Traditional astrology uses essential dignities to describe a planet’s relationship with the sign or degree it occupies. Domicile, exaltation, detriment and fall are familiar concepts; triplicity, bounds and decans provide finer distinctions. Planetary conditions also include motion, visibility, combustion and several measures of accidental strength.
Essential versus accidental dignity
Essential dignity is based primarily on zodiacal placement and rulership schemes. Accidental dignity considers circumstances such as house position, angularity, speed and orientation relative to the Sun. A planet in its domicile is not automatically easy to experience, and a planet in detriment is not inherently harmful; astrologers weigh the complete configuration.
Domicile, exaltation, triplicity and terms
Classical domicile rulership connects planets to signs, for example Mars with Aries and Scorpio, Venus with Taurus and Libra, and Mercury with Gemini and Virgo. Exaltation assigns traditional special positions, such as the Sun in Aries and the Moon in Taurus. Triplicity rulers vary with elemental groups and sect; bounds and decans allocate smaller zodiacal divisions. These techniques belong to different historical schools and should be named accurately.
Retrograde, combustion and other conditions
A retrograde planet appears to travel backward in zodiacal longitude from Earth’s perspective. Combustion describes close proximity to the Sun in traditional practice, while cazimi refers to a very close solar conjunction interpreted differently. Sect, planetary phase and rulership can materially alter a judgment. The useful question is how multiple conditions interact, not whether a single label is positive or negative.
Continue exploring
For the wider context, return to Planets in Astrology. Related topic pages in this section expand these ideas with placement-specific interpretations.