Entering orbit…
| Yours | TRAPPIST-1 h | |
|---|---|---|
| Mass | 0.20 × Earth | 0.33 × Earth |
| Radius | 0.72 × Earth | 0.76 × Earth |
| Density (composition) | 3.00 g/cm³ | 4.17 g/cm³ |
| Temperature | 123.7 K | 172.0 K |
| Starlight received | 0.04 × Earth | 0.14 × Earth |
| Star temperature | 8,750 K | 2,566 K |
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Small and distant: a quiet, stable companion.