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[2920] beta Coronae Borealis, another binary star system, is the second brightest star in the constellation. It is also known as Nusakan, from the Arabic "an-nasaqan," meaning "the (two) series." ...
NUSAKAN (Beta Coronae Borealis). The name of the second brightest star in Corona Borealis, the Northern Crown, has nothing whatever to do with the Crown itself, ...
Both alpha Coronae Borealis and beta Coronae Borealis are spectroscopic binaries, with periods of 17.36 days and 10.5 years respectively.
Gamma CrB is also a spectroscopic binary (period uncertain) as well as a very close visual binary (see below).
 See also: Light Year, Second, Bootes, Star, Magnitude
  
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