Tuvonne
Infobox
Tuvonne
| Celestial classification | HH-001P8B |
|---|---|
| Host body | Nocturne |
| Moon type | Frigid |
| Composition | 45% ice, 50% rock, 5% metal |
| Surface type | 100% solid |
| Lowest surface temperature | 34ºK (-239ºC) |
| Average surface temperature | 47ºK (-226ºC) |
| Highest surface temperature | 55ºK (-218ºC) |
| Surface gravity | 0.8 ms-2 |
| Ice caps | N/A |
| Self-sustaining native life | None |
Physical attributes
| Distance from host | 0.00237 AU (354,546 km) |
|---|---|
| Orbital period | 141 hours |
| Rotational period | 141 hours |
| Radius | 1,321.1 km |
| Density | 2.2 g/cm3 |
| Mass | 0.0035 MEstra |
| Geological activity | Non-tectonic high |
| Tidally locked | To parent |
| Has rings | No |
Tuvonne (Celestial Classification HH-001P8B) is a frigid and geologically active moon orbiting the ice giant Nocturne in the Sol star system. With an oft renewed icy surface resulting from sets of cryovolcanoes, the moon is partially coated by layers of both water ice as well as frozen nitrogen. Subsurface scans show that tectonic activity may have once been a regular occurrence on Tuvonne, although this is no longer the case. The same scans also revealed the presence of an ocean beneath the thick icy layer, but this has not yet been confirmed to house any signs of life.