Although the concept of a planetary orb is widely used, there is no generally agreed upon standard for orbs, and thus a lot of variation exists in the tradition when it comes to specifying the exact number of degrees that should be involved. Sources Sakoian, Frances and Louis S. Acker.Pre...
, Orb, in astrology. An orb of light is a certain sphere or extent of light, which the astrologers allow a planet beyond its centre... The orb of Saturn's light they make to be 10 degrees; that of Jupiter 12°,..that of the Sun 17°,..that of the Moon 12° 30′.1819J. ...
Astrology.the number of degrees from exactness within which an aspect operates. a circle or something circular. Astronomy.(formerly) the orbit of a heavenly body. the earth. verb (used with object) to form into a circle or sphere.