The space on the chart wheel measured in degrees, between planets and points, by which an aspect may vary from exactness and still remain effective. For example, a conjunction between a planet at 29 degrees Leo and 1 degree Virgo is within a 2 degree orb but not the same Sign. This weakens the aspect. As used in Astrology, this refers to the Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
Earth is excluded, as it is our point of reference.
In general, it is a major body which revolves around a Sun in a periodic orbit. Rules transformation, regeneration, rebirth, destruction, annihilation, power and elimination. It also represents atomic power, intensity, crime, death and the underworld. A method of advancing the planets and points of a natal chart to a particular time after birth. Used to illustrate one's evolution.