Ajan Kloss was a jungle moon located in the Cademimu sector of the Outer Rim Territories, in grid square L-5 on the Standard Galactic Grid, orbiting the gas giant Ajara. It was notably used by Luke Skywalker to train Leia Organa in the way of the Jedi Order as his first student of a new generation of Jedi and later the Resistance during the war against the First Order, who established a base there.

Although Ajan Kloss was a moon, it had two moons of its own. Its gas giant shielded it from harmful radiation. The jungle resonated with life and Resistance scouts would routinely check for new species to be used in medicine, though the moist environment meant technicians had to work double-time to moisture proof electronics. Other annoyances on the planet included fungal and insect infections, but there were no large predators on the moon. Jedi MasterLuke Skywalker compared Ajan Kloss with the planet Dagobah, where he trained years before with Yoda. He noted that the similarities between Dagobah and Ajan Kloss were that they were wet, warm, green and overflowing with life, but the main difference was that Ajan Kloss didn’t smell bad. The Ajara gas giant reflected sunlight onto the moon’s surface, allowing plants to gain sustenance even at night.