Astrological sign of a sign are together sufficient to define it, they can be grouped to indicate their symbolism. The first four signs, Aries, Taurus, Gemini and Cancer, form the group of personal signs. The next four signs, Leo, Virgo, Libra and Scorpio form the group of interpersonal signs. The last four signs of the zodiac, Sagittarius, Capricorn, Aquarius and Pisces, form the group of transpersonal signs. Dane Rudhyar presented the tropical zodiac primary factors, used in the curriculum of the RASA School of Astrology. The tropical zodiac is the zodiac of seasonal factors as opposed to the sidereal zodiac (constellation factors).
Dendera zodiac XVIII in the Royal Library (later called the National Library of France). In 1922, the zodiac moved from there to the Louvre. The controversy around the zodiac, called the "Dendera Affair", involved people of the likes of Joseph Fourier (who estimated that the age was 2500 BC). Champollion, among others, believed that it was a religious zodiac. Champollion placed the zodiac in fourth century AD. Georges Cuvier placed the date 123 AD to 147 AD. His discussion of the dating question is an interesting summary of the reasoning as he understood it in the 1820s. Dendera zodiac The sculptured Dendera