USGS Astrogeology maintains the official list of planetary feature names for the IAU, called the Gazetteer of Planetary Nomenclature. Additionally, we are active on several IAU working and task groups.
More: USGS Astro - Phoebe's Craters on the Official Gazeteer of Planetary Nomenclature view the complete list of craters and the origin of each name
Image: NASA/JPL - Phoebian Explorers 1 (PIA06117)
Image: NASA/JPL - Phoebian Explorers 2 (PIA06118)
Link: Wikipedia - Jason and the Argonauts