Nu Chalcedonis was a star in the Triangle. In the mid-22nd century, the Nu Chalcedonis system was the site of a battle of the Earth-Romulan War. (FASA RPG: The Romulan War) The name of this star suggests that it was part of a constellation not visible from Earth during at least the early 21st century. Given the name's Greek roots, it's possible that the constellation may be visible from Alpha Centauri VII, which was seeded by the Preservers with humans from Greece in the 3rd century B.C.E. (The Worlds of the Federation)