Alpha Centauri star and planetary system

Alpha Centauri a, a star, is the first component. It is 1,702,235 km in diameter. It is about 1.1 times the mass of than the sun. It revolves around Alpha Centauri b, another star. It is 1,201,568 km in diameter. It is 0.9 times the mass of our sun. It also revolves around Alpha Centauri a, making it a binary system. Near the star system is Proxima Centauri, a star 214,560 km in diameter. It has a planet that is 1.17 Earth masses and 14,526 km in diameter. It is called Proxima Centauri b.

Overall, the system is 4.2 ly from us. 1 ly is 9,460,716,019,200 km or the distance light goes in a year.