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Here’s What We Know About Earth’s Second Detected ‘Minimoon’ – Gizmodo

Spotted earlier this year, asteroid 2020 CD3 is only the second temporary natural satellite, or minimoon, ever detected around Earth.

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Spotted earlier this year, asteroid 2020 CD3 is only the second temporary natural satellite, or minimoon, ever detected around Earth. It didnt stick around for very long, but we learned some interesting things about our temporary companion and why a mission to intercept similar objects is a good idea.
Asteroid 2020 CD3 was first spotted by astronomers from the Catalina Sky Survey at the University of Arizona on February 15, 2020. Some preliminary calculations were made about its size and orbit,…

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