The location of Wolf 359 on a star chart
The Wolf system was a star system. Its primary was Wolf 359. This system was located less than 20 light years from the Sol system.
In 2364, the location of Wolf 359 was labeled on a star chart of a stellar neighborhood with Sol at the center. This chart was filed in the USS Enterprise-D library computer. (TNG: "The Naked Now", display graphic)
In 2367, this system was the site of the historic Battle of Wolf 359. (TNG: "The Best of Both Worlds, Part II")
In 2371, the location of Wolf 359 was labeled in the star chart Data and Picard were studying in stellar cartography aboard the USS Enterprise-D. (Star Trek Generations, display graphic)