I have come across two terms that are used in EDDB which are new to me, but I think are specific to EDDB only.
They are: Bodies and Attractions.
Bodies seem to include any naturally occurring solid object within a System.
Examples being: Star, Sun, Planet, Moon, Asteroid, Meteor, Meteor Belt or Shower, etc.
Attractions seem to include manufactured or naturally occurring planetary object or objects.
Examples being: Laboratories, ships, barracks, plantations, beacons, presidents, installations, histories, enterprises, universities, etc.