I'll admit it: I'm a lazy bastard and a filthy cheater. When it comes to doing planetary classification I like to use the Non-Luminary World Classification Scheme from Orion's Arm, because this thing covers everything. The only things it doesn't cover are the really absurd/bizarre space opera classifications.
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"