I checked and the smallest gas giants are around 4 earth masses and the highest I've seen is about 6, rocky plamets go from 40 moons (uh which is still very very rare to get) up to 2.3 Earths, rocky planets should go up to about 5-6 earths, and gas giants should be from about 10 Earths to the Brown Dwarf limit of 13 jupiters, and the boundry for the Brown Dwarf -to- planet should be more smooth in temperature, going from -273 C to somewhere in the 2000's C doesn't seem very realistic. ..