Barnard's Star Definition

bärnərdz

noun

A red dwarf star in the constellation Ophiuchus that, at a distance of 5.96 light years, is the fifth nearest star to Earth after the sun and the three stars in the Alpha Centauri system. Barnard's star has the largest proper motion yet observed for a star, 10.3 arcseconds per year.

American Heritage

pronoun

A very low-mass red dwarf star about six light-years away from Earth, in the constellation of Ophiuchus.

Wiktionary

Origin of Barnard's Star

After Edward Emerson Barnard (1857–1923), American astronomer who discovered it

From American Heritage Dictionary of the English Language, 5th Edition
Named for American astronomer E. E. Barnard, who measured its proper motion in 1916.

From Wiktionary