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Centaurus (constellation)

Centaurus
Constellation
Centaurus
Abbreviation Cen
Genitive Centauri
Pronunciation /sɛnˈtɔːrəs/, genitive /sɛnˈtɔːr/
Symbolism the Centaur
Right ascension 11h 05m 20.9415s–15h 03m 11.1071s
Declination −29.9948788°–−64.6957885°
Family Hercules
Area 1060 sq. deg. (9th)
Main stars 11
Bayer/Flamsteed
stars
69
Stars with planets 15
Stars brighter than 3.00m 10
Stars within 10.00 pc (32.62 ly) 8
Brightest star α Cen (−0.27m)
Nearest star Proxima Centauri (α Cen C)
(4.24 ly, 1.30 pc)
Messier objects 0
Meteor showers Alpha Centaurids
Omicron Centaurids
Theta Centaurids
Bordering
constellations
Antlia
Carina
Circinus
Crux
Hydra
Libra (corner)
Lupus
Musca
Vela
Visible at latitudes between +25° and −90°.
Best visible at 21:00 (9 p.m.) during the month of May.

Centaurus /sɛnˈtɔːrəs/ is a bright constellation in the southern sky. One of the largest constellations, Centaurus was included among the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations. In Greek mythology, Centaurus represents a centaur; a creature that is half human, half horse (another constellation named after a centaur is one from the zodiac: Sagittarius). Notable stars include Alpha Centauri, the nearest star system to the Solar System, its neighbour in the sky Beta Centauri, and V766 Centauri, one of the largest stars yet discovered. The constellation also contains Omega Centauri, the brightest globular cluster as visible from Earth and one of the largest known.

Centaurus contains several very bright stars because of its position in the Milky Way; in addition, its alpha and beta stars are used to find the constellation Crux. The constellation has 281 stars above magnitude 6.5, meaning that they are visible to the unaided eye, the most of any constellation. Alpha Centauri, the closest star system to the Sun, has a high proper motion; it will be a mere half-degree from Beta Centauri in approximately 4000 years.


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