Facts about Alpha Centauri B
- 09
Spectroscopic analysis reveals Alpha Centauri B contains fewer heavy elements than our Sun, with a metallicity approximately 76 percent of the solar value.
- 08
In 2020, astronomers detected evidence that Alpha Centauri B's habitable zone planet Bc may be a super-Earth with potential atmospheric conditions suitable for liquid water.
- 07
Alpha Centauri B's stellar classification as a K1V star indicates it contains approximately 0.9 solar masses with a radius roughly 86 percent of the Sun's diameter.
- 06
Roughly 1.3 times the Sun's luminosity, Alpha Centauri B radiates enough energy to make it one of the brightest stars visible from Earth despite its distance of 4.37 light-years.
- 05
Binary orbital dynamics cause Alpha Centauri B to complete one full revolution around its companion star Alpha Centauri A every 79.91 years.
- 04
Orange dwarfs like Alpha Centauri B burn hydrogen so slowly they can persist for approximately 37 billion years, far exceeding our Sun's 10 billion year lifespan.
- 03
Observations suggest Alpha Centauri B hosts a planet roughly 1.1 times Earth's mass orbiting within its habitable zone.
- 02
Proxima Centauri's companion star Alpha Centauri B has a surface temperature of approximately 5,260 Kelvin, making it significantly cooler than our Sun's 5,778 Kelvin surface.
- 01
At 4.37 light-years distant, Alpha Centauri B is an orange dwarf star approximately 90 percent as massive as our Sun.