Io

Discovered 07/01/1610 · Galileo Galilei

Mean Radius

1,821.5 km

Gravity

1.79 m/s²

Temperature

0 K (-273°C)

Orbital Period

1.8 d

Orbit Distance

421,800 km

Physical Properties

Mean Radius1,821.5 km

Mass8.9320 × 10^22 kg

Surface Gravity1.79 m/s²

Density3.527 g/cm³

Escape Velocity0.00 km/s

Mean Temperature0 K (-273°C)

Axial Tilt0.00°

Rotation Period42.46 h

AtmosphereNone

Orbit around Jupiter

Semi-major Axis421,800 km

Eccentricity0.004000

Inclination0.0360°

Orbital Period1.77 days

3D View Image Gallery

Data Sources

Physical & orbital data: Solar System OpenData API (api.le-systeme-solaire.net) · Orbital elements: NASA JPL / IAU Working Group on Cartographic Coordinates