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Proxima Centauri
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Proxima Centauri b
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Exoplanet Proxima Centauri b

Exoplanet Proxima Centauri b orbits star Proxima Centauri that lies 4 light years away from the Sun. It weighs about 1.2 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
4 light years

Proxima Centauri b

Exoplanet, rocky planet
icon distanceDistance from the star: 0.05 AU
icon timeOrbit around star: 11.18427 days

Basic characteristic

icon weightMass: 1.2 M Earth
icon radiusSize: 1.1 R Earth | 0.1 R Jupiter
icon densityDensity: 4859 kg/m3 | 88 % Earth
icon temperatureTemperature: 234 K | -39 °C
icon discoveryYear of discovery: 2016 (radial velocity)
Comparison to the Solar system planets
icon massMass: Earth (120 % Earth mass)
icon radiusSize: Earth (110 % Earth radius)
icon massDensity: Mars (124 % Mars density)
icon distanceDistance: Mercury (13 % Mercury distance)
Other designations of this exoplanet
Alpha Centauri C b, CCDM J14396-6050C b, GCTP 3278.00 b, Gliese 551 b, HIP 70890 b, LFT 1110 b, LHS 49 b, LPM 526 b, LTT 5721 b, NLTT 37460 b, V645 Centauri b
Exoplanets around star Proxima Centauri
Exoplanet Proxima Centauri b orbits star Class red dwarf Proxima Centauri, which has much lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
Proxima Centauri b
| 0.05 AU
Proxima Centauri c
| 1.48 AU
Star Proxima Centauri
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