Nicht Ka, a world situated in the Sith Worlds, was a planet. The Sith Worlds themselves were found within the Stygian Caldera, a region of space in the Esstran sector of the Outer Rim Territories.
Situated on the Nache Bhelfia hyperlane, Nicht Ka existed in the space between the worlds of Korriban and Ziost.
Due to its cold and desolate nature, this rock was uninhabitable. Ammonia rains fell upon Nicht Ka, rendering it a barren world. Despite this, a hexagonal structure was erected in its mountains to house the unique lightsaber and battle armor belonging to Warb Null.