Leto Regio (Phoebe)

Daughter of Phoebe in Greek mythology.

Leto Regio is a geological feature on Phoebe, a small outer moon of Saturn. It is classified as a Regio, a large area marked by reflectivity or color distinctions from adjacent areas, or a broad geographic region. (wikipedia entry)

A regio is a large area marked by reflectivity or color distinctions from adjacent areas, or a broad geographic region. On Phoebe they are named after places from the Argonautica.