A Class S planet is a planet the has a very tenuous surface. (ST reference: Star Charts) Planets of this typeEdit This article or subsection has an associated category. class S planets Yedeen (class S or class T … This article is a stub relating to a planet, moon or planetoid. You can help our database by expanding on it. Retrieved from "https://memory-beta.fandom.com/wiki/Class_S?oldid=686477" Categories: Memory Beta articles sourced from reference works Class S planets Memory Beta stubs (planets) Planetary classification Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.