Asteroid

Solar System’s Fastest-Orbiting Asteroid Discovered

New Asteroid, Sun and Mercury.jpg

The Sun has a new neighbor that was hiding in plain twilight. An asteroid that orbits the Sun in just 113 days—the shortest known orbital period for an asteroid and second shortest for any object in our Solar System after Mercury—was discovered by Carnegie’s Scott S. Sheppard in evening twilight images taken by Brown University’s Ian Dell'Antonio and Shenming Fu.

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