RheaRhea| MEAN RADIUS | 764 km |
| MASS | 0.000416 (Earth=1) |
| DENSITY | 1.33 (gm/cm) |
| GRAVITY | 0.029 (Earth=1) |
| ORBIT PERIOD | 4.518 (Earth days) |
| ROTATION PERIOD | 4.518 (Earth days) |
| SEMIMAJOR AXIS OF ORBIT | 527,100 km |
| ECCENTRICITY OF ORBIT | 0.001 |
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