Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Degradação orbital-pt#Sense
Degradering av bana-sv#Sense
Nedbrydning af kredsløb-da#Sense
Usure de l'orbite-fr#Sense
Dégénérescence-fr#Sense
Κατάπτωση τροχιάς-el#Sense
Φθορά τροχιάς-el#Sense
Degradación orbital-es#Sense
Orbital decay-en#Sense