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A constellation of the northern sky, representing a herdsman. It contains Arcturus (Alpha Boötis), the brightest star north of the celestial equator. Epsilon Boötis (Izar or Pulcherrima) is a double star with orange and blue components. The Quadrantid meteor shower radiates every January from northern Boötes.

Subjects: Astronomy and Astrophysics.

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