Klaestron IV is the homeworld of the Klaestron race. (DS9: "Dax")
- The image of the surface of Klaestron IV shown in this episode is the same image used to show what Angel I looked like at night in (TNG: "Angel One").
In 2371, Julian Bashir visited Klaestron IV to learn a new treatment for burn victims. According to him, the technology had to be seen to be believed. (DS9: "Second Skin")