Definition of Barnard's Star
astronomy
: a red dwarf star of the ninth magnitude that is located approximately six light years away in the constellation of Ophiuchus Such is the case with Barnard's Star. It is the fourth closest star to Earth at only 36 trillion miles away, yet you'll need a telescope to see it. — Tom Burns, Columbus (Ohio) Dispatch, 16 July 1995 ◆Barnard's Star is notable because it is one of the closest stars to the Sun. Only the Alpha Centauri system is closer.
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Origin and Etymology of barnard's star
after Edward Emerson Barnard †1923 American astronomer ◆Barnard drew attention to the star, previously recorded on photographic plates, because of its unusually large proper motion; see “A Small Star with Large Proper Motion,” Popular Astronomy, vol. 24 (1916), pp. 504-08 (article dated by the author July 25, 1916).
First Known Use: 1916
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