Ceres and Pluto
Ceres (dwarf planet) and Pluto (dwarf planet) side by side – to scale and in numbers.
| Ceres | Pluto | Ceres ÷ Pluto | |
|---|---|---|---|
| Diameter | 939 km | 2,376 km | 0.40 × |
| Mass | 9.38 × 10²⁰ kg | 1.30 × 10²² kg | 0.07 × |
| Surface gravity | 0.28 m/s² from GM and radius |
0.70 m/s² | 0.41 × |
| Density | 2,162 kg/m³ | 1,850 kg/m³ | 1.17 × |
| Mean temperature | – | -225 °C | |
| Mean distance from the Sun | 413.8 million km | 5.91 billion km | 0.07 × |
| Length of day | 9.1 h rotation period |
6.4 days | 0.06 × |
| Year (orbit around the Sun) | 4.60 years | 247.9 years | 0.02 × |
| 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 Ceres More about Pluto