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Alpha Centauri B

Star
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upload.wikimedia.org/wikipedia/commons/8/80/Artist...
Surface temperature: 5,260 K
Spectral type: K1 V
Luminosity: 0.5002 L☉
Mass: 1.804 × 10^30 kg (0.907 M☉)
Magnitude: 1.33
Radius: 373,310 mi
Distance to Earth: 4.37 light years