In the equal house system the ecliptic is also divided into twelve divisions of 30 degrees, although the houses are measured out in 30 degree increments starting from the degree of the ascendant. It begins with the ascendant, which acts as the 'cusp' or starting point of the 1st house, then the second house begins exactly 30 degrees later in zodiacal order, then the third house begins exactly 30 degrees later in zodiacal order from the 2nd house, and so on.
In this type of system, the definition of houses involves the division of the sphere into twelve equal lunes perpendicular to a fundamental plane the Morinus and Regiomontanus systems being two notable exceptions. This system is constructed in a similar manner as the Equal house, but houses are measured out in 30 degree increments starting from the longitude of the midheaven , which acts as the 'cusp' or starting point of the 10th house.
The ascendant does not coincide with the cusp for the 1st house. Each quadrant of the ecliptic is divided into three equal parts between the four angles. This is the oldest system of quadrant style house division. Although it is attributed to Porphyry of Tyros , this system was first described by the 2nd-century astrologer Vettius Valens , in the 3rd book of his astrological compendium known as The Anthology. This house system was described by the English astrologer Charles E.
Carter in his Essays on the Foundations of Astrology. Those cusps are then restated in terms of celestial longitude by projecting them along great circles containing the North and South celestial poles. The 1st house cusp coincides with the ascendant's longitude, but the 10th house cusp is not identical with the Midheaven. The intersections of the ecliptic with those great circles provide the house cusps.
The 10th house cusp thus equals the Midheaven, but the East Point also known as Equatorial Ascendant is now the first house's cusp.
Each house is exactly 2 sidereal hours long. French mathematician Jean Baptiste Morinus. The celestial equator is divided into twelve, and these divisions are projected on to the ecliptic along great circles that take in the north and south points on the horizon. The Regiomontanus system was later largely replaced by the Placidus system. The prime vertical the great circle taking in the zenith and east point on the horizon is divided into twelve, and these divisions are projected on to the ecliptic along great circles that take in the north and south points on the horizon.
It is attributed to Campanus of Novara but the method is known to have been used before his time. Sinusoidal systems of house division are similar to Porphyry houses except that instead of each quadrant being divided into three equal sized houses, the middle house in each quadrant is compressed or expanded based on whether the quadrant covers less than or greater than 90 degrees.
In other words, houses are smooth around the zodiac with the difference or ratio in quadrant sizes being spread in a continuous sinusoidal manner from expanded to compressed houses. Sinusoidal houses were invented and first published by Walter Pullen in his astrology program Astrolog in A recently published house system, discovered by Georg Goelzer,  based on a great circle passing through the ascendant and zenith.compnetctigethra.tk
Daily horoscope for Monday December 17 — here’s what the stars have in store for you today
This circle is divided into 12 equal parts 1st cusp is ascendent, 10th cusp is zenith , then the resulting points are projected to the ecliptic through meridian circles. The house tables for this system were published in in Poland. The predecessor system to the Placidus, which largely replaced the Porphyry. The difference with Placidus is that the time that it takes the ascendant to reach the meridian is divided equally into three parts. The Alchabitius house system was very popular in Europe before the introduction of the Regiomontanus system.
This is the most commonly used house system in modern Western astrology. The paths drawn for each degree of the ecliptic to move from the Imum coeli to the horizon, and from the horizon to the midheaven, are trisected to determine the cusps of houses 2, 3, 11, and The cusps of houses 8, 9, 5 and 6 are opposite these.
This result is a weakness of the Placidean system according to its critics, who often cite the exceptional house proportions in the higher latitudes. Named for 17th-century astrologer Placidus de Titis , it is thought the Placidus system was first mentioned about 13th century in Arab literature, but the first confirmed publication was in by Giovanni Antonio Magini — in his book "Tabulae Primi Mobilis, quas Directionem Vulgo Dicunt".
The first documented usage is from Czech, Placidus, a professor of mathematics, was named as its author to give it credibility to his contemporaries. Placidus remains the most popular system among English-speaking astrologers [ citation needed ]. A rather more complicated version of the Placidus system, built on equal increments of Right Ascension for each quadrant. This system is popular among research astrologers in the U. This is a recent system, invented in Argentina, that its creators claim has been determined empirically, i.
The house cusps are always within a degree of those given in the Placidus system. The topocentric system can also be described as an approximation algorithm for the Placidus system. Topocentric houses are also called Polich-Page, after the names of the house system creators, Wendel Polich and A. Page Nelson. The following charts display different house systems for the same time and location. To better compare systems subject to distortion, a high latitude city was chosen Stockholm, Sweden and the time corresponds to a long ascension sign Cancer. For clarity purposes, all the usual aspect lines, degrees and glyphs were removed.
In the whole sign and equal house systems the Medium Coeli Midheaven , the highest point in the chart, does not act as the cusp or starting point of the 10th house. Instead the MC moves around the top half of the chart, and can land anywhere in the 7th, 8th, 9th, 10th, 11th, 12th, depending on the latitude. The MC retains its commonly agreed significations, but it doesn't act as the starting point of the 10th house, therefore in Equal house it adds extra definition and meaning to MC and the cusps involved, but always MC is same in interpretations as other house systems. This is also the more common criticism of the whole sign and equal house method as it concerns the location of the Medium Coeli Midheaven , the highest point in the chart.
As a result, equal houses counted from the ascendant cannot in general place the midheaven on the tenth house cusp, where many feel it would be symbolically desirable. Since this point is associated with ambition, career, and public image, the argument is that the Midheaven, therefore, must be the cusp of the similar tenth house.
It has also been linked by extension with Capricorn the tenth sign of the zodiac. Equal house system always takes MC to be first and foremost THE most important indicator of career, but 10th house cusp is simple like a weaker 2nd MC cusp and would be taken into account, but not at the expense of MC. Because the Whole Sign and Equal House system do take the Midheaven into account, but relies on the location of the Ascendant, it can be found anywhere between the 8th and 11th houses. In Hellenistic, Vedic , Medieval and Renaissance astrology each house is ruled by the planet that rules the sign on its cusp.
For example, if a person has the sign Aries on the cusp of their 7th house, the planet Mars is said to "rule" the 7th house. This means that when a planet is allotted a house, the planet's attributes will have some bearing on the topics related to that house within the life of the individual whose chart is being analyzed. This planet is considered very important for events specifically pertaining to that house's topics; in fact, its placement in the chart will have at least as much influence on the chart as the planets placed within the house.
For instance, Mars is ruler of the 1st house because it rules Aries, the first sign; Mercury rules or has an affinity with the 3rd house because it rules Gemini, the 3rd sign; etc. This concept is sometimes referred to as "natural rulership," as opposed to the former which is known as "accidental rulership. From Wikipedia, the free encyclopedia. This article has multiple issues. Please help improve it or discuss these issues on the talk page. Learn how and when to remove these template messages.
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Statements consisting only of original research should be removed. This section needs additional citations for verification. This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Whitefish, MT: Kessinger Publishing. This article incorporates text from this source, which is in the public domain. Retrieved 4 August Astrology Booth. Retrieved The eastern origins of the Campanus Prime Vertical method.
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