Double star

Definition of Double star

(Astron.) two stars so near to each other as to be seen separate only by means of a telescope. Such stars may be only optically near to each other, or may be physically connected so that they revolve round their common center of gravity, and in the latter case are called also binary stars.

See also: Double

Related Words

Aldebaran, Algol, Alpha Centauri, Altair, Antares, Beta Orionis, binary, binary star, Canicula, Dog Star, Epsilon Aurigae, Procyon, Rigel, Rigil, Rigil Kent, Sirius, Sothis, star, Vega
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-Double star-
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double-dealing
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