Of which planet is Phoebe a satellite? – Saturn

Phoebe is an irregular satellite of Saturn with a mean diameter of 213 km. 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.

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