The surface of Hyperion has a large region of high albedo with the signature of H2O ice and another zone of albedo about a factor of four lower. Observations of the surface in the ultraviolet and near-infrared spectral regions with two optical remote sensing instruments on the Cassini spacecraft detail that the low-albedo material has spectral similarities and compositional signatures that link it with the surface of Phoebe.
- D. P. Cruikshank
- J. B. Dalton
- V. Mennella
