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The distance of Alpha Centauri from the Earth is now reckoned at 4.396 light-years or 4.159 × 10 13 km.) α Centauri A (left) is of the same stellar type G2 as the Sun, while α Centauri B (right) is a K1-type star.
The closest system is Alpha Centauri, with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth. The brightest, most massive and most luminous object among those 131 is Sirius A , which is also the brightest star in Earth's night sky ; its white dwarf companion Sirius B is the hottest object among them.
The Alpha Centauri star system is the closest star system to the Sun. ... Distance Spectral type ... This is a list of O-type stars within 1,500 light years. Name
The nearest known star is Proxima Centauri at 269,000 AU (4.25 ly), [4] followed by Alpha Centauri at about 4.35 light years. [4] Oort cloud comets orbit the Sun at great distances, but can then be perturbed by passing stars and the galactic tides. [5]
The nearest such planet was then as close as 12 light-years away [7] [8] but (see below) is now estimated slightly above four light-years away. On August 24, 2016, astronomers announced the discovery of a rocky planet in the habitable zone of Proxima Centauri, the closest star to Earth (not counting the
If all goes well, the observers would reach the relatively close-by system (4.4 light years away) within 20 years of leaving Earth. 'Starshot' plan gets probes to Alpha Centauri in your lifetime ...
1.71 Gm – diameter of Alpha Centauri A, one of the closest stars. ... 39.9 Pm – 4.22 light-years – distance to Proxima Centauri (nearest star to Sun) 81.3 Pm ...
Proxima Centauri is a member of the Alpha Centauri star system, being identified as component Alpha Centauri C, and is 2.18° to the southwest of the Alpha Centauri AB pair. It is currently 12,950 AU (0.2 ly ) from AB, which it orbits with a period of about 550,000 years.