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Spica
Spica , brightest star in the constellation Virgo ; Bayer designation Alpha Virginis; 1992 position R.A. 13 h 24.8 m , Dec. -11°07′. A bluish-white star of spectral class B1 V, its apparent magnitude averages about 0.96, making it one of the 20 brightest stars in the sky. Because it is an eclipsing binary star , the magnitude ranges from 0.91 to 1.01 as the two components orbit about each other within a four-day period. Spica is at a distance of about 200 light-years. Its name is Latin for "ear of grain," referring to an ear of grain held by the figure traditionally associated with the constellation Virgo. |
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"Spica." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "Spica." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-Spica.html "Spica." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Spica.html |
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Spica
Spica The star Alpha Virginis, magnitude 1.0. It is a spectroscopic binary consisting of a pair of B-type stars elongated by gravity so that the received light varies every 4 days as the pair orbit each other, although the amplitude is less than 0.1 mag. In addition, the primary is a variable of the Beta Cephei class, with a period of 0.17 days. Spica lies 262 l.y. away.
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"Spica." A Dictionary of Astronomy. 1997. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "Spica." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O80-Spica.html "Spica." A Dictionary of Astronomy. 1997. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-Spica.html |
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spica
spica (spy-kă) n. a bandage wound repeatedly in a figure-of-eight around an injured limb, forming a series of V-shapes. See illustration.
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"spica." A Dictionary of Nursing. 2008. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "spica." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O62-spica.html "spica." A Dictionary of Nursing. 2008. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-spica.html |
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