Essential dignity
Essential dignity, in the context of an astrological horoscope or natal chart, refers to the relative “strength” or “weakness” of a planet based on its zodiac sign and specific degree. This strength or weakness is referred to as the planet’s essence—what the 17th-century astrologer William Lilly called "the strength, fortitude or debility of the Planets significators."
Background
Since most astrology centers around the unique energies of each planet, and their various effects on Earth, essential dignity is simply an extra tool for gauging any potential “pros” or ”cons” of a planet in a given horoscope chart. A specific planet may be more ”effective” in a horoscope based on the time of day or night the chart was cast, or an individual’s personal birth time, or simply what sign the planet is in. For example, the Sun is traditionally the ruler of Leo. The opposite sign of Leo is Aquarius. Thus, someone with the Sun in Aquarius will be said to have a “weakened” or “debilitated” Sun, or that their Sun is in detriment. The Sun’s effects for this person will not be as pronounced or felt as intensely. This is, of course, dependent on other factors unique to the individual, but the Sun and Leo represent the self, vitality, showmanship, loyalty and respect. Aquarius and its planetary ruler, Saturn, both represent necessary tasks, group success, detailed facts, and potentially difficult scenarios. In the Northern Hemisphere, Leo and the Sun are indicative of high summer. Aquarius, in January, is a zodiac sign of midwinter. The Sun in winter is lower in the sky, and thus weaker than in summer. However, not every planet in a horoscope will have an elevated or debilitated status; some planetary placements are purely “neutral”, so the perceived effects will be less noticeable or intense.By comparison, accidental dignity indicates how much strength a planet or point derives from its position in a natal chart, such as its relation to the other factors in the chart: for example, its proximity to other planets, or to the four angles of the chart, or to stars, as well as the aspects it forms with other planets or points in the chart.
For example, to find the essential dignity of Mars at 27° of Capricorn, one would first take into account the fact that the planet is already in a dignified position—Mars is said to be exalted in the sign of Capricorn—and also that it is the "bounds" ruler of the 27th degree of Capricorn and also the face ruler of the 27th degree of Capricorn. This is a considerably dignified Mars.
If the same horoscope featured an Aquarius first house—making Capricorn the twelfth house—Mars at 27° Capricorn would be placed in the twelfth house; Mars's accidental dignity would be poor, since it would be located in a weak or malevolent cadent house. The twelfth house symbolizes rest, respite, dreams, and fantasy, as well as deep sleep and escapism. These themes are contrary to the motivated, spirited, and determined energies of Mars as a planet, and of Capricorn as a sign. If Mars, in this horoscope, were to also be squared to a malevolent planet, such as Saturn, and would be receiving a dexter square aspect from malefic Saturn, ruler of Capricorn, this would further hinder Mars's strength and ability to operate benevolently. These accidental dignity factors would tend to weaken a Mars which is otherwise strong in essential dignity.
Traditional dignities
Traditionally the five essential dignities are:- Sign vs detriment
- Exaltation vs fall
- Triplicity
- Terms
- Face (or "decan")
However, Hellenistic astrologers had a very different view of the dignities. To earlier astrologers, such as Ptolemy and Vettius Valens, sign rulership, exaltation, triplicity rulership and bounds rulership were all of equal strength in influence.
Many modern astrologers take little heed of essential dignities, with the exception of sign rulerships This is in part the result of the simplification of astrological technique that occurred when astrology lost popularity beginning in the eighteenth century A growth oriented approach to astrology replaced determinism to represent any planetary placement as equal in potential of positive or negative expression.
Commonly used dignities
The most commonly used of the traditional essential dignities are listed in the table below.| Sign | Ruled by | Detriment | Exaltation | Fall |
| Aries | Mars | Venus | Sun | Saturn |
| Taurus | Venus | Mars | Moon | None |
| Gemini | Mercury | Jupiter | None | None |
| Cancer | Moon | Saturn | Jupiter | Mars |
| Leo | Sun | Saturn | None | None |
| Virgo | Mercury | Jupiter | Mercury | Venus |
| Libra | Venus | Mars | Saturn | Sun |
| Scorpio | Mars | Venus | None | Moon |
| Sagittarius | Jupiter | Mercury | None | None |
| Capricorn | Saturn | Moon | Mars | Jupiter |
| Aquarius | Saturn | Sun | None | None |
| Pisces | Jupiter | Mercury | Venus | Mercury |