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

In 2151, the crew of  traced several Suliban who had kidnapped a Klingon courier named Klaang to the upper atmosphere of a class 7 gas giant. ()

de:Klasse-7-Gasriese
ja:クラス7巨大ガス惑星
nl:Klasse 7 gasreus
7
Class 07 gas giant