4-X-Alpha-4 was an extragalactic star system, being located outside of the Seventh Galaxy, as identified by Romana II. It contained the Movellan homeworld, (TV: Destiny of the Daleks) Movella. (AUDIO: Alien Heart)
As recorded in the Matrix, the Daleks and Movellans were engaged in war in 4-X-Alpha-4 in 4949. (AUDIO: Neverland)