Are the exact measurements known of how big a meteor needs to be to breach the atmosphere and land on Earth versus burn up in it and disappear?

Question

Are the exact measurements known of how big a meteor needs to be to breach the atmosphere and land on Earth versus burn up in it and disappear?

In: Planetary Science

Answer 1

I can’t find the numbers, but things larger than 100 m can usually make it to the ground in one piece. Smaller things, probably down to somewhere around a 20 cm, will tend to break up in the lower atmosphere, and land on the ground as fragments. Anything smaller will burn up entirely.