Pluto and Ceres
Pluto (dwarf planet) and Ceres (dwarf planet) side by side – to scale and in numbers.
| Pluto | Ceres | Pluto ÷ Ceres | |
|---|---|---|---|
| Diameter | 2,376 km | 939 km | 2.53 × |
| Mass | 1.30 × 10²² kg | 9.38 × 10²⁰ kg | 13.9 × |
| Surface gravity | 0.70 m/s² | 0.28 m/s² from GM and radius |
2.47 × |
| Density | 1,850 kg/m³ | 2,162 kg/m³ | 0.86 × |
| Mean temperature | -225 °C | – | |
| Mean distance from the Sun | 5.91 billion km | 413.8 million km | 14.3 × |
| Length of day | 6.4 days | 9.1 h rotation period |
16.9 × |
| Year (orbit around the Sun) | 247.9 years | 4.60 years | 53.9 × |
| Known moons | 5 | – |
Data: NASA Planetary Fact Sheet, JPL SSD (planetary moons), JPL SBDB (dwarf planets) – public domain. Moon gravity is calculated from the JPL mass (GM) and radius; a moon’s “year” is its planet’s orbit around the Sun. A dash – no value in these sources.
⇄ Swap sides More about Pluto More about Ceres