Class 6 gas giant

In planetary classification, a class 6 gas giant was a type of gas giant planet. They were hard to distinguish visually from a Class 7 gas giant.

In 2375, the crew of the USS Voyager ordered their new multispatial probe deep into the atmosphere of a class-6 gas giant, to prevent it from being stolen by the Malon. The probe became lodged in a layer of liquid hydrogen and methane, and was later retrieved by the Delta Flyer. 

クラス6巨大ガス惑星 Klasse 6 gasreus Klasse-6-Gasriese