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The ecliptic forms the center of the zodiac, a celestial belt about 20° wide in latitude through which the Sun, Moon, and planets always appear to move. [33] Traditionally, this region is divided into 12 signs of 30° longitude, each of which approximates the Sun's motion in one month. [ 34 ]
Because it is a right-handed system, ecliptic longitude is measured positive eastwards in the fundamental plane (the ecliptic) from 0° to 360°. Because of axial precession , the ecliptic longitude of most "fixed stars" (referred to the equinox of date) increases by about 50.3 arcseconds per year, or 83.8 arcminutes per century, the speed of ...
The term "zodiac" may also refer to the region of the celestial sphere encompassing the paths of the planets corresponding to the band of about 8 arc degrees above and below the ecliptic. The zodiac of a given planet is the band that contains the path of that particular body; e.g., the "zodiac of the Moon" is the band of 5° above and below the ...
The Golden Gate of the Ecliptic is an asterism in the constellation Taurus that has been known for several thousand years. The asterism is formed of the two eye-catching open star clusters , the Pleiades and the Hyades that form the posts of a virtual gate on either side of the ecliptic line.
A recently published (1988) house system, discovered by Georg Goelzer, [46] based on a great circle passing through the ascendant and zenith. This circle is divided into 12 equal parts (1st cusp is ascendant, 10th cusp is zenith), then the resulting points are projected to the ecliptic through meridian circles.
Each of the four elements is associated with three signs of the Zodiac, which are always located exactly 120 degrees away from each other along the ecliptic and said to be in trine with one another. Most modern astrologers use the four classical elements extensively, (also known as triplicities ), and indeed it is still viewed as a critical ...
The year is usually represented by the 12 signs of the zodiac, arranged either as a concentric circle inside the 24-hour dial, or drawn onto a displaced smaller circle, which is a projection of the ecliptic, the path of the Sun and planets through the sky, and the plane of the Earth's orbit.
The North Ecliptic Pole in Draco and the South Ecliptic Pole in Dorado are always at right ascension 18 h and 6 h respectively. The currently used standard epoch is J2000.0, which is January 1, 2000 at 12:00 TT. The prefix "J" indicates that it is a Julian epoch.