Beta Mahoga systemedit

From Memory Alpha, the free Star Trek reference

The Beta Mahoga system was a star system somewhere in the region of sectors 21538 to 23079. Along with the Beta Cygni system, Beta Mahoga was the site of a USS Fearless planetary mapping survey in the 2360s, according to a Starship Mission Status report. (Star Trek: The Next Generation set decoration)

The assignment of the Fearless was not mentioned on screen, but rather was seen on a viewscreen chart on a bridge computer station.