Planetary Commendation

Planetary Commendations are an early game commendation that can be earned by completing missions or defeating enemies on planets below level 50. They can be used to purchase specialty items from Planetary commendation vendors in the Supplies wing of the Fleet. Planetary Commendations have a max limit of 100 and no weekly earning limit.

Source
Planetary Commendations are mission rewards that can be obtained by completing missions or defeating enemies on planets below level 50.