Aquarius (♒) (Greek: Ύδροχόος, “Hudroksoös”) is the eleventh of the astrological signs in the Zodiac, originating from the constellation Aquarius. In astrology, Aquarius is considered a “masculine”, positive (extrovert) sign. It is also considered an air sign and is one of four fixed signs. Aquarius has been traditionally ruled by the planet Saturn, and, since its discovery, Uranus has been considered a modern ruler of this sign. Being the eleventh sign of the zodiac, Aquarius is associated with the astrological eleventh house.
Individuals born when the Sun was in this sign are considered Aquarius individuals. Under the tropical zodiac, the Sun is in Aquarius roughly from January 20 to February 19.
Zodiac Symbol: Water Carrier
Duration (Tropical, Western): 20 January – 19 February (2011, UTC)
Duration (Sidereal, Hindu): 12 February – 2 March (2011, UTC)
Zodiac Element: Air
Zodiac Quality: Fixed
Domicile: Uranus (day), Saturn (night)
Exaltation: Mercury (modern), Neptune (modern)
Fall: Jupiter (modern)
Aquarius is sometimes identified with Ganymede, a beautiful youth in Greek mythology with whom Zeus fell in love and, in the disguise of an eagle (represented by the constellation Aquila), carried off to Olympus to be “cup-bearer” to the gods. Aquarius has also been identified as the pourer of the waters that flooded the Earth in the ancient Greek version of the Great Flood myth. As such, the constellation Eridanus the river is sometimes identified as a river being poured by Aquarius.
Aquarius may also, together with the constellation Pegasus, be part of the origin of the myth of the Mares of Diomedes, which forms one of The Twelve Labours of Heracles. Its association with pouring out rivers, and the nearby constellation of Capricornus, may be the source of the myth of the Augean stable, which forms another of the labours.
Generally, the natives of Aquarius are considered to be compatible with the natives of the other air signs, Libra and Gemini, and the natives of the fire signs, Aries, Leo and Sagittarius. Taurus and Scorpio are signs of the other nature (feminine/introverted), but are considered semi-compatible with Aquarius due to them having the same fixed quality.
There are many variables that determine compatibility in astrology, such as birth dates, birth months, birth years, position of a sign within the Sun, the Moon, Stars, etc. The signs listed as compatible with Aquarius 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.