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Table 4
Properties of the α Centauri binary.
| α Cen A | α Cen B | |
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| Sp.typea | G2 V | K1 V |
| Teff (K)b | 5824 ± 24 | 5223 ± 62 |
| Lstar (L⊙)b |
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|
| Mstar (M⊙)bc | 1.105 ± 0.007 | 0.934 ± 0.006 |
| Rstar (R⊙)a | 1.224 ± 0.003 | 0.863 ± 0.005 |
| acrit (AU)d | 2.778 ± 1.476 | 2.522 ± 1.598 |
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| Common parameters | ||
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| Inclination to LOS, i (°)c | 79.20 ± 0.04 | |
| Arg. of periapsis, ω (°)c | 231.65 ± 0.08 | |
| Long. of asc. node, Ω (°)c | 204.85 ± 0.08 | |
| Period (yr)bc | 79.91 ± 0.01 | |
| Eccentricityc | 0.5179 ± 0.0008 | |
| Distance (pc)b | 1.348 ± 0.035 | |
| Age (yr)e | (4.85 ± 0.50) × 109 | |
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