Exoplanet CatalogThe HD 128311 planetary system
Distance (light-years)53.3
Spectral typeK0
Temperature (K)4,965
Mass (Sun = 1)0.83
| Planet | Method | Year | Orbital period (days) | Radius (Earth = 1) | Mass (Earth = 1) | Equilibrium temperature (K) |
|---|---|---|---|---|---|---|
| HD 128311 b | Radial Velocity | 2002 | 453.02 | 13.50 | 562.2 | 200 |
| HD 128311 c | Radial Velocity | 2005 | 921.54 | 13.00 | 1,204.3 | 158 |
Values are the archive’s composite parameters and may combine several publications; mass may be a minimum mass (M·sin i). “–” means no value in the archive.
The star
| Spectral type | Temperature (K) | Radius (Sun = 1) | Mass (Sun = 1) |
|---|---|---|---|
| K0 | 4,965 | 0.76 | 0.83 |
About this page
HD 128311 is about 53.3 light-years from the Sun and has 2 confirmed planet(s).