Entering orbit…
| Yours | Proxima Cen d | |
|---|---|---|
| Mass | 0.20 × Earth | 0.26 × Earth |
| Radius | 0.66 × Earth | 0.69 × Earth |
| Density (composition) | 3.83 g/cm³ | 4.32 g/cm³ |
| Temperature | 281.4 K | 282.0 K |
| Starlight received | 1.05 × Earth | 1.81 × Earth |
| Star temperature | — | 2,900 K |
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.