← Encyclopedia of Astrology · lesson 161/235
Grand Cross
The shape
A Grand Cross takes four planets placed roughly 90° apart around the wheel. They make two oppositions that cross each other at right angles, and every neighbouring pair is in a square. Counted exactly, that is four squares and two oppositions among the four planets — every pair accounted for, nothing easy among them.
A worked example: the Sun at 15° Taurus, Mars at 14° Leo, Saturn at 17° Scorpio and the Moon at 16° Aquarius. Sun opposes Saturn, Mars opposes Moon, and each planet squares the two on either side of it, every contact within three degrees.
What it is made of
A Grand Cross is four T-squares at once. Take either opposition and either of the other two planets as apex and you have a T-square: Sun–Saturn with Mars at the apex, Sun–Saturn with the Moon, Mars–Moon with the Sun, Mars–Moon with Saturn. Those four are parts of the cross, not four separate findings, which is why a chart shows the cross as one figure that contains them.
No apex
Where a T-square has a focal planet and an empty leg to release into, the Grand Cross has neither. Every corner is pulled two ways and faced by a third. The tradition describes the result as being pulled in four directions at once: a heavy load, and with it a great deal of determination once a centre is found. Nicholas deVore puts the contrast simply — the T-square is dynamic, the Grand Cross tends to diffusion.
By mode
Since each sign is 90° from the other signs of its mode, a clean cross sits in one mode, and that mode is its character:
- Cardinal — busy, initiating, scattered across many starts; it asks for focus and follow-through.
- Fixed — a slow build of pressure, stubborn, with remarkable endurance and a powerful release.
- Mutable — a chameleon's adaptability that can lose its own shape; it asks for a defined sense of self.
In a chart
A natal Grand Cross is uncommon. It tends to describe someone who carries a lot, and who can become very productive once they stop trying to satisfy all four ends at once. The four houses involved show which areas of life are in the cross.
In the sky
A Grand Cross in the passing sky is a notable configuration, read as a period of strain on the affairs of its mode. A transiting planet can also fill the empty leg of a natal T-square and turn it, for a while, into a cross — a transit with a clear start and end.