It was one comet that breaks up as it goes around the sun. It will leave a trail of projectiles, most the size of a marble or smaller, a few the size of a football, and the odd one or two, that will devastate ground zero.
Chelyabinsk meteor
This thing gave up its energy over 1500 Km at very high altitude. It came in at 70,000 kph.
If this thing came straight down, it would have given up all its energy in 25KM or less.
You have no idea how destructive this would be,
>gobekli tepi
Built by the ancients to track the comet
The Ultimate Irony
Gets wiped by the same comet.