Saturn · natural satellite

Phoebe

Mean diameter: 213 km
Mean orbital distance: 12,929,400 km from centre
Orbital period: 550.304 Earth days

Compared with our Moon

Phoebe · 213 km

Moon · 3,474.8 km

One diameter scale. Circle shapes compare volume-equivalent diameters; irregular moons are not spheres.

Orbit & discovery

Surface gravity: 0.049 m/s²
Discovery: 1898
Discoverer / team: W.H. Pickering
Provisional designation: —
JPL satellite ID: 609
Orbital eccentricity: 0.164
Inclination: 175.2 degrees

Inclination reference: Laplace. Mean-element epoch: 2000-01-01.5 TDB · SAT441.

Diameters use volume-equivalent mean radii, including for irregular bodies. Mean orbital elements describe an orbit; they are not live positions. Missing physical measurements remain unavailable.

Physical measurements & uncertainties

Mean radius · km: 106.50 ±0.70 [1]
GM · km³/s²: 0.55479 ±0.00108 [SAT441]
Density · g/cm³: 1.6428 ±0.0326 [*]

Missions in the Saturn system · 5 records

5 launches · 0 linked events

These records cover the planetary system. A system mission did not necessarily visit this moon. Dedicated targets are marked separately; programme events include the journey and briefings. Launch outcomes do not establish arrival, landing success or present spacecraft operation.

Dedicated targets only

PLANETARY SYSTEM · UPCOMING