>>This particular one is 100 years out.
The more telescopes we put on the job, the more we find. Trouble is we need to find them ALL. Chelyabinsk was not spotted. Most of the telescopes on the job are in the northern hemisphere. These objects are not easy to find. One was found a few weeks ago by an amateur astronomer. The big guns missed it.
The problem is not knowing how to build the telescopes, but funding the telescopes. I have long felt that since the discoverer gets to name the object discovered, there is a huge lost marketing opportunity here.
If Superbowl 2019 were brought to you by the discoverers of comet "Budweiser 2019", they might sell some more beer, and the rest of us might know about some potentially dangerous things out there.