Sun (G2)

G2, 9 planets: R5 H12 / E13.1 D7.2 / A G140.16 G120.18 G50.15 G50.8 J2.1

(3) Earth: Earthlike, diameter 13000 km, density 5.5 g/cm„,

gravity 1.0 G, rotation 24 h, period 365 d (365 local days),

temperature 15ƒC, oceans 70%, mineral rating 8, 1 moon;

advanced vertebrates, Earthlike biochemistry;

intelligent life.

Alpha Centauri (G2,K0,M5)

(A) G2, 6 planets: R9.3 H8 / H10 M15.2 / J5.1 G110.9

(A.4): Marginal, diameter 15000 km, density 5.0 g/cm„,

gravity 1.1 G, rotation 8 d, period 324 d (40.5 local days),

temperature -5ƒC, oceans 10%, mineral rating 6, 2 moons;

advanced invertebrates, protein-based biochemistry;

eccentric orbit, volcanic activity.

(B) K0, 2 planets: R10.2 / H8 /

(C) M5, 1 planet: H17.1 / /