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Kappa Ursae Majoris: Wikis

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κ Ursae Majoris
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Major
Right ascension 09h 03m 37.5s
Declination +47° 09' 24"
Apparent magnitude (V) +3.57
Distance 423 ± 46 ly
(130 ± 14 pc)
Spectral type A0IV-V + A0V
Other designations
12 Ursae Majoris, HR 3594,
HD 77327, BD+47 1633,
FK5 341, HIP 44471,
SAO 42661, GC 12503,
ADS 7158, CCDM 09036+4709

Kappa Ursae Majoris (κ UMa / κ Ursae Majoris) is a binary star in the constellation Ursa Major. It is approximately 423 light years from Earth and has the traditional names Talitha Australis, Al Kaprah, and Alphikra Australis.

Both components of the binary star are a white A-type main sequence dwarfs. They have apparent magnitudes of +4.2 and +4.4, which gives the system a combined apparent magnitude of +3.57. The orbital period of the binary is 36 or 74 years, and the two stars are separated by 0.13 arcseconds.

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