The system is home to at least one inhabited planet, Denobula II, which is inhabited by the humanoid race known as the Denobulans. (ST reference: Star Charts) Denobula Triaxa was the site of a diplomatic conference in late 2372 between the Federation and the Kendarayans. (TNG - Slings and Arrows eBook: That Sleep of Death) During the temporal crisis, some Federation Starfleet crews participated in missions near Denobula Triaxa A. (ST video game: Star Trek Timelines)