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[5362]-[5364] epsilon Lyrae, also known as The Double Double, is a quadruple star system, with two binary stars orbiting each other. Epsilon Lyrae is about 162 light-years distant from Earth. It can be spotted with the naked eye.
4 seconds, the set reminding us strongly of the famed "Double- Double in Lyra," Epsilon Lyrae. The closeness of them has made measurements of the individuals difficult. The eastern pair is the brighter, and consists of "Nu Sco A and B.
6 arcseconds, and twice that diameter is the 13 arcseconds commonly quoted in his scale. However in my 12" telescope, the same diameter is only 2.75", slightly greater than the component separation in either of the epsilon Lyrae binaries.
 See also: Epsilon, Magnitude, Star, Temperature, Light
  
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