In classical astrology, a planet is considered to have an orb of influence, much like an aura around itself. There are no fixed opinions as to the size of the orbs around each planet, but typically they range, as in the case of the Sun from 12Â° to 17Â°. The moiety is half this orb and extends an equal distance before the planet and after it. If the moiety of one planet overlaps the moiety of another, by conjunction or Ptolemaic aspect, they are considered to be in aspect. A further qualification is that planets are given moieties and aspects are given zero orbs in themselves.
an anthropology term that literally means 'half'. Moiety describes the belief that all things in the cosmos belong to each of two complimentary social and religious halves (this is not anything like the notions of Yin and Yang or similar dichotomies). All people, clans, ancestral figures, songs (including rhythms and clapstick beat patterns), designs, objects, phenomena, flora and fauna belong to one of each of the two moieties. These are also intermarrying units. In eastern Arnhem Land these moieties are named Dhuwa and Yirritja - in other regions, as per the table below. Eastern Arnhem Land (Yolngu) Dhuwa Yirritja Western + Central Arnhem Land (Bining) Duwa Yirridjdja Central Arnhem Land (Anbarra) Jowanga Yirrichinga SE Arnhem Land (Nunggubuyu) Mandhayung Mandirritja Groote Eylandt (Wanindilyaugwa) East Wind Side (Mamarika) West Wind Side (Barra)