Kappa Tucanae

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κ Tucanae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Tucana
Right ascension 01h 15m 46.1s
Declination −68° 52' 34"
Apparent magnitude (V) +4.25
Distance 66.6 ± 0.7 ly
(20.4 ± 0.2 pc)
Spectral type F6IV
Other designations
HR 377, HD 7788, CP-69 45 + CP-69 44, HIP 5896 + HIP 5842, SAO 248346 + SAO 248342, GC 1536, CCDM 01157-6852

Kappa Tucanae (κ Tuc, κ Tucanae) is a star system in the constellation Tucana. It is approximately 66.6 light years from Earth and the combined apparent magnitude of the system is +4.25.[1]

The system consists of two binary pairs separated by 5.3 arcminutes. The brightest star, Kappa Tucanae A, is a yellow-white F-type subgiant with an apparent magnitude of +5.1. Its binary companion, Kappa Tucanae B, has a magnitude of +7.3 and is 5 arcseconds, or at least 100 Astronomical Units from A. They complete one orbit every 1222 years.

The other binary pair, the magnitude +7.8 C, and the magnitude +8.2 D, are closer to one another, at 1.12 arcseconds, or at least 23 astronomical units. They orbit each other once every 86.2 years.


  1. ^ "Kappa Tucanae - Double or Multiple Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 October 2013.