The asteroid, called 2020 QG, flew within about 2,950km (1,830 miles) of Earth on Sunday - extremely close in asteroid terms.
In fact, according to asteroid trackers and a catalogue compiled by Sormano Astronomical Observatory in Italy, it's the closest ever recorded.
The asteroid approached undetected from the direction of the sun.
Confirming the asteroid flew so close to Earth that it broke records: "Yesterday's close approach is closest on record, if you discount a few known asteroids that have actually impacted our planet."
Telescope observations indicate the object is between 6ft (2m) and 18ft (5.5m) wide, making it the size of a vehicle - somewhere between a small car and an extended-cab pickup truck
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