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< back to Planets
Planet Jupiter Moons: Io
Io is a moon of the planet Jupiter.
For a listing of other moons, see Moons of the planets.
| Io Moon Facts |
| Mass (kg) |
8.94e+22 |
| Radius (km) |
1,815 |
| Density (gm/cm3) |
3.55 |
| Distance from Jupiter (km) |
421,600 |
| Period of rotation (days) |
1.769138 |
| Period of orbit (days) |
1.769138 |
| Orbital velocity (km/sec) |
17.34 |
| Eccentricity of orbit |
0.004 |
| Inclination of orbit (°) |
0.040 |
| Visual albedo |
0.61 |
| Visual magnitude |
5.02 |
This moon can be viewed with binoculars or any telescope.
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