Nivoch

From Memory Alpha, the free Star Trek reference

Nivoch is a planet in the Alpha Quadrant. In 2371, while stranded in the Delta Quadrant aboard the USS Voyager, Seska said that she had promised to meet her brother for his birthday on Nivoch. (VOY: "Prime Factors")

Considering Seska's true identity as a Cardassian agent, she may have been lying.