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Anwar al Farkadain

Eta Ursae Minoris, 21 Ursae Minoris

Proper NameAnwar al Farkadain
Bayer DesignationEta Ursae Minoris
Flamsteed Number21 Ursae Minoris
HR (BSC)6116
HD148048
ConstellationUrsa Minor
Right Ascension16h 17m 30s
Declination+75° 45' 19"
Distance98 light years
30 parsecs
MagnitudeApparent: +4.96
Absolute: +2.58
Spectral ClassF5V bright yellow dwarf
Optimum VisibilityJune (Usually visible from northern latitudes)
NotesEta Ursae Minoris is also known as Anwar al Farkadain, a name that historically belonged to Kochab or Beta Ursae Minoris before being transferred to this star. It is relatively similar to the Sun, though rather hotter and more massive, and its greater mass contributes to a significantly greater rate of rotation. Anwar al Farkadain turns on its axis more than forty times faster than the Sun, completing a rotation in approximately 1.4 days.

The bright star to the north and west (right) of Anwar al Farkadain in this image is blue 19 Ursae Minoris. Though this star is approximately six times farther from the Sun than Anwar al Farkadain, it is much more intrinsically luminous, and so the two stars have similar apparent magnitudes as seen from Earth. Imagery provided by Aladin sky atlas

Location of Eta Ursae Minoris

The location of Anwar al Farkadain or Eta Ursae Minoris, the faintest of the four stars that make up the 'bowl' of the Little Dipper, otherwise known as Ursa Minor.

An F-type (pale yellow) dwarf star near the Northern Celestial Pole, a little under one hundred light years from the Solar System. It is the faintest of the four stars that mark out the rectangular 'bowl' of the Little Dipper formation in Ursa Minor. It is a useful reference point in the sky, since it is easy to locate and has a magnitude of almost exactly +5.0.

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