Libra (♎) is the seventh of the astrological signs in the Zodiac, originating from the constellation of Libra. In astrology, Libra is considered a “masculine”, positive (extrovert) sign. It is also considered an air sign and is one of four cardinal signs. Libra is ruled by the planet Venus (which also rules Taurus). Being the seventh sign of the zodiac, Libra has been associated with the astrological seventh house.
Individuals born when the Sun was in this sign are considered Libra individuals. Under the tropical zodiac, the Sun enters Libra on the moment of autumnal equinox by definition on September 23, leaving it on October 22. Under the sidereal zodiac, it is currently there roughly around October 19 and November 16. In western astrology, this sign is no longer aligned with the constellation as a result of the precession of the equinoxes.
Zodiac Symbol: The Scales
Duration (Tropical, Western): 23 September – 23 October (2011, UTC)
Duration (Sidereal, Hindu): 14 October – 31 November (2011, UTC)
Zodiac Element: Air
Zodiac Quality: Cardinal
Detriment: Mars, Pluto (modern)
The symbol for Libra is the Scales. In Roman mythology, Libra is considered to depict the scales held by Astraea (identified as Virgo), the goddess of justice. Libra is also considered the goddess of balance and truth. She also corresponds with Egyptian mythology as Ma’at, the goddess of the scales or balance.
Generally, the natives of Libra are considered to be compatible with the natives of the other air signs, Aquarius and Gemini, and the natives of the fire signs, Aries, Leo and Sagittarius. Cancer and Capricorn are signs of the other nature (feminine/introverted), but are considered semi-compatible with Libra due to them having the same cardinal quality.
There are many variables that determine compatibility in astrology, such as birth dates, birth months, birth years, position of a sign within the Moon, Stars, etc. The signs listed as compatible with Libra do not reflect an individual profile or individual reading as interpreted within astrology, but rather reflect a general guideline and reference to compatibility as dictated by variables such as Qualities and Elements within the Zodiac. The branch of astrology dealing with interpersonal compatibilities is called Synastry.
Definition courtesy Wikipedia.