The asteroid belt was not created until approximately 2264 (around 2364 some maps showed a planet in the asteroid belt where none existed). According to Denning, the system was relatively quiet (with only the odd prospector and occasional "Moses") until approximately 2334 when miners started setting up in the area. In 2364, a Khulli used the system to frame a Klingon for a terrorist attack. (TNGvideo game: The Transinium Challenge)