Well, yes, technically Uveto is a moon. But outside of the Pedantverse we can still call it a planet in game terms
Well more a side planet, then a planet planet. In fact I'd say there are 4 types of planet:
1) Story planets (Tarkus, Myrellion, Mhen'ga)
2) Side planets (New Texas and Uveto)
3) Holiday Special planets (Poe A and Ausuril)
4) Space-stations (Tavros and Canadia)
But this is if we assume planet to mean "place in game that's not just a spaceship", but then again the Kashima is pretty big and has more content than Poe A and Ausuril combined.
Eh too tired to even know where I'm going with this.