Proxima Centauri

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Proxima Centauri:

see Alpha CentauriAlpha Centauri
, brightest star in the constellation Centaurus and 3d-brightest star in the sky; also known as Rigil Kent or Rigil Kentaurus; 1992 position R.A. 14h39.1m, Dec. −60°49'. Its apparent magnitude is −0.26.
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Proxima Centauri

(proks -ă-mă sen-tor -ÿ, -ee) (V645 Cen) The nearest known star to the Sun. It is a flare star located in the constellation Centaurus and is a component of the Alpha Centauri system, about 2°.2 from α Cen. Although very faint, it is an intense source of low-energy X-rays and high-energy ultraviolet – i.e. XUV wavelengths. mv : 11.05 (var.); Mv : 15.5; spectral type: M5.5 Ve; mass: 0.1 times solar mass; distance: 1.29 pc. (4.2 l.y.).
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Proxima Centauri

 

the star closest to our solar system; located 1.31 parsecs away, in the constellation Centaurus. Proxima Centauri is an eruptive variable star with a visual magnitude of 11. Together with the bright star α Centauri, which is located 0.02 parsec farther away, it constitutes a binary system.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

Proxima Centauri

[′präk·sə·mə sen′tȯr·ē]
(astronomy)
The star that is the sun's nearest neighbor; stellar magnitude is ll, and it is 2° from the bright star α Centauri.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.