Alpha Centauri

Alpha Centauri

Centaurus

-0.27
Apparent Mag
4.37
Distance (ly)
G2V+K1V
Spectral Type
5,790
Temperature (K)

Alpha Centauri, the closest star system to Earth, appears as a single bright star but is actually a triple system.

Stellar Data

Apparent Magnitude-0.27
Absolute Magnitude4.38
Distance4.37 light-years
Spectral TypeG2V+K1V
Temperature5,790 K
Luminosity1.52 L☉
Radius1.22 R☉
Mass1.1 M☉
Right Ascension14h 39m 36.5s
Declination-60° 50′ 02.4″
ConstellationCentaurus

Notable Facts

  • Alpha Centauri is the closest star system at 4.37 light-years
  • It is the third-brightest star in the sky
  • The system consists of three stars including Proxima Centauri

More Stars in Centaurus

View constellation