Applying Aspect
Applying aspects are foundational to predictive work in astrology, especially horary, where whether a significator applies to or separates from another determines whether a matter can still come to pass. They signal that a planetary dynamic is building toward completion, giving astrologers a directional quality to their reading of any configuration. Understanding application versus separation is one of the first and most important distinctions a student of traditional astrology must master.
Definition
An applying aspect occurs when a faster-moving planet is moving toward an exact angular relationship with a slower-moving planet, meaning the two bodies are approaching the precise degree of the aspect and have not yet reached it. Because the aspect has not yet perfected, it represents potential, promise, and developing conditions — something in the process of becoming rather than already established. In traditional astrology applying aspects carry greater weight and urgency than separating ones, particularly in horary astrology where an applying aspect between two significators typically indicates that a matter will come to fruition. The speed and directness of the application matter: a planet moving swiftly toward another via a tight orb with no intervening aspects translates a higher probability of the expected event than one moving slowly with obstacles in the path. In natal astrology applying aspects are thought to color the native's future trajectory, describing conditions and themes that will develop increasingly over the course of a lifetime. The concept of application also extends to the Moon, whose fast movement makes every applying lunar aspect a predictive indicator of near-term events and conditions. Whether the applying planet is direct or retrograde also affects interpretation, retrograde application complicating or reversing the straightforward development of the expected outcome.
Worked Example
In a horary chart asking whether a job offer will materialize, the Moon at twelve degrees Virgo applies to a conjunction with the Sun at seventeen degrees Virgo — the significator of the querent moving toward the significator of the matter. The applying aspect suggests the matter is still in play and heading toward a conclusion. Had the Moon already passed the Sun and now separated, the question's window would be effectively closed and the matter likely already decided in some form.
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