Carr's Planet was a namesake planet in the Alpha or Beta Quadrant.
In 2371, its position was labeled on a star chart in the guidance system S/COMS panel on aboard the Amargosa observatory. (Star Trek Generations)
This location was only mentioned in writing.
In August 2024, this panel was put up for auction in the Entertainment Memorabilia Live Auction: Los Angeles Summer 2024 by Propstore Auction. [1]