Astrological Aspects Defined

Planetary Aspects in Astrology

Conjunction, Sextile, Square, Trine, and Opposition

An astrological aspect is the distance, expressed in degrees, between two points in the zodiac. Aspects really only function when they are in signs that are in aspect to one another. Through most of astrological history, people only used the five major aspects (also known as the Ptolemaic astrological aspects). Those aspects are:

Conjunction (0 degrees). Planets are in the same sign. The Moon is at 25 degrees Taurus, and it is conjunct Venus at 25 Taurus.

Meaning of the conjunction: Planets are coming together to accomplish an event, but only the receptions among them tell us whether the result is positive or negative.


Sextile (60 degrees). Planets are two signs apart. Jupiter is at 5 degrees Sagittarius, sextile Saturn at 5 degrees Aquarius.

Meaning of the sextile: Planets are aspecting each other harmoniously, and whatever happens between them, happens with some ease. This can be good or bad – one can easily fall under a truck, or easily find one’s soulmate. The context is everything.


Square (90 degrees). Planets are three signs apart. Moon at 20 degrees Cancer square Mars at 20 degrees Aries.

Meaning of the square: Planets are in difficult and tense aspect, and events will proceed with some difficulty. There will be obstacles and roadblocks.


Trine (120 degrees). Planets are four signs apart. Venus at 23 degrees Libra trine Saturn at 23 degrees Aquarius.

Meaning of the trine: Planets are in a highly harmonious aspect (the trine is more harmonious than the sextile, which is weaker). Events will proceed very smoothly; as with the sextile, this can be positive or negative, depending on the context of the situation.


Opposition (180 degrees). Planets are six signs apart. Sun is at 29 Leo opposite Saturn at 29 Aquarius.

Meaning of the opposition: Planets are in highly disharmonious aspect, and any accomplishment will not be permanent, or at least will be attended by regret.