Asteroid 2019 OK Missed Earth By About 40,000 Miles
On July 25, an asteroid the size of a football field flew by Earth, coming within 40,000 miles of our planet’s surface during its closest approach – about one fifth of the distance to the Moon. The 100 yard-wide asteroid dubbed '2019 OK' was detected just days before it passed Earth, although archival records from sky surveys show it had previously been observed but wasn't recognized as a near-Earth asteroid.