The planet Ba'ku is located in the Briar Patch in Sector 441 of the Beta Quadrant. It is the homeworld of the Ba'ku, a humanoid civilization. (TNG movie: Insurrection) The world was once home to a much more advanced race who left nothing behind but ruins. (TNG video game: Hidden Evil) Ba'ku became a Federation member world prior to 2378. (ST reference: Star Charts)