Kappa 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 | |
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.
References
- ↑ "Kappa Tucanae - Double or Multiple Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 October 2013.
This article is issued from Wikipedia - version of the 10/3/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.