Essential dignities
Essential dignities measure how well a planet expresses its own nature given the sign and degree it occupies. Lilly's grid in Christian Astrology gives each degree of the zodiac a domicile lord, an exaltation lord, a triplicity lord, a term lord, and a face lord — five rulers for every degree. A planet in its own dignity acts directly; in another's, it acts through that other.
Why dignities exist
Classical astrology reads a planet through two questions: what it signifies, and how strongly. The first is fixed — Saturn signifies time, structure, hard limit. The second varies. A planet in the sign it rules, or in the sign of its exaltation, signifies its theme cleanly and from its own resources. A planet in detriment or fall is forced to express its theme through a foreign idiom, which the tradition reads as weakness, distortion, or borrowed authority.
The five dignities
Domicile (rulership) is the strongest: the Sun in Leo, the Moon in Cancer, Mercury in Gemini and Virgo, Venus in Taurus and Libra, Mars in Aries and Scorpio, Jupiter in Sagittarius and Pisces, Saturn in Capricorn and Aquarius. Exaltation is honorific elevation: Sun in Aries, Moon in Taurus, Mercury in Virgo, Venus in Pisces, Mars in Capricorn, Jupiter in Cancer, Saturn in Libra. Triplicity divides the elements among three lords each, by sect. Terms (bounds) parcel each sign into five unequal subdivisions. Faces give each ten-degree decan a planetary lord. Lilly tabulates point-scores: domicile 5, exaltation 4, triplicity 3, term 2, face 1.
Detriment and fall
The opposites of the dignities are the debilities. Detriment is the sign opposite domicile (Sun in Aquarius, Moon in Capricorn, etc.); fall is the sign opposite exaltation. A planet in detriment or fall is read as compromised in its native expression. Peregrine — a planet with no dignity at all in its degree — is a third common debility, treated as wandering or unanchored.
How Netra uses dignities
The Dignities tab on every chart computes Lilly's full grid, including the term and face lords for the actual degree, and reports an aggregate score per planet. The Almuten panel synthesizes the same data into a strongest-planet ranking.
Illustrative natal chart — the technique above applies to any chart you compute in Netra.
Sources
- William Lilly, Christian Astrology (1647), Book I
- Claudius Ptolemy, Tetrabiblos, Book I (Ashmand, 1822)
- Guido Bonatti, Liber Astronomiae
See Sources for the full corpus and the public-domain policy.
Related
- Almuten — The planet with the most aggregate dignity at a given degree — the synthesis of essential dignity into a single ruler.
- Mutual reception — Two planets each hosting the other in a dignity — a structural exchange of authority.
- Sect — The diurnal–nocturnal split that determines which planets are in their preferred environment.
- Hyleg and alcocoden — The classical pair indicating life force and its allotted span — Ptolemy's longevity technique.