Astrological hint: what does the palace separation system mean?

This issue of constellation knowledge brings you the knowledge about the palace system, which determines the distribution of the zodiac in the later star chart and has always been the most controversial part in western astrology. Astrologers calculate the ecliptic in different ways, so they have different systems of dividing the palace. The palace division system determines the size of the area occupied by each palace, which sometimes has a great influence on accurate calculation.

What do you mean by separate palaces? The palace division system developed in the15th century, and has reached more than 50 kinds after years of research, among which 6 kinds are common, including Placidus, Koch, Regionmontanus, Campanus, Topocentric and Equal.

Placidus was founded by Italian monk Placidus-de-Titus in17th century, and it is quite popular in low latitudes. Koch prevailed in Germany and was invented by Dr-Walter-Koch (1895-1970). Kan Panouse's calculation method is close to the principle of stereoscopic projection, which was advocated by Joseph and Matthew Kan Panouse in the15th century. The disadvantage of this system is that in high latitudes, the horoscope will be distorted so much that it can't be calculated.

Reggiomontanus was invented by the German astronomer Reggiomontanus in the15th century, and the calculation result in equatorial region is the same as that in Panouse. Topological center is not a palace division system derived from mathematical methods, but is calculated by Argentine astrologers Andrew-Polich and Anthony-Nelson-Page according to empirical statistics. The palace allocation calculated by Topocentric is quite close to Pacidus in many cases, but the calculation method is quite different from Pacidus. Equal palace system, starting from the east, divide the obtained 12 palace into 12 equal parts. Equality is a method used in ancient astrology. It is said that in Ptolemy era (A.D. 1 century), classical Greek astrologers used the flat palace system.

Generally speaking, astrologers will use Placidos, and Germany will use Koch. Fashion doesn't mean it's the best. What kind of palace division system is best? Everyone has his own preferences, and there is no uniform standard.

Why are there so many separate palaces? First of all, we must understand the principle of intrauterine separation. The calculation method of palace division system is to calculate the ascending intersection point and MC-Medium-Coeli according to the latitude and longitude of birth time and place. Dongsheng point is the point where the horizon intersects with the ecliptic in the east of the birthplace at the moment of birth. Compared with the Dongsheng point, the intersection of the western horizon and the ecliptic is Dsc (Dscendant).

These two points are connected to represent the horizon of birth. Above the horizon are the stars visible in the daytime, and below the horizon are the stars visible at night. Zenith is the highest point of the ecliptic in the celestial sphere at that time; Relative to the zenith, the lowest point of the ecliptic in the celestial sphere is ic (Imum-Coeli).

After calculating the Dongsheng point, the celestial sphere at that time was divided into 12 parts according to the position of the Dongsheng point, and projected onto the ecliptic by projection method or other mathematical calculation methods, that is, the distribution of 12 houses on the altimeter. The difference of palace division system lies in the different concepts and calculation methods of Houtiangong, but they are all located at Dongsheng point and zenith, so no matter which palace division system is used, Dongsheng point and zenith will not change.

It is difficult to evaluate which palace division system is the most correct. No one has done research to distinguish clearly. Most astrologers imitate and adopt Pacidus or Koch. Some astrologers pursue the spirit of originality and carry forward the ancient Greek astrological tradition of using the equal sign. Some people adopt different palace separation systems according to different needs.

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