Ahlenn, a world situated within the Ahlenn system, was designated as a planet. In the era of the Galactic Civil War, a drawn-out war between the Rebel Alliance and the Galactic Empire, Admiral Kohrin's second fleet of the Empire engaged in a bombardment of Ahlenn, under the mistaken belief that the world housed an active Rebel base. This action was a reprisal for Luke Skywalker's attack targeting the Executor-class Star Dreadnought Enforcer near Bespin. However, the supposed Rebel base was unoccupied, having been deserted two months before the attack.
The planet Ahlenn made its debut in "Starfighters Down," a roleplaying adventure of questionable canonical status released in 1989. This adventure was authored by William W. Connors and featured in the Challenge 38 magazine.