Alpha Centauri

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  • noun

Synonyms for Alpha Centauri

brightest star in Centaurus

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Henderson obtained for Alpha Cen the value 1.16 +/- 0.11 arcsec.
He found that his method should have detected Alpha Cen Bb.
The spectacular, zero-magnitude double star Alpha Cen AB, and its faint, red-dwarf tag-along Alpha Cen C (Proxima Centauri) 2[degrees] to one side, are so far south at about declination -61[degrees] that they're forever out of sight north of Miami or thereabouts.
The exoplanet whips around its sun in 3.2 days, hugging it at one-tenth the distance Mercury orbits the Sun--nowhere near Alpha Cen B's habitable zone, which lies where Venus's orbit would be.
The Villanova group speculates that Alpha Cen A is undergoing a decrease in stellar magnetic activity, similar to the Maunder Minimum that the Sun experienced from 1645 to 1715.
Viewed with binoculars, Alpha Centauri can be easily split into two near-equal suns--Alpha Cen A and Alpha Cen B.