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"Earth has captured a tiny object and pulled it into orbit.
The asteroid, known as 2020 CD3, is only the second asteroid known to orbit Earth. And while it won't last, this asteroid acts as a temporary mini-moon whirling around our planet."
--The article doesn't expand on why its' orbit is only temporary so I can only imagine that its' orbit is not stable for....reasons.
"In this case, they found a natural satellite that was pulled into Earth's orbit three years ago. "
Article does not tell WHEN the orbit may end and... will likely be pulled into collision vector with Earth?
"The asteroid is likely between 6.2 feet and 11.4 feet in diameter, the researchers said on Twitter."
VERY mini-me!
https://www.cnn.com/2020/02/26/world/earth-mini-moon-asteroid-scn-trnd/index.html [cnn.com]