Dar Klatus, formally Dar Klatus A Prime or Tau Arucanis 50 A Prime, is the first planet of the Dar Klatus system and the homeworld of the Pe'khdar species. The planet orbits between the star Dar Klatus A and its binary companion Dar Klatus B. It was formerly a Class M world, but in approximately 2115 the Pe'khdar species all but destroyed itself in a nuclear war that sent millions of tons of radioactive dust into the atmosphere, causing a nuclear winter. Most of the vegetation died, and the few surviving Pe'khdar faced starvation as their world turned to radioactive wasteland.