Procyon V

Procyon V was a planet, a Class O water world located in Sector 006 of the galaxy's Beta Quadrant, in orbit of the binary Procyon, star system (also known as Andorian system) in Federation space. 

Details and history
Procyon V was one of the first worlds visited by Andorian explorers. 

In the 26th century, the Federation alliance engaged the Sphere Builders and their Temporal Liberation Front allies in the Battle of Procyon V. When the USS Enterprise (NCC-1701-J) destroyed the command sphere with the help of a future artifact, the Tox Uthat quantum phase inhibitor, the Sphere Builders were defeated and their extra-dimensional expanse dissolved. This pivotal event was a major target for factions of the Temporal Cold War, resulting in factions from the 22nd to the 31st century taking part. (