Significator (Horary)
Definition
A significator is the planet that stands in for a particular person, party, or thing in a horary chart. You find it through house rulership: whichever planet rules the house that covers the topic speaks for that topic. The first-house ruler signifies the querent — you, the one asking — the ruler of the topical house signifies the quesited (the matter asked about), and the Moon co-signifies in every chart. Aspects between significators carry the chart's main testimony.
In Tradition
Arabic and medieval astrologers built their judgment on what passes between the two main significators: whether they move toward each other or apart, what aspect they form, the receptions they exchange (one planet hosting the other), and whether a third planet steps in. Sahl ibn Bishr tells the astrologer to "establish the significators: the Lord of the Ascendant represents the querent; the Lord of the house of the quesited represents the matter," then to trace what happens between them.
In Practice
Once both main significators are identified, the astrologer weighs each one's essential dignity (its strength by sign) and accidental condition (its house, speed, direction, and whether it is clear of combustion — being burned up close to the Sun) — and the aspect the two will form. An aspect they are moving toward promises the matter will perfect, or come to pass; one they are moving away from describes something already over. Reception — each significator sitting in the other's dignity — eases a hard aspect and signals good will between the parties. Other things block the promise: prohibition (a third planet cutting in), refranation (a significator turning retrograde before the aspect completes), or combustion under the Sun. The Moon's next aspect adds a co-witness, and when the two significators cannot reach each other directly, a third planet may still carry the matter by translation or collection of light. The same logic runs in primary directions, where a significator is the natal point that a directed promittor moves to meet.
Historical Origin
The significator–quesited–perfection framework is set out in Sahl ibn Bishr's On Questions (9th century), developed by Masha'allah and Bonatti in the Liber Astronomiae (13th century), and brought into English in William Lilly's Christian Astrology (1647). Beneath it lies the Hellenistic doctrine of universal and topical significators found in Dorotheus, Ptolemy, and Valens; the wider Greek-to-Arabic transmission is documented in Holden's History of Horoscopic Astrology.
Etymology
Origin: Latin. Meaning: From significare, "to make signs, indicate," from signum (sign) + facere (to make)..
Further Reading
- William Lilly, Christian Astrology
- Sahl ibn Bishr, On Questions
- Guido Bonatti, Liber Astronomiae