Algol, Beta Persei, is a bright multiple star located in Perseus. It is the second brightest star in the constellation, after Mirfak, Alpha Persei. The star is also known as Gorgona, Gorgonea Prima, Demon Star and El Ghoul. It lies at an approximate distance of 90 light years from Earth and has an apparent magnitude that varies between 2.12 and 3.4.
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The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. Also known as h Persei and χ Persei (h and Chi Persei), the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old.
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The Winter Hexagon, also known as the Winter Circle, is a prominent winter asterism formed by seven stars prominent in the winter sky.
The Hyades are a star cluster located in Taurus constellation and the nearest open cluster of stars to the solar system. Also catalogued as Collinder 50 or Melotte 25, the cluster has an apparent magnitude of 0.5 and lies at a distance of 153 light years, or 47 parsecs, from Earth.
The brightest stars in the Hyades cluster form a V shape that marks the head of the celestial bull. The cluster lies along the same line of sight as Aldebaran, the brightest star in Taurus, but the bright giant is not a member of the cluster and lies much closer to Earth.
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