Earth Colony II

Earth Colony II was the name of an Earth colony.

Earth Colony II was the site for a research base where James T. Kirk's brother "Sam" hoped to move with his wife Aurelan and their three sons when Kirk last saw him – at the departure of the USS Enterprise (NCC-1701) on her five-year mission in 2265.

In 2266, on Exo III, Captain Kirk tested Dr. Korby's android for precise knowledge of his personal history in the presence of Andrea, Nurse Chapel, and Korby: it knew that brother Sam hadn't said he would go to Colony II, but only that he hoped to go there. 

Background
According to the Star Trek: Star Charts ("United Federation of Planets I"), in 2378, Earth Colony 2 was a Federation member.

Erdkolonie II 地球コロニー2