Klendth
Klendth was an inhabited planet where the Loonkerian outpost was located.

Sometime prior to 2286, a piece of bioengineering technology, known as the universal atmospheric element compensator, was made at the Loonkerian outpost on Klendth.

Spock was asked about this technology in his memory test on  following his "rebirth" on  several months earlier. ()

de:Klendth
Planets