1.33
Apparent Mag4.37
Distance (ly)K1V
Spectral Type5,260
Temperature (K)Alpha Centauri B is the secondary star of the Alpha Centauri system. It is a K-type main-sequence star slightly smaller and cooler than the Sun.
Stellar Data
Apparent Magnitude1.33
Absolute Magnitude5.71
Distance4.37 light-years
Spectral TypeK1V
Temperature5,260 K
Luminosity0.5 L☉
Radius0.8632 R☉
Mass0.907 M☉
Right Ascension14h 39m 35.1s
Declination-60° 50′ 13.8″
ConstellationCentaurus
Notable Facts
- Alpha Centauri B orbits Alpha Centauri A with a period of 79.9 years
- It is the second star in the nearest star system to Earth
- Its spectral type K1V makes it slightly cooler and oranger than the Sun