Astrology Dictionary - O

Astrology Dictionary - O


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Age of Aquarius • Air • Angles • Aquarius • Archetype • Aries • Arrowhead • Ascendant • Aspect • Aspect Configuration

Birth Chart • Boomerang

Cancer • Capricorn • Cardinal • Cazimi • Centaurs • Chart • Chiron • Collection of Light • Collective • Collective Unconscious • Combust • Conjunction, Conjuct, Conjoin • Contra-Parallel • Cradle configuration • Cusp

Declination • Descendant • Direct • Dispositor • Dissociate Aspect

Earth (element) • Earth (planet) • Eclipse • Ecliptic • Element • Equinox

Final Dispositor • Fire • Fixed • Full Moon

Gemini • God's Fist • Grand Cross • Grand Sextile • Grand Square • Grand Trine

Hard Wedge • Houses • Houses (meanings)

IC, Imum Coeli • Inconjunct • Intercepted Planet • Intercepted Sign


Kite • Grand Trine Kite • Yod Kite

Leo • Libra • Lights, Luminaries • Lunar Eclipse • Lunar Nodes

Major Aspects • Mars • MC, Medium Coeli • Mercury • Mercury Retrograde • Midheaven • Modalities • Moon • Moon's Nodes • Multiple Conjunction • Mutable • Mutual Reception • Mystic Rectangle

Nadir • Natal Chart • Neptune • New Moon • North Node

Octile • Opposition • Orb • Out of Bounds • Out of Sign Aspect

Parallel • Part of Fortune, Pars Fortuna • Pisces • Planet • Pluto • Points • Precessed Solar Return • Precession of the Equinoxes • Progressions • Ptolemaic Aspects

Quadriform • Quincunx

Retrograde • Rising Sign • Rolling Conjunction • Rosetta • Ruler • Rulerships

Sabian Symbols • Sagittarius • Saturn • Scorpio • Semi-Sextile • Semi-Square • Sesqui-Quadrate • Sesqui-Square • Sextile • Shadow (planetary) • Shadow (psychological)
• Sidereal Zodiac • Sign • Solar Eclipse • Solar Return • Solstice • South Node • Square • Station(ary) • Stellium • Sun

Taurus • Thor's Hammer • Traditional Rulerships • Transits • Transpersonal Planets • Trapeze • Trine • Tri-Octile • Tropical Zodiac • T-Square, T-Cross


Venus • Virgo

Water • Waxing, Waning • Wedge


Zenith • Zodiac



An aspect between two planets that are 45 degrees apart (give or take a few degrees; see Orb). This aspect is derived by dividing the circle into 8 equal segments. Geometrically, an Octile aspect (also known as a Semi-Square) is half of a Square aspect (which is 90 degrees).

Similar to the Square, the Octile represents a stressful yet dynamic relationship between the aspected planets. When used constructively, there is motivation for moving forward and/or shedding outworn situations that hinder forward progress. When the energy becomes stuck or uncontrolled, there can be a compulsive, obsessive or stubborn edge to it.

In transits, this aspect can indicate decisions and choices that need to be made, creating a turning point in a situation. Will you proceed to the next step, or will you change course while you can still do so easily? Are you ready to do closure on a process that has run its course, or do you want to recycle it and take the situation to a new level?

Compare: Tri-Octile, Square. Top of Page

Octile, Semi-Square aspect - 45 degrees

Octile or Semi-Square Aspect Symbol


An aspect between two planets that are 180 degrees apart (give or take a few degrees; see Orb). A stressful, polarising energy that can also motivate and provide a complementary balancing of planetary energies.

The two planets can get caught in a "tug of war" where they fight for dominance. When they work well together, they complement and balance each other out, each contributing benefits that the other lacks. Projection of one side often occurs, when the person takes a position in one planet's energy, and then they see the opposite planet's energy in other people and situations. The more we learn to embrace both planets within ourselves, the more those energies will balance rather than fight each other. Top of Page

Opposition aspect - 180 degrees

Opposition Aspect Symbol


A kind of "fudge factor" that approximates the region where two planets are in a particular geometric aspect to each other. For example, two planets are said to be in Trine aspect when they are 120 degrees apart, give or take a certain "orb." Some astrologers prefer to use tight or narrow orbs (e.g., within 2-5 degrees) and others prefer to use wide orbs (e.g., within 6-9 degrees). The number of degrees of orb used also tends to vary with the aspect in question; for example, a wider orb is usually used for a major aspect (e.g., Conjunction) than for a minor aspect (e.g., Quintile). Top of Page  

Out of Bounds


For a planet to be Out of Bounds refers to declination, or how far above or below Earth's equator the planet appears to travel. Throughout the year, the Sun "moves" back and forth above and below the equator (that is, it looks that way from our perspective due to the tilt of the Earth's axis). There is a limit to how far north or south the Sun can "move," forming a kind of band around the middle of the Earth. That band extends up to 2326' north and south of the equator. The Sun reaches the maximum north or south declination at the solstices.
Out of Bounds in Declination

Most of the time, the other planets (and the Moon and the Lunar Nodes) can also be found within that band of declination. However, occasionally some of them will stray farther north or south. We call this being "out of bounds" (OOB). It indicates that the planet's energy is operating at a different frequency, so to speak. It could be a bit more erratic or unpredictable. It might behave in a way that's beyond our personal control. It could reach toward some higher purpose, or at least be motivated by impulses, desires and rationale that extends beyond the conventional norms.

When I think of a planet being out of bounds, I think of a breathtaking scene in the movie The Right Stuff when the fearless test pilot Chuck Yeager pushes the Lockheed Starfighter jet to its limit by flying it as high as it can go. As you can see in this video clip, just after 4:30, (warning: intense and a bit graphic) there is a moment where he flies so high that he breaks out of the earthbound realm of the daylight sky and suddenly the stars become visible! In the same way, OOB seem to connect with a level of energy that is "out of this world," not entirely within your control and not easily brought back to manifest in the earthly realm.

Some planets go out of bounds regularly and often, whereas others never go out of bounds (but stay within the Sun's range of declination). Below are two tables showing how much of the time each planet is OOB, and how far north and south of the equator each planet can go. (Calculations were made using Solar Fire 7.0.10 for the years 1900-2020, except for Pluto which uses 1750-1998 to include its full orbit.)

Planet How often OOB?
Mars 17%
Moon 15%
Mercury 13%
Venus 12%
Pluto 10%
Uranus 8%
Jupiter 1%
Lunar Node,
Planet Maximum North-South
Moon 28.72 N
28.72 S
Venus 27.82 N
27.85 S
Mars 27.22 N
28.88 S
Mercury 25.65 N
25.85 S
Pluto 24.10 N
24.72 S
Uranus 23.70 N
23.70 S
Jupiter 23.52 N
23.52 S
Sun 23.45 N
23.45 S
Lunar Node 23.45 N
23.43 S
Saturn 22.83 N
22.82 S
Neptune 22.38 N
22.35 S
Chiron 18.18 N
18.28 S

See also: Declination, Solstice, Equinox Top of Page


Out of Sign Aspect

A type of aspect. Also known as a Dissociate Aspect. Top of Page  

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