Grand Trines Study
Generates an event each time three transiting bodies form a Grand Trine, each body 120° from the other two, within orb.
Kites Study
Generates an event each time three transiting bodies form a Grand Trine and a fourth opposes one of them within orb, sextiling the other two: the kite figure.
Stelliums Study
Generates an event each time three transiting bodies are conjunct within orb.
T-Squares Study
Generates an event each time two of three transiting bodies are in opposition and the third squares both of them within orb.
Yods Study
Generates an event each time three transiting bodies form a Yod, two bodies sextile each other and both quincunx a third, the apex, within orb.
Grand Squares Study
Generates an event each time four transiting bodies form a Grand Square, each opposing one of the others and squaring the remaining two, within orb.