Star

Distance

(Light Years)

Radius*

Mass*

Rad. Vel

km/sec

Rot. Vel

km/sec

1) Proxima Centauri

4.24

0.154

0.122

−22.20

<0.1

2) Alpha Centauri A

4.37

1.22

1.1

−21.4

2.7 ± 0.7

3) Alpha Centauri B

4.37

0.86

0.907

−18.6

1.1 ± 0.8

4) Barnaard’s star

5.96

0.196

0.144

−110.6

<2.5