Won't they become meteoroids and no longer be asteroids at impact?

Size?

Base rate of asteroids of any size hitting the earth is very high, this is likely.

@WXTJ Per Wikipedia an asteroid is at least 1 meter across. How often are we hit by one of those?

@Jonagold https://catalina.lpl.arizona.edu/faq/how-often-do-asteroids-strike-earth

"Objects the size of the smallest asteroids, ~1-meter across (3 feet) strike a few times per year."

Not sure how well-documented these events are though?

@SaviorofPlant some are discovered before impact: https://en.wikipedia.org/wiki/List_of_predicted_asteroid_impacts_on_Earth

@Predictor specifically 2004 YR4 or any asteroid?