Arro was the first planet of the Dathomir system, a part of the Quelii sector in the New Territories portion of the Outer Rim Territories. A hot world made of molten rock, it had no moons and orbited the star Domir.
Behind the scenes
Arro was first mentioned in Geonosis and the Outer Rim Worlds, a 2004 sourcebook for the Star Wars Roleplaying Game, published by Wizards of the Coast. The 2009 book The Essential Atlas placed the Dathomir system, and thus Arro, in grid square O-6.