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A Glossary of Astrological Terms for the letter "O"
- table below to go
straight to that sector.
O
- Obliquity
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- Occidental & Oriental
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- To be "oriental in the figure" means being near the Ascendant, best suited to the Sun; to be "occidental in the figure" means being near the Descendant, best suited to the Moon.
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- Occult
- Occult Knowledge
- Occultation
- Octile
- 1/8 of the 360°
circumference of the circle of the zodiac. More widely known as a semi-square.
- Old Aspects
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- Ophiuchus
- Serpentarius) was one of the 48 constellations listed by Ptolemy, but even though it lay on the ecliptic, was never considered a Sign of the
Zodiac. The zodiacal Signs are particular divisions of the circle of the ecliptic into 12 equal parts of 30° each, based on the seasonal changes marked by the Equinoxes and the Solstices. Despite their names, the positions of the stellar constellations nowadays have no direct connection with the Signs, at least not in Western Tropical Astrology (compare Sidereal
Zodiac).
- Opposition
- orb of
6°–8°, but the closer the orb is to being exact (partile), the more powerful the effect. The Sun and Moon are often allowed more orb. Classical astrology allows for signs to be in aspect, so any planet in Aries would be considered opposed to any planet in Libra for example, as these signs are diametrically opposed in the zodiac. This called a
platic aspect, as opposed to partile. More on Aspects, and Planets.
- Orb
- Moiety.
- Orbit
- Oriental
- Oriental Appearance
- Out-of-Sign
- Outer Planets
- [NOTE: Distant bodies in our solar system such as Chiron are not usually classed as Outer Planets, or even true planets (Chiron now seems more like a comet). Pluto has even recently been demoted by the IAU to the status of a "dwarf
planet", but this does not diminish his astrological value. Other bodies such as Eris, a recently-discovered "dwarf planet" in the Kuiper Belt, are known to exist by science, but as yet have no accepted astrological significance.]
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