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Encyclopedia > Saturn > Satellites > Rhea
RHEA : SATELLITE V OF SATURN
Rhea (Saturn V) was discovered by Cassini in 1672. Its revolution period is 4 days and 12 hours.
Rhea looks surprisingly like Dione with two hemispheres with "front" and "back" equally dissimilar.
| Characteristics | Values |
|---|---|
| Semi-major axis in km | 527 367 |
| Revolution period | 4.517 days |
| Rotation period | 4.517 days |
| Orbital velocity | 8 km/s |
| Inclination on the equator of Saturn | 0.35° |
| Eccentricity of the orbit | 0.0003 |
| Equatorial diameter (Earth=1) | 0.12 |
| Equatorial diameter | 1528 km |
| Visual magnitude at the opposition | 9.7 |
| Flattening | 0 |
| Mass (Saturn=1) | 4/1000 000 |
| Density (Water=1) | 1.2 |
| Escape velocity | 659 m/s |
| Reflectivity (geometric albedo) | 0.7 |
| The highest peak | ? |
| Deepest pit | 5000m |
| Atmosphere | no |
| Composition | Ice for more than 2/3 silicates |