Ross 128
Ross 128 is an M4 star 11.0 light years away with 1 known planet. It was found in 2017.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| Ross 128 b | 9.866 days | 0.0496 AU | at least 1.4 | 2017 | Radial Velocity |
"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.
Star
- Spectral type M4
- 3,192 K surface temperature
- 0.168 times the mass of the Sun
- 0.1967 times the radius of the Sun
Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.