Aquarius is a Zodiacal constellation otherwise known as the Water Bearer. It is one of the 48 Greek constellations originally described by the 2nd century astronomer Claudius Ptolemy (Wikipedia). Aquarius remains one of the 88 modern constellations defined by the International Astronomical Union (Wikipedia).

Aquarius (abbrev. = Aqr; genitive = Aquarii) covers 980 square degrees or 2.38% of the celestial sphere making it the 10th largest constellation. It contains 172 stars brighter than apparent magnitude 6.5, the brightest star being Sadalsud. See the Aquarius Star Chart for a figure illustrating this constellation including the identification of its brighter stars.

For more information see the entries for Aquarius at Wikipedia and U. Wisconsin. For a chart of Aquarius, see Aqr (IAU).

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