You mean GalaxyForge or the Map Creator? And if so are they named anything unique to differentiate from the stock models?
the map creator and yes they have unique names (mars, pluto, jupiter and so on).
It should be also mentioned that these planets have random stats, meaning they simply have the stats of ice planets, volcanics and so on and that some textures of planets are not included yet (suns are also not complete).
Anyways im sure Cybdevil will give some exact infos about it soon. ^^