The location of Lalande 21185 on a star chart
Lalande 21185 was a star. It was located near Sol, Alpha Centauri, Sirius, and Tau Ceti.
On several occasions in 2364, viewscreen readouts aboard the USS Enterprise-D showed the location of Lalande 21185, in the form of charts from the Enterprise-D library computer. (TNG: "The Naked Now", "The Last Outpost", "Conspiracy")
This star chart naming stars within 20 light years of Sol was drawn by Rick Sternbach for the Star Trek Spaceflight Chronology in the late 1970s. Found on page 77, this chart showed Earth commercial and exploration routes after the use of warp drive began. There were no commercial or exploration routes to this star.