Largest Close Approaching Asteroid in a Century Passes by Earth

Largest Close Approaching Asteroid in a Century Passes by Earth

On the evening of Thursday, July 24, a football-field-sized asteroid passed close to the Earth with very little warning. The asteroid, designated 2019 OK, approached Earth at about 44,000 miles (71,000 kilometers) above the surface, one fifth the distance to the Moon. Other known asteroids have passed by closer, and a few very small asteroids have even impacted our atmosphere just after discovery, but none have been as large: 2019 OK is estimated to be 195-425 feet (60-130 meters) in size.

NASA CNEOS
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