Optical Binary Stars

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Optical Binary Stars

 

stars that lie on nearly the same line of sight but are quite distant from each other in space. Optical binaries are located next to each other on the celestial sphere and appear to be real binary stars. Unlike binary stars, however, they do not form a physically linked system.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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