Yoivasca was a verdant planet located in the Atravis sector of the galaxy's Western Reaches and Outer Rim Territories. As a legacy world, Yoivasca was environmentally protected and sparsely inhabited. The planet was the site of the Battle of Yoivasca in 15 BBY, when Gilan Kirkaag's fleet fought and lost against the Galactic Empire. The Empire later established a presence on Yoivasca because the planet was rich in materials necessary to construct the First Death Star.