| Proper Name | Phoebe | | Designation | Saturn IX | | Primary Planet | Saturn | | Orbital Period | 1 year, 185 days | | Distance from Saturn | Semi-Major Axis: 12,947,800 km
Periapsis: 10,824,000 km
Apoapsis: 15,071,000 km | | Eccentricity | 0.1640 | | Rotation Period | 9 hours, 17 minutes | | Mean Diameter | 213 km
132 miles | | Notes | Phoebe is the innermost and largest of a widely dispersed group of about a hundred outer Saturnian moons known as the Norse group. The other members of the group take their names from Norse mythology, but Phoebe was discovered in 1899, decades before the other moons in the group, and bears a name from Greek tradition. |
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