Nu Chalcedonis was a star system, located somewhere in the space of the galaxy's Alpha or Beta Quadrants. In the 22nd century, this location was considered part of the Triangle sector, situated at the borders of the expanding Coalition of Planets and the Romulan Star Empire. The Nu Chalcedonis system's orbit was the site of the Battle of Nu Chalcedonis during the Earth-Romulan War, on reference stardate 1/0712.25. Starfleet's 12th Strike Wing, with three full starship squadrons, came upon a Romulan-crewed convoy in a disorganized state near an allied rendezvous point. The Starfleet forces decisively defeated the Romulans, destroying all their vessels while taking only light casualties. (FASA RPG module: The Romulan War)

The stellar notation using the Greek language letter "nu" indicates that there might be a star group or constellation of some sort named "Chalcedonis", of which Nu Chalcedonis would logically be indicated to be the thirteenth most prominent star or system.
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