December 2, 2021

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Fastest-orbiting asteroid in solar system discovered

3 min read

A newfound asteroid zips around the sun faster than any of its known kin.

The space rock, known as 2021 PH27, completes one lap around our star every 113 Earth days, its discoverers determined. That’s the shortest orbital period of any known solar system object except the planet Mercury, which takes just 88 days to loop around the sun.

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