| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Pollux, in astronomy |
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| brightest star in the constellation Gemini; Bayer designation Beta Geminorum; 1992 position R.A. 7h44.8m, Dec. +28°03´. An orange giant of spectral class K0 III, it is the nearest giant star, lying at a distance of 35 light-years. Its apparent magnitude of 1.13 makes it one of the 20 brightest stars in the sky. Pollux is the brighter of the Twins, Castor appearing about half as bright. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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