Alpha Boötis B?
Observations by the HIPPARCOS Space Astrometry satellite in the 1990s indicated that Arcturus might have a stellar companion.
(Alpha Boötis) Arcturus is the brightest star in the (the herdsman). It is a red giant (spectral type K1.5IIIp) that is the fourth brightest star in the sky. Arcturus is 34 light-years from Earth. It has an apparent magnitude of -0.
(Alpha Boötis) Arcturus is the brightest star in the constellation Boötes (the herdsman). It is a red giant (spectral type K1.5IIIp) that is the fourth brightest star in the sky. Arcturus is 34 light-years from Earth.
Arcturus (Alpha Boötis or Hokule'a)
Izar (Epsilon Boötis)
Caelum (Caeli) Camelopardalis (Camelopardalis) Cancer (Cancri)
NGC 2812
Canes Venatici (Canum Venaticorum) ...
(ärktr´s), brightest star in the constellation Boötes and 4th-brightest star in the entire sky; Bayer designation Alpha Boötis; 1992 position R.A. 14h15.3m, Dec. +19°13&minut;.
These stars lead to the brightest star in the northern hemisphere, and the fourth brightest in all of the heavens: alpha Boötis, better known as Arcturus. Arcturus means "Guardian of the Bear" .
 See also: Constellation, Arcturus, Star, Sky, Sun
  
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