Kessik IV was the inhabited fourth planet of its star system and the site of a Federation colony.
B'Elanna Torres grew up on Kessik IV, where she and her mother Miral were the only Klingons. (VOY: "Faces")
John Torres later visited Kessik IV for some business in 2378. He was surprised at what the old Torres family house looked like. (VOY: "Author, Author")