Bayard's Planet on a star chart
Bayard's Planet was a planet. This planet was located less than 120 light years from the nova Phi Puma. In 2165, a concussion ring from Phi Puma had reached this planet.
A star chart from the USS Enterprise-D library computer depicted the path of the concussion ring. In 2364, this chart was seen when Lieutenant Commander Data did research into past instances of polywater intoxication, when Portal 63 on Delphi Ardu IV accessed the starship's library, when Lore accessed the starship's library, and, finally, when Data investigated the possibility of a conspiracy in the upper echelons of Starfleet. (TNG: "The Naked Now", "The Last Outpost", "Datalore", "Conspiracy", production art)
This star chart was drawn by Rick Sternbach for the Star Trek Spaceflight Chronology in the late 1970s. This chart was found on page 151.