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Arrakis
Mu Draconis, 21 Draconis
Proper Name
  Arrakis
Bayer Designation
  Mu Draconis
Flamsteed Number
  21 Draconis
BSC
  6370
HD
  154905
Constellation
  Draco
Right Ascension
  17h 05m 20s
Declination
  +54° 28' 12"
Distance
  88 light years
  27 parsecs
Magnitude
  Apparent: +4.9
  Absolute: +2.8
Spectral Class
  F7
  Bright Yellow Dwarf
Optimum Visibility
  May/June
The name Arrakis comes from Arabic, and means 'The Dancer'. This is indeed an appropriate name for a three-star system, where the two major components are almost identical stars rotating around their common centre of gravity. A third, fainter, star pursues a more distant orbit around these two.

Image of Arrakis
The view from a hypothetical planet in the Arrakis system. Bright in the sky are the twin stars that make up the core of the system. The third and more distant component, Arrakis C, shines like a 'morning star'.
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