Proxima Centauri b photograph

Proxima Centauri B

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Distance to Earth4. 24 light years
Orbital period11 days
DiscoveredAugust 24, 2016
Temperature234 K (−39 °C; −38 °F)
Mean radius1. 07+0. 38; −0. 31R⊕, 1. 30+1. 20; −0. 62R⊕
CoordinatesRA 14h 29m 43s | Dec -62° 40′ 46″
Date of Reg.
Date of Upd.
ID2249452
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About Proxima Centauri B


Proxima Centauri b is an exoplanet orbiting in the habitable zone of the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system. It is located about 4. 2 light-years from Earth in the constellation of Centaurus, making it the closest known exoplanet to the Solar System.

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