Dwarf planet
Pluto ♇
Reclassified as a dwarf planet in 2006. New Horizons flew past in 2015 and found nitrogen glaciers and a heart-shaped plain, Tombaugh Regio.
| Diameter | 2,377 km |
|---|---|
| Mean distance from the Sun | 39.480 AU (5,906 mln km) |
| Rotation period | 6.4 days (retrograde) |
| Orbital period | 247.9 year |
| Known moons (2025) | 5 |
| Symbol | ♇ Astronomical symbols |
| Naked-eye visible | No |