With a rare combination of features, Nepneu is of particular interest to the scientific community. Nepneu is a small terrestrial planet, with a thin atmosphere of carbon dioxide and krypton. As with all the worlds of Farinata, its surface is scorching hot. The crust mainly consists of silicates laced with iron.
- Survey: UNC: Valuable Minerals: Rare Element ×1 (Thorium)
- Survey text states a deposit of thorium is on a "nearby moon."