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Reference.org
VB 10
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<p>VB 10 or Van Biesbroeck's star /vænˈbiːzbrʊk/ is a small and dim <a href="/facts/Red_dwarf/56CMQcF0">red dwarf</a> located in the <a href="/facts/Constellation/nBQqgW8A">constellation</a> <a href="/facts/Aquila_(constellation)/p90KeceQ">Aquila</a>. It is part of a <a href="/facts/Binary_star/TYlDe1bD">binary star</a> system. VB 10 is historically notable as it was the least luminous and least massive known star from its discovery in 1944, until 1982 when <a href="/facts/LHS_2924/Lbxx4AFV">LHS 2924</a> was shown to be less luminous. Although it is relatively close to Earth, at about 19 light years, VB 10 is a dim <a href="/facts/Apparent_magnitude/7pCTF1Me">magnitude</a> 17, making it difficult to image with amateur telescopes as it can get lost in the glare of the primary star. VB 10 is also the primary standard for the M8V spectral class. </p>