Decan (astrology)

Last updated

In astrology, a decan is the subdivision of a sign. In order to give fuller interpretation to the zodiac signs, ancient astrologers subdivided each sign into periods of approximately ten days. These divisions are known as the "decans" or "decanates" and cover modifications of individual traits, attributed to minor planetary influences, which temper or blend with the ruling influence of the period. The ten-day spans are somewhat arbitrary in order to allow for the five (and sometimes six) extra days in the year beyond the 360 days required for the thirty-six decans. [1] [ better source needed ]

Contents

Each sign is allocated a triplicity, consisting of three of the four classical elements air, water, earth or fire, and is therefore subdivided into three equal parts of 10 degrees each; these parts are referred to as decans or decanates.

Each decan of a sign is assigned rulership by the planet ruling the sign and secondary rulership by the planet ruling the decan.

In Ptolemy

The decans and their rulers are assigned as follows as based on the description by the Alexandrian Egyptian astrologer, Ptolemy, from whose Tetrabiblos are derived most of the principles of western astrology: [2]

SignDomicile rulerExaltation ruler0–10 degrees10–20 degrees20–30 degrees
Aries Mars Sun Mars Sun Venus
Taurus Venus Moon Mercury Moon Saturn
Gemini Mercury N/A Jupiter Mars Sun
Cancer Moon Jupiter Venus Mercury Moon
Leo Sun N/A Saturn Jupiter Mars
Virgo Mercury Mercury Sun Venus Mercury
Libra Venus Saturn Moon Saturn Jupiter
Scorpio Mars N/A Mars Sun Venus
Sagittarius Jupiter N/A Mercury Moon Saturn
Capricorn Saturn Mars Jupiter Mars Sun
Aquarius Saturn N/A Venus Mercury Moon
Pisces Jupiter Venus Saturn Jupiter Mars

Traditional Chaldean rulerships

"The Faces of the Planets" * (Lilly) [3]
SignFirst Decan ruler

(0–9.999 deg.)

Second Decan ruler

(10–19.999 deg.)

Third Decan ruler

(20–29.999 deg.)

Aries Mars Sun Venus
Taurus Mercury Moon Saturn
Gemini Jupiter Mars Sun
Cancer Venus Mercury Moon
Leo Saturn Jupiter Mars
Virgo Sun Venus Mercury
Libra Moon Saturn Jupiter
Scorpio Mars Sun Venus
Sagittarius Mercury Moon Saturn
Capricorn Jupiter Mars Sun
Aquarius Venus Mercury Moon
Pisces Saturn Jupiter Mars

* as used as an essential dignity in astrology.

Notice that rulerships follow a repeating pattern, the Chaldaean order of the planets: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon, based on a geocentric cosmological model.

Modern rulerships

Modern astrology updates the rulerships. Decans or "faces" are the least important of the essential dignities, representing about one-fifteenth of a planet's overall strength in medieval astrology. [4] [ better source needed ]

The decans and their rulers are assigned as follows as based on the concepts of modern Western astrology  :

Sign1st decan ruler2nd decan ruler3rd decan ruler
Aries Mars Sun Jupiter
Taurus Venus Mercury Saturn
Gemini Mercury Venus Uranus
Cancer Moon Pluto Neptune
Leo Sun Jupiter Mars
Virgo Mercury Saturn Venus
Libra Venus Uranus Mercury
Scorpio Pluto Neptune Moon
Sagittarius Jupiter Mars Sun
Capricorn Saturn Venus Mercury
Aquarius Uranus Mercury Venus
Pisces Neptune Moon Pluto

See also

Citations

  1. Anon (n.d.).
  2. Ptolemy (1822), p. [ page needed ].
  3. Lilly (1999a), pp. 104–105.
  4. Jones (2011).

Related Research Articles

<span class="mw-page-title-main">Zodiac</span> Area of the sky divided into twelve signs

The zodiac is a belt-shaped region of the sky that extends approximately 8° north and south of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. Also within this zodiac belt appear the Moon and the brightest planets, along the their orbital planes. The zodiac is divided along the ecliptic into 12 equal parts ("signs"), each occupying 30° of celestial longitude. These signs roughly correspond to the astronomical constellations with the following modern names: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces.

<span class="mw-page-title-main">Western astrology</span> System of astrology used in the Western world

Western astrology is the system of astrology most popular in Western countries. Western astrology is historically based on Ptolemy's Tetrabiblos, which in turn was a continuation of Hellenistic and ultimately Babylonian traditions.

<span class="mw-page-title-main">Horary astrology</span> Form of astrology for answering questions posed

Horary astrology is an ancient branch of horoscopic astrology in which an astrologer attempts to answer a question by constructing a horoscope for the exact time at which the question was received and understood by the astrologer.

<span class="mw-page-title-main">Astrological sign</span> Twelve 30° sectors of the ecliptic, as defined by Western astrology

In Western astrology, astrological signs are the twelve 30-degree sectors that make up Earth's 360-degree orbit around the Sun. The signs enumerate from the first day of spring, known as the First Point of Aries, which is the vernal equinox. The astrological signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. The Western zodiac originated in Babylonian astrology, and was later influenced by the Hellenistic culture. Each sign was named after a constellation the sun annually moved through while crossing the sky. This observation is emphasized in the simplified and popular sun sign astrology. Over the centuries, Western astrology's zodiacal divisions have shifted out of alignment with the constellations they were named after by axial precession of the Earth while Hindu astrology measurements correct for this shifting. Astrology was developed in Chinese and Tibetan cultures as well but these astrologies are not based upon the zodiac but deal with the whole sky.

