File:Centaurus_constellation_map.svg · Wikimedia Commons · See Wikimedia Commons
Beta Centauri
Sign in to saveAlso known as HR 5267, HIP 68702, HIC 68702, HD 122451, Agena, Hadar, β Cen, β Centauri
star system in the southern constellation of Centaurus
Beta Centauri is a bright star system located in the Centaurus constellation in the southern sky. It is one of the notable stars in that region and serves as an important reference point for observers studying the southern celestial sphere.
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Wikidata facts
- Distance from Earth
- 50
- Radius
- 7.07
- Image
- Centaurus constellation map.svg
Show 14 more facts
- catalog code
- WEB 12025
- spectral class
- B1
- Commons category
- Beta Centauri
- apparent magnitude
- 1.278
- right ascension component of proper motion
- -21
- absolute magnitude
- -5.42
- luminosity
- 41700
- right ascension
- 210.955855623
- declination
- -60.373035162
- effective temperature
- 26720
- radial velocity
- -12.0
- parallax
- 8.32
- stellar rotational velocity
- 105
- declination component of proper motion
- -25
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Article
Beta Centauri is a triple star system in the southern constellation of Centaurus. It is officially called Hadar (/ˈheɪdɑːr/). The Bayer designation of Beta Centauri is Latinised from β Centauri, and abbreviated Beta Cen or β Cen. The system's combined apparent visual magnitude of 0.61 makes it the second-brightest object in Centaurus and the eleventh brightest star in the night sky. According to dynamical parallax measurements, the distance to this system is about 361 light-years (111 parsecs).
Nomenclature