Am I the only one who didn't know this?
To put this is perspective: Take an NBA basketball and place a tennis ball 24 feet away - that's the moon. The asteroid passed at 34,900 miles per hour in between the moon and earth, (about 4 feet from the tennis ball).
Read more here: Asteroid 2005 YU55 to find where to look. 'Ole YU55 is the size of an aircraft carrier.
With it’s size and speed, this asteroid would make a crater on earth 4 miles across, 1,700 feet deep and create a magnitude 7 earthquake. That would have ruined my day.