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Ross 128 b
Orbiting Ross 128, discovered in 2017 (7522) by La Silla Observatory via the Radial Velocity method.
Planet
| Radius | Unknown |
| Mass | 1.40 M⊕ |
| Orbital period | 9.87 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.116 |
| Equilibrium temperature | 301 K (28 °C) |
Host star — Ross 128
| Temperature | 3192 K (2919 °C) |
| Radius | 0.20 R☉ |
| Mass | 0.17 M☉ |
Location
| Distance from Earth | 3.4 pc (~11 light-years) |
| Right ascension / Declination | 176.9376 / 0.7993 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.