Exoplanet
Ross 128 b
11.01 light-years
- Discovery
- Radial Velocity · 2017
- Radius
- 1.11 Earth radii
- Mass
- 1.4 (+0.21 / −0.21) Earth masses
- Orbital period
- 9.8658 (+7 × 10⁻³ / −7 × 10⁻³) days
- Semi-major axis
- 0.0496 (+1.7 × 10⁻³ / −1.7 × 10⁻³) AU
- Equilibrium temperature
- 301 K
- Mass provenance
- Msini
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00