Detria VI was the sixth planet in the Detrian system. This planet was classified as a gas giant. It had a composition of 92% hydrogen and 8% helium.
In 2369, Detria VI collided with another, smaller gas giant in the system, Detria II; through a fusion reaction, this collision gave birth to a new star. (TNG: "Ship in a Bottle")
The planet was identified "Deltria VI" on an LCARS display of the collision.