Yadera II

Yadera II is a planet in the Gamma Quadrant's Yadera star system.

In 2340, Rurigan escaped to Yadera II after Yadera Prime was conquered by the Dominion. Desperate for company, Rurigan developed an omicron particle hologenerator, which recreated Yaderan individuals he had known as holograms. Rurigan's hologenerator had started to fail in 2370 when Odo and Jadzia Dax travelled to the planet. Jadzia repaired the generator and she and Odo agreed to not inform the inhabitants that Rurigan was not a hologram like them. 

The holopeople of Yadera II later invented holoships, which had mobile emitters and the technology to generate wormholes. (SS ST (Guardians))