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Proxima Cen b
Orbiting Proxima Cen, discovered in 2016 (7521) by European Southern Observatory via the Radial Velocity method.
Planet
| Radius | Unknown |
| Mass | 1.05 M⊕ |
| Orbital period | 11.18 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.000 |
| Equilibrium temperature | 218 K (-55 °C) |
Host star — Proxima Cen
| Temperature | 2900 K (2627 °C) |
| Radius | 0.14 R☉ |
| Mass | 0.12 M☉ |
Location
| Distance from Earth | 1.3 pc (~4 light-years) |
| Right ascension / Declination | 217.3935 / -62.6762 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.