Exoplanet CatalogExoplanet GJ 229 b
Radius3.97 R⊕Earth = 1
Mass14.9 M⊕Earth = 1
Orbital period579.47 d
Equilibrium temp.112 K≈ -161 °C
Distance18.8 ly
Discovered2014Radial Velocity
Size compared (radius, Earth = 1)
1.00
3.88
3.97
11.21
Where it sits among all planets (percentile)
61%
59%
91%
2%
1%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of GJ 229 (2)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| GJ 229 A c | 121.93 | 2.87 | 8.6 | 188 | 2020 |
| GJ 229 b | 579.47 | 3.97 | 14.9 | 112 | 2014 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| GJ 229 | M1.5V | 3,564 | 0.46 | 0.51 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.