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Table 1 examples of knowledge coded with OWL in OntoStar

From: Harnessing ontology and machine learning for RSO classification

Knowledge type Example
Concept hierarchy LargeDebris SubClassOf Debris
Debris SubClassOf SpaceObject
Rocket SubClassOf SpaceObject
Satellite SubClassOf SpaceObject
Disjoint Class (Debris Rocket Satellite)
Internal knowledge LargeDebris≡Debris and (size only xsd:float[>0.1f])
Contextual knowledge of concepts SpaceObject SubClassOf (inOrbit exactly 1 Orbit)
HEO≡Orbit and altitude only xsd:float[>=36000.0f]
Orbit SubClassOf (inclination exactly 1 xsd:float[>=0f,<180])