Entering orbit…
| Yours | GJ 229 b | |
|---|---|---|
| Mass | 10.1 × Earth | 14.9 × Earth |
| Radius | 3.50 × Earth | 3.97 × Earth |
| Density (composition) | 1.30 g/cm³ | 1.31 g/cm³ |
| Temperature | 124.6 K | 112.0 K |
| Starlight received | 0.04 × Earth | 0.02 × Earth |
| Star temperature | 5,600 K | 3,564 K |
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
Tidal flexing melts its interior: an actively volcanic surface (Io-like).