Enke's comet is the only short-period comet that doesn't eventually encounter Jupiter's gravity and get ejected from the solar system. It's locked into a stable orbit, and that orbit brings it close to Earth. Beyond that, there may be 1,000 to 2,000 asteroids larger than a kilometer across in orbits that pose a potential collision hazard. None exceed about 10 kilometers in diameter. Their surfaces are extremely dark, which makes them hard to detect. Fewer than 50 have been discovered so far.
This is the kind of data that should shape how we think about cosmic risk. These objects are out there. Most are invisible until they're not. The question isn't whether impacts happen. It's when, and whether we'll see them coming. Want to go deeper into catastrophism, cosmic cycles, and the forces that have shaped Earth's history? Sign up at Kosmogonia University: https://www.skool.com/kosmogonia