- Aquarius (constellation)
name = Aquarius
abbreviation = Aqr
genitive = Aquarii
symbology = the Water-bearer
RA = 23
areatotal = 980
arearank = 10th
numbermainstars = 10, 22
numberbfstars = 97
numberstarsplanets = 5
numberbrightstars = 2
numbernearbystars = 4
brighteststarname = β Aqr (Sadalsuud)
starmagnitude = 2.9
neareststarname = EZ Aqr
stardistance = 11.3
numbermessierobjects = 3
March Aquarids Eta Aquarids Delta Aquarids Iota Aquarids
bordering = Pisces
Capricornus Piscis Austrinus
latmax = 65
latmin = 90
month = October
Aquarius (pron-en|əˈkwɛəriəs, _la.
water-bearer "or" cup-bearer) is the eleventh sign of the zodiac, situated between Capricornusand Pisces. Its symbol is (), Unicode|Unicode ♒.
Aquarius is one of the oldest recognized constellations along the
zodiac, the sun's apparent path. It is found in a region often called the Sea due to its profusion of watery constellations such as Cetus, Pisces, Eridanus, etc. Sometimes, the river Eridanus is depicted spilling from Aquarius' watering pot.
Notable planetary systems
Gliese 876is the first planetary systemfound around the red dwarfstar. The planetary system has three planets, including one terrestrial planet6-8 times the mass of Earth.
91 Aquarii bis a planet found around the orange giantstar. The mass is 2.9 times Jupiterand the semimajor axis of 0.3 AU.
* Gliese 849 b is the first long-period Jupiter-like planet found around the red dwarf star. The semimajor axis is 2.35 AU and has mass of 0.82 Jupiter.
Notable deep sky objects
There are three
deep sky objects that are on the Messier catalog: the globular clusters Messier 2, Messier 72, and the open cluster Messier 73.
planetary nebulae are located in Aquarius: the Saturn Nebula(NGC 7009), to the southwest of η Aquarii; and the famous Helix Nebula(NGC 7293), southwest of δ Aquarii.
The best-known myth identifies Aquarius with Ganymede, a beautiful youth with whom
Zeusfell in love, and whom he (in the disguise of an eagle, represented as the constellation Aquila) carried off to Olympus to be cup bearer to the gods. Crater is sometimes identified as his cup.
Aquarius generally resembles the figure of a man, and when considering fainter humanly visible stars, it takes on the image of a man with a bucket from which is pouring a stream. Aquarius was also identified as the pourer of the waters which flooded the earth in the Great Flood, in the ancient Greek version of the myth. As such, the constellation Eridanus was sometimes identified as being a river poured out by Aquarius.
It 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 Laboursof 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.
astrological signAquarius of the tropical zodiac( January 20/21– February 18/19)ref_label|A|a|none differs from the astronomical constellation and the Hindu astrological sign of the sidereal zodiac ( February 16– March 11).
According to astrology we are now living in the Age of Aquarius. Each Age is 2500 years long, approximately, the Precession of the Equinoxes marking the beginning and end of each Age.
The stars of the constellation Aquarius can be connected in an alternative way, which graphically shows the water bearer running while holding a vessel from which water is spilling.
The water bearer's torso is formed by the stars α Aqr and β Aqr, with β Aqr being of the third magnitude.
The water bearer is holding a vessel, perhaps a jar, which is formed by the stars ψ¹ Aqr, φ Aqr, λ Aqr, τ Aqr, and δ Aqr. The open top of the vessel consists of the triangle of stars ψ¹ Aqr, φ Aqr, and λ Aqr.
Water is being poured from the vessel in a pair of streamlines. The streamline on the left is formed by the stars ψ¹ Aqr, 98 Aqr, 99 Aqr, and 101 Aqr. The streamline on the right is formed by the stars ψ¹ Aqr, 88 Aqr, 89 Aqr, and 86 Aqr.
Note_label|A|a|none a. Depending on the source, the dates are either from January 21 to February 19, or from January 20 to February 18.
* Ian Ridpath and Wil Tirion (2007). "Stars and Planets Guide", Collins, London. ISBN 978-0007251209. Princeton University Press, Princeton. ISBN 978-0691135564.
* H. A. Rey, "The Stars—A New Way To See Them". Enlarged World-Wide Edition. Houghton Mifflin, Boston, 1997. ISBN 0-395-24830-2.
* [http://www.allthesky.com/constellations/aquarius/ The Deep Photographic Guide to the Constellations: Aquarius]
* [http://www.nightskyinfo.com/constellations/aquarius/ NightSkyInfo.com: Constellation Aquarius]
* [http://www.wikisky.org/?object=Aquarius&zoom=2 WIKISKY.ORG: Aquarius constellation]
* [http://www.ianridpath.com/startales/aquarius.htm Star Tales – Aquarius]
Wikimedia Foundation. 2010.