|Tau Cygna V|
|Location:||Tau Cygna system|
de Laure belt
Tau Cygna V was the fifth planet in the Tau Cygna system. This system was located within the de Laure belt. This planet was classified as a class H planet. This planet was ceded from the Federation to the Sheliak Corporate in the 2255 Treaty of Armens.
In 2274, the SS Artemis landed on the planet's surface. One third of the crew died of the hyperonic radiation. The survivors established a new colony. In 2366, the population reached 15,253 people, which, however, had to be evacuated, due to the Sheliak claim on the planet. (TNG: "The Ensigns of Command")