Class C: Small Rocky Planetoid - Similar to Gothos

Class C: Small Rocky Planetoid - Similar to Gothos

Class B: Small Rocky Planetoid - Similar to Venus

Class S: Largest designation for gas giant. Ultra giant, not suitable for Iffens.

Class L: Habitable planet that supports primitive life. This can be very simple fauna, or even life as advanced as a Bronze Age culture.

Class T: Gas giant. Second smallest designation of gas giant, one size larger than Class J. Typically, Iffens occur here