Astronomy: Stars

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Acrux

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Acrux [from the Bayer designation α Crucis], brightest star in the constellation Crux (Southern Cross); 1992 position R.A. 12 ^h 26.2 ^m , Dec. -63°04′. Its apparent magnitude of 0.86 makes it one of the 20 brightest stars in the sky, although its location in the far southern sky prevents it from being seen by most observers in the United States. Acrux is a visual binary star , with components of spectral classes B1 and B3, each component itself being a spectroscopic binary. Its distance is about 370 light-years.

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Alpha Crucis

A Dictionary of Astronomy | 1997 | Copyright

Alpha Crucis The brightest star in the constellation Crux, also called Acrux. It is a double star consisting of a B0.5 subgiant, magnitude 1.3, and a B1 dwarf, magnitude 1.7. To the naked eye they appear as a single star of magnitude 0.8. Alpha Crucis is 321 l.y. distant.

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Alpha Crucis

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Alpha Crucis : see Acrux .

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Acrux

A Dictionary of Astronomy | 1997 | Copyright

Acrux See Alpha Crucis.

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"Acrux." A Dictionary of Astronomy. 1997. Encyclopedia.com. 25 May. 2012 <http://www.encyclopedia.com>.

"Acrux." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 25, 2012). http://www.encyclopedia.com/doc/1O80-Acrux.html

"Acrux." A Dictionary of Astronomy. 1997. Retrieved May 25, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-Acrux.html

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