Exoplanet CatalogThe GJ 229 planetary system
Distance (light-years)18.8
Spectral typeM1.5V
Temperature (K)3,564
Mass (Sun = 1)0.51
| Planet | Method | Year | Orbital period (days) | Radius (Earth = 1) | Mass (Earth = 1) | Equilibrium temperature (K) |
|---|---|---|---|---|---|---|
| GJ 229 A c | Radial Velocity | 2020 | 121.93 | 2.87 | 8.6 | 188 |
| GJ 229 b | Radial Velocity | 2014 | 579.47 | 3.97 | 14.9 | 112 |
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) |
|---|---|---|---|
| M1.5V | 3,564 | 0.46 | 0.51 |
About this page
GJ 229 is about 18.8 light-years from the Sun and has 2 confirmed planet(s).