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Proxima Centauri is the nearest star to Earth after the Sun, ... consistent with a measurement of 92.1 +4.2 −3.5 days from radial velocity observations. ...
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.
Proxima Centauri b is the closest exoplanet to Earth, [20] at a distance of about 4.2 ly (1.3 parsecs). [5] It orbits Proxima Centauri every 11.186 Earth days at a distance of about 0.049 AU, [1] over 20 times closer to Proxima Centauri than Earth is to the Sun. [21] As of 2021, it is unclear whether it has an eccentricity [e] [24] but Proxima Centauri b is unlikely to have any obliquity. [25]
The planet, dubbed Proxima b because it orbits Proxima Centauri, is thought to be a rocky and slightly more massive than Earth -- but that's not all. Scientists discover Earth-like planet orbiting ...
The Alpha Centauri star system is the closest star system to the Sun. List of nearest M-type stars ... Proxima Centauri: 4.24 [1] M5.5Ve [1] 0.1542 ± 0.0045 [2]
The parsec is defined in terms of the astronomical unit, is used to measure distances beyond the scope of the Solar System and is about 3.26 light-years: 1 pc = 1 au/tan(1″) [6] [61] Proxima Centauri: 268,000: ± 126 Distance to the nearest star to the Solar System – Galactic Centre of the Milky Way: 1,700,000,000 –
The closest star to Earth, Proxima Centauri (PC), is still about 8000 times further away from us than Pluto. Propelling a probe to PC will require a much higher cruising speed than we can ...
Proxima Centauri, the nearest known star to Earth other than the Sun, is about 1.3 parsecs (4.24 ly) away by direct parallax measurement. The distance to the open cluster Pleiades is 130 ± 10 pc ( 420 ± 30 ly ) from us per Hipparcos parallax measurement.