Precession of the Equinoxes

Astrological Dictionary

The Vernal Equinox or First point of Aries is an important reference point in Astronomy and Astrology as it indicates the start of a Seasonal Year, when the Sun is at the intersection of Equator and Ecliptic. Due to Precession, the constellation, which forms a background to the Solar system, is changed from year to year by an amount of approx. 52 seconds of arc. This is caused by the Earth's tilt of 23?27' to the plane of the Ecliptic and other perturbations in its rotation causing the Earth to "wobble on it's axis". Astrologically, we still refer to the Vernal Equinox as the Aries Ingress or First Point of Aries as the moment when the cycle of the Zodiac begins. At present, the Constellation of Pisces is in the background and the Vernal Equinox point is located in that constellation. Precession occurs 'backwards' through the signs, so the Vernal Equinox will eventually be against the background of the constellation Aquarius.

 
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