Wikia

Detria II was the second planet in the Detrian planetary system. This planet was classified as a gas giant.

In 2369, Detria II collided with another, bigger gas giant in the system, Detria VI; through a fusion reaction this collision gave birth to a new star. (TNG: "Ship in a Bottle")

The planet was identified "Deltria II" on an LCARS display of the collision.

Deltria II
Detria VI (bottom right corner) prior to collision with Detria II
Type:	Gas giant
Location:	Detrian system

Detria II