AstroBall

After I installed RSS and RO I noticed that asteroids stopped showing up in the Tracking Station. Is there a way to have them spawning again, or do I need to detect them by other means. Also, how can I add a specific asteroid if I know the orbit characteristics? A cool mod will be one that can take as input an asteroid Ephemerid file, that can be downloaded from Horizons JPL, and create that asteroid in the solar system. Is there such a mod yet? Thanks.