Exoplanet CatalogExoplanet Ross 128 b
Radius1.11 R⊕Earth = 1
Mass1.4 M⊕Earth = 1
Orbital period9.87 d
Equilibrium temp.301 K≈ 28 °C
Distance11.0 ly
Discovered2017Radial Velocity
Size compared (radius, Earth = 1)
1.00
1.11
3.88
11.21
Where it sits among all planets (percentile)
6%
5%
48%
11%
0%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Ross 128 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Ross 128 b | 9.87 | 1.11 | 1.4 | 301 | 2017 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Ross 128 | M4 | 3,192 | 0.20 | 0.17 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.