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At a Glance

Celestial Size Comparison

Choose the celestial objects you’re curious about. See at a glance how their sizes and environments compare.

Pluto2,376.6 km

Ceres939.4 km

Measurement	Pluto	Ceres
Mean radius	≈ 1,188.3 km	≈ 469.7 km
Diameter	≈ 2,376.6 km	≈ 939.4 km
Spherical approximate volume	≈ 7,028,568,805.5 km3	≈ 434,060,523.5 km3
Mass	≈ 1.303E22 kg	≈ 9.384E20 kg
Mean density	≈ 1,854 kg/m³	≈ 2,162 kg/m³
Surface gravity	≈ 0.62 m/s²	≈ 0.28 m/s²
Escape velocity	≈ 1.2 km/s	≈ 0.5 km/s
Rotation period	≈ -153.293 h	≈ 9.074 h
Orbital period	≈ 90,560 d	≈ 1,679.853 d
Mean temperature	≈ 44 K (-229.1°C)	≈ 167 K (-106.1°C)
Surface pressure	≈ 1 Pa	≈ 0 Pa
Orbital semi-major axis	≈ 5,906,380,000 km	≈ 413,720,779.5 km

Mean radius

Pluto: ≈ 1,188.3 km
Ceres: ≈ 469.7 km

Diameter

Pluto: ≈ 2,376.6 km
Ceres: ≈ 939.4 km

Spherical approximate volume

Pluto: ≈ 7,028,568,805.5 km3
Ceres: ≈ 434,060,523.5 km3

Mass

Pluto: ≈ 1.303E22 kg
Ceres: ≈ 9.384E20 kg

Mean density

Pluto: ≈ 1,854 kg/m³
Ceres: ≈ 2,162 kg/m³

Surface gravity

Pluto: ≈ 0.62 m/s²
Ceres: ≈ 0.28 m/s²

Escape velocity

Pluto: ≈ 1.2 km/s
Ceres: ≈ 0.5 km/s

Rotation period

Pluto: ≈ -153.293 h
Ceres: ≈ 9.074 h

Orbital period

Pluto: ≈ 90,560 d
Ceres: ≈ 1,679.853 d

Mean temperature

Pluto: ≈ 44 K (-229.1°C)
Ceres: ≈ 167 K (-106.1°C)

Surface pressure

Pluto: ≈ 1 Pa
Ceres: ≈ 0 Pa

Orbital semi-major axis

Pluto: ≈ 5,906,380,000 km
Ceres: ≈ 413,720,779.5 km

Please Note

This comparison is based on the most reliable observational data available. Celestial information may change with new research and observations, so please treat it as a general guide rather than a definitive source.