Celestial Body

Io

Moon

Explore the fascinating properties and orbital characteristics of Io. Detailed scientific measurements and discovery information about this celestial body.

Scientific Data

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Physical Properties

Mean Radius

1,821.5 km

Equatorial Radius

1,821.6 km

Polar Radius

N/A

Flattening

N/A

Density

3.5271 g/cm³

Surface Gravity

1.79 m/s²

Mass

8.932 × 10^22 kg

Volume

2.5319 × 10^10 km³

Escape Velocity

N/A

Dimension

N/A

Average Temperature

N/A

Axial Tilt

N/A

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Discovery

Discovered By

Galileo Galilei

Discovery Date

07/01/1610

Alternative Name

None

Orbits

Jupiter

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Orbital Characteristics

Semi-Major Axis

421,800 km

Perihelion

420,071 km

Aphelion

423,529 km

Eccentricity

0.004

Inclination

0.036°

Orbital Period

1.77 days

Rotation Period

42.46 hours

Mean Anomaly

N/A

Argument of Periapsis

N/A

Longitude of Ascending Node

N/A