Alpha Centauri B

proper noun

The brightest star in the southern constellation of Centaurus. Alpha Centauri is actually a binary star with Proxima Centauri as a third component. Alpha Centauri B is less bright than Alpha Centauri A and is somewhat less bright than our sun.

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Meanings

proper noun

alternative α-Centauri B

  1. astronomyThe brightest star in the southern constellation of Centaurus. Alpha Centauri is actually a binary star with Proxima Centauri as a third component. Alpha Centauri B is less bright than Alpha Centauri A and is somewhat less bright than our sun.
Cite this entry
APA

Alpha Centauri B. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Alpha%20Centauri%20B

MLA

“Alpha Centauri B.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Alpha%20Centauri%20B. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Alpha Centauri B,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Alpha%20Centauri%20B.

Source: Alpha Centauri B on Wiktionary, CC BY-SA 4.0.