Gravesworld was a remote formerly inhabited ringed planet. The nearest starbase to this planet was Starbase 6.

In the mid-24th century, Dr. Ira Graves lived and worked here, along with his assistant Kareen Brianon, until his death in 2365. The Federation starship USS Enterprise-D transported Miss Brianon to Starbase 6. (TNG: "The Schizoid Man")

In 2371, the location of Gravesworld was labeled in the star chart Data and Picard were studying in stellar cartography aboard the USS Enterprise-D. (Star Trek Generations, okudagram)

The planet model first used here for Gravesworld would later be used for an unnamed planet ("The Dauphin") and Mariposa ("Up The Long Ladder").