Alpha Centauri A

Alpha Centauri A is the primary star of the nearest stellar system to the Sun. It is a solar-type star slightly larger and more luminous than our Sun, orbiting with Alpha Centauri B every 79.9 years.

Stellar Data

Notable Facts

• Alpha Centauri A is the closest Sun-like star to our Solar System
• It is slightly larger and brighter than the Sun
• The Alpha Centauri system is the closest star system at 4.37 light-years