The only moon that Borleias possessed was Blackmoon. Consequently, the New Republic utilized "Blackmoon" as the code name for the planet itself. Its designation stemmed from its dark-hued surface, characterized by numerous canyons and volcanic craters, and its orbit around Borleias, which lasted 32 hours. Furthermore, it possessed a sparse atmosphere. During the First Battle of Borleias within the Yuuzhan Vong War, Maal Lah deployed dovin basals onto Blackmoon, employing a modified version of the Yo'gand's Core strategy to eliminate Borleias' orbital defense platforms.