1. Proxima Centauri: A red dwarf star, it's actually part of a triple star system with Alpha Centauri A and B. It's the closest star to our sun at approximately 4.24 light-years away.

2. Alpha Centauri A: A yellow dwarf star, it's very similar to our sun in size and temperature. It's about 4.37 light-years away.

3. Alpha Centauri B: An orange dwarf star, it's slightly smaller and cooler than our sun. It's about 4.37 light-years away.

Note that Alpha Centauri A and B form a binary system, meaning they orbit each other.