A group of 3 stars: A, B and C with separations of 19.7" between
the A and B stars, and a period of 80 years.
Absolute magnitude of Alpha Centauri A is 4.7, the size of the Sun plus a little.
Apparent magnitude is .06
Visible light is 1.52 of Sun
Spectrum G2V, K1V, dM5e
Distance 4.34 light years (The closest system!)
Absolute magnitude of Alpha Centauri B is 6.1, less than the Sun but probably the same size or bigger.
Apparent magnitude is 1.33
Visible light is .44 of Sun
Absolute magnitude of Alpha Centauri C is 15.5
Apparent magnitude of C is 10.5
Visible light is .000053 of Sun
Proxima Centauri is another name for Alpha Centauri C
A dwarf and a flare star
It is the closest star to the Sun at 4.24 light years
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