Vandor system
From Memory Alpha, the free Star Trek reference
The Vandor system was an inhabited binary star system located in a remote part of the galaxy, consisting of a B class giant and a pulsar. The system was within the vicinity of Federation space.
In 2349, the Vandor system was selected by Dr. Paul Manheim as the location for his experiments into time, as the dense gravity of the pulsar was vital for his work. He based his laboratory on a planetoid in the system, Vandor IV.
Fifteen years later, the starship USS Enterprise-D visited this system upon receiving a distress call from Jenice, the wife of Dr. Paul Manheim. The ship's crew rescued both survivors, and isolated the origin of the Manheim Effect. (TNG: "We'll Always Have Paris")
