Class H

In the Federation standard system of planetary classification, a class H planet was characterized as usually being uninhabitable by Humans. In the Treaty of Armens, "unwanted lifeforms inhabiting H-class worlds may be removed at the discretion of the Sheliak Corporate." 

An H-class planet or moon could contain an atmosphere consisting of oxygen and argon. 

Example

 * Tau Cygna V

Klasse H Класс H Hクラス Klasse H