<span class="mw-page-title-main">Geomantic figures</span> Symbols used in divinatory geomancy

The 16 geomantic figures are primary symbols utilized in geomancy, an ancient divinatory practice. Each figure consists of four lines representing the classical elements and can be interpreted through various methods and questions. Originating from Middle Eastern traditions, geomancy was introduced to Europe in the Middle Ages, where it acquired astrological meanings and new interpretive layers. These figures exhibit a superficial resemblance to the ba gua, the eight trigrams in the I Ching, a Chinese classic text.

<span class="mw-page-title-main">History of astrology</span>

Astrological belief in correspondences between celestial observations and terrestrial events have influenced various aspects of human history, including world-views, language and many elements of social culture.

<span class="mw-page-title-main">Astrology and the classical elements</span> Elements in zodiac signs

Astrology has used the concept of classical elements from antiquity up until the present. In Western astrology and Sidereal astrology four elements are used: Fire, Earth, Air, and Water.

<span class="mw-page-title-main">Exaltation (astrology)</span> Form of dignity for a planet

In astrology, exaltation is one of the five essential dignities of a planet. The exaltation is a place of awareness for the planet, whereas the fall is a position of weakness concerning the function of the planet.

<span class="mw-page-title-main">Essential dignity</span> Astrological concept

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 [or] significators."

<span class="mw-page-title-main">Domicile (astrology)</span> Zodiac sign over which a planet rules

In astrology, a planet's domicile is the zodiacal sign over which it has rulership. This is a separate concept from the houses of the horoscope. A planetary ruler is given to each sign, over which the planet is said to have a more powerful influence when positioned therein. The ruling planet associated with a sign is also used as an implied focus of interpretation for the signs on house cusps in a chart. A planet is considered to be in domal dignity when it is positioned in the sign it rules. This is the strongest of the five essential dignities of a planet. Domicile is an archaic term in infrequent, specialist uses today; most astrologers use the simpler term "sign".

In astrology, accidental dignity occurs when a planet gains strength for any reason other than its zodiacal position. Accidental dignity should not be confused with essential dignity which is where a planet gains strength from its position in the zodiac. To understand the difference between accidental dignity and essential dignity, think of essential dignity as being relevant to the 'nature' of the planet and accidental dignity as relevant to how that planet 'finds itself', or its 'power to act'. As an example, in a horary question, the significator for a lost valuable ring may have good essential dignity, but may have little accidental dignity.

In astrology, a triplicity is a group of three signs belonging to the same element.

<i>Tetrabiblos</i> Book by Claudius Ptolemaeus

Tetrabiblos, also known as Apotelesmatiká and in Latin as Quadripartitum, is a text on the philosophy and practice of astrology, written by the Alexandrian scholar Claudius Ptolemy in Koine Greek during the 2nd century AD.

<span class="mw-page-title-main">Decan</span> Groups of stars in Ancient Egyptian astronomy

The decans are 36 groups of stars used in the ancient Egyptian astronomy to conveniently divide the 360 degree ecliptic into 36 parts of 10 degrees each, both for theurgical and heliacal horological purposes. The decans each appeared, geocentrically, to rise consecutively on the horizon throughout each daily Earth rotation. The rising of each decan marked the beginning of a new decanal "hour" of the night for the ancient Egyptians, and they were used as a sidereal star clock beginning by at least the 9th or 10th Dynasty.

In astrology, reception is a condition where one planet is located in a sign where a second planet has astrological dignity--for example, a sign which the second planet rules or in which it is exalted, or where the second planet is the triplicity ruler.

<span class="mw-page-title-main">Hellenistic astrology</span> Ancient Greco-Roman astrology

Hellenistic astrology is a tradition of horoscopic astrology that was developed and practiced in the late Hellenistic period in and around the Mediterranean Basin region, especially in Egypt. The texts and technical terminology of this tradition of astrology were largely written in Greek. The tradition originated sometime around the late 2nd or early 1st century BC, and then was practiced until the 6th or 7th century AD. This type of astrology is commonly referred to as "Hellenistic astrology" because it was developed in the late Hellenistic period, although it continued to be practiced for several centuries after the end of what historians usually classify as the Hellenistic era.

<span class="mw-page-title-main">Stars in astrology</span> Stars in sidereal and tropical astrology

In astrology, certain stars are considered significant. Historically, all of the various heavenly bodies considered by astrologers were considered "stars", whether they were stars, planets, other stellar phenomena like novas and supernovas, or other solar system phenomena like comets and meteors.

<span class="mw-page-title-main">Planets in astrology</span> Interpretations of the planets of the Solar System

In astrology, planets have a meaning different from the astronomical understanding of what a planet is. Before the age of telescopes, the night sky was thought to consist of two similar components: fixed stars, which remained motionless in relation to each other, and moving objects/"wandering stars", which moved relative to the fixed stars over the course of the year(s).

<i>Christian Astrology</i> 1647 book by the English astrologer William Lilly

Christian Astrology, written in 1647 by the English astrologer William Lilly, is considered to be one of the most important seminal works of Western astrology. William Lilly successively treats the rules of western astrology, horary astrology and 'nativities', about erecting and analysing a birth chart in natal astrology. He wrote the book when he was ill and had to stay at home. Running away from the plague in London, he spent a year in the countryside to study, reflect, and write Christian Astrology.

References

Further reading