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Alpha Centauri
- Reference
- a-eto01-00111
- Date
- 2008-11-13
Alpha Centauri is a binary star (Alpha Centauri A and B) located at a distance of 4.36 light-years, or 41 million million km, in the direction of the southern constellation Centaurus (The Centaur). Alpha Centauri A and Alpha Centauri B, are rather similar to the Sun; their stellar spectral types are "G2V" and "K1V", respectively. Alpha Centauri A and B orbit each other at a distance of about 3600 million km, or somewhat more than the distance of planet Uranus from the Sun. The orbital period is almost exactly 80 years.
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