs narrow.

The stellium belongs to this family even though it is defined by place rather than angle: three or more planets in one sign or house, the outer ones within about 10° of a chain. It concentrates the chart instead of linking distant parts of it.

In every pattern with an apex or focal planet, that planet deserves the closest look. Its sign shows the style in which the pattern is resolved, its house shows where, and its nature shows how.

The seven chart shapes of Marc Edmund Jones

In 1941 the American astrologer Marc Edmund Jones proposed that the way the planets are distributed around the wheel describes a basic temperament, before any sign or aspect is read. He named seven types, and astrologers still use his names.

In a locomotive, the planet that leads the group in the direction of the daily motion is read as the engine. In a bucket, the handle's sign and house say where the energy of the other nine planets pours out.

Shapes overlap at the edges, and real charts rarely match an ideal drawing. Check them in order from the tightest: if all ten planets fit within about 120°, it is a bundle, even though it also fits inside half the wheel. Then test for a bowl or bucket, then a locomotive, then a seesaw. A chart that fits none of these is a splash or a splay, depending on whether the spread is even or clustered.

Jones counted only the ten planets, so the Moon's nodes, Chiron and the angles do not change the shape.

Finding patterns in your own chart

The free birth chart draws the aspect lines inside the wheel, with tense aspects in red and easy ones in blue or green. Patterns show up as shapes in those lines: a red triangle with one long side is a T-square, a blue triangle is a grand trine, a red square crossed by two lines is a grand cross. For the chart shape, ignore the lines and look at where the planet glyphs sit around the rim.

Orbs matter. A pattern made of three exact aspects is far louder than one stretched to the limit of every orb. The patterns here assume the orbs the rest of the library uses for each aspect, and the yod uses narrower ones, about 2° to 3°.

Once you have found a pattern, read its page, then the aspect pages for each pair inside it, and then the sign and house pages of the focal planet. The pattern gives the structure, and the planets inside it give the content.