Troyius

Troyius was a planet in the Tellun system in the Alpha Quadrant. It was the homeworld of the Troyian people, and a rich source of dilithium crystals.

For years prior to 2268, Troyius was at war with Elas, a planet in the inner Tellun system. In 2268, a marriage was arranged between Elaan, the Dohlman of Elas, and the leader of Troyius, in hopes of ending the hostilities. 

By the late 24th century, Troyius had become a member of the United Federation of Planets. In 2381, during the Borg Invasion, the SCE crew aboard the USS da Vinci succeeded in making Troyius temporarily disappear, thus eluding attack.