satellite

[1]	moon , artificial satellite , orbiter , spacecraft , (Old-fashioned) sputnik
[2]	follower , planet , attendant , retainer , disciple , acolyte , aide , aide-de-camp , minion , lieutenant , assistant , helper , hanger-on , dependant , shadow , right-hand man , vassal , parasite , sycophant , (Colloq) sidekick