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Crux (/ k r ʌ k s /) is a constellation of the southern sky that is centred on four bright stars in a cross-shaped asterism commonly known as the Southern Cross. It lies on the southern end of the Milky Way 's visible band.
The Southern Cross or Crux, a constellation visible in the Southern Hemisphere, is depicted on flags and coats of arms of various countries and sub-national entities. This star constellation is visible mostly in the southern hemisphere and it therefore symbolises the southern location of its users.
The Southern Cross is an asterism by name, but the whole area is now recognised as the constellation Crux. The main stars are Alpha, Beta, Gamma, Delta, and arguably also Epsilon Crucis. Earlier, Crux was deemed an asterism when Bayer created it in Uranometria (1603) from the stars in the hind legs of Centaurus, decreasing the size of Centaur.
Acrux is the brightest star in the southern constellation of Crux. It has the Bayer designation α Crucis , which is Latinised to Alpha Crucis and abbreviated Alpha Cru or α Cru . With a combined visual magnitude of +0.76, it is the 13th-brightest star in the night sky .
The national flag of Australia is based on the British Blue Ensign—a blue field with the Union Jack in the upper hoist quarter—augmented with a large white seven-pointed star (the Commonwealth Star) and a representation of the Southern Cross constellation, made up of five white stars (one small five-pointed star and four, larger, seven ...
The flag of New Zealand (Māori: te haki o Aotearoa), also known as the New Zealand Ensign, [1] is based on the British maritime Blue Ensign – a blue field with the Union Jack in the canton or upper hoist corner – augmented or defaced with four red stars centred within four white stars, representing the Southern Cross constellation.
Delta Crucis or δ Crucis, also identified as Imai (/ ˈ iː m aɪ /), is a star in the southern constellation of Crux, and is the faintest of the four bright stars that form the prominent asterism known as the Southern Cross. This star has an apparent magnitude of 2.8, and its proper name was adopted by the International Astronomical Union on ...
Mimosa, Becrux; binary star or possibly triple star system, 20th brightest of all stars; β Cep variable, V max = +1.23 m, V min = +1.31 m, P = 0.2365072 d Probable high-mass member of Lower Centaurus–Crux subgroup of the Scorpius–Centaurus association.