| Phoebe | |
|---|---|
| |
| Diameter | 220 km 136 mi. |
| Distance from primary | 12,952,000 km 8,047,999 mi. |
Phoebe is an irregular satellite of Saturn. It is thought to be a captured planetesimal from the Kuiper belt. It was discovered by William Henry Pickering on 17 March 1899 from photographic plates that had been taken starting on 16 August 1898 at the Boyden Observatory near Arequipa, Peru, by DeLisle Stewart. It was the first satellite to be discovered photographically.[1]