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Encyclopedia > Jupiter > Satellites> Ganymede II
CHARACTERISTICS OF GANYMEDE (J-3)
| Characteristics | Values |
|---|---|
| Semi-major axis in km | 1 070 000 |
| Revolution period | 7.154 jours |
| Rotation period | 7.154 jours |
| Orbital velocity | 11 km/s |
| Inclination on the equator of Jupiter | 0.3° |
| Eccentricity of the orbit | 0.002 |
| equatorial diameter (Earth=1) | 0.41 |
| Equatorial diameter | 5268 km |
| Visual magnitude at opposition | 4.61 |
| Flattening | 0 |
| Mass (Jupiter=1) | 7.8/100 000 |
| Density (Water=1) | 1.94 |
| Gravity at surface (Earth=1) | 0.40 |
| Escape velocity | 2740 m/s |
| Reflectivity (geometric albedo) | 0.42 |
| Highest summit | ? |
| Deepest pit | ? |
| Atmosphere | no |
| Composition | ice carbonate silicates |
