Capella

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Capella,

brightest star in the constellation AurigaAuriga
[Lat.,=the charioteer or wagoner], northern constellation traditionally represented as a man, possibly Vulcan, carrying a goat on his shoulder while driving a chariot. It lies E of Perseus and N of Gemini and Taurus.
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; Bayer designation α Aurigae; 1992 position R.A. 5h16.1m, Dec. +45°59'. Capella is a yellow giant star of spectral classspectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
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 G8 III and is also a spectroscopic binary starbinary star
or binary system,
pair of stars that are held together by their mutual gravitational attraction and revolve about their common center of mass. In 1650 Riccioli made the first binary system discovery, that of the middle star in the Big Dipper's handle, Zeta
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 with a component of spectral class F. Its apparent magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
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 of 0.06 makes it the 6th-brightest star in the sky. Capella is about 45 light-years from the earth. Its name is from the Latin for "little she-goat."

Capella

(kă-pell -ă) (α Aur) A conspicuous yellow giant that is the brightest star in the constellation Auriga. It is a visual binary (period 104 days), of which the components can only be resolved in the largest telescopes. The star has a high lithium content. mv : 0.08; Mv : –0.4; spectral type: G6 III, G2 III; distance: 12.5 pc.

Capella

[kə′pel·ə]
(astronomy)
A star that is 45 light-years from the sun; spectral classification G0IIIp. Also known as α Aurigae.