Spectral TypeG2 V
Temperature5,790 K
G2 V TypeConstellation: Centaurus
Alpha Centauri A
Rigil KentaurusAlpha Centauri
Alpha Centauri A is the primary star in the closest stellar system to the Sun.
Distance
4.37 ly
Light Years from Earth
Age
5.3 billion years
Estimated
Mass
1.1 M☉
Relative to Sun
Radius
1.22 R☉
Relative to Sun
Surface Temp
5,790 K
Effective Temp
Luminosity
1.52 L☉
Total Energy Output
Astrophysical Data
Apparent Magnitude-0.01
Absolute Magnitude4.38
Spectral ClassificationG2 V