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And so this is also happening:
More at https://www.theatlantic.com/science/archive/2020/02/mini-moon-earth/607171/
This is going to sound preposterous, but I promise it’s true: Earth has another moon.
It is not the kind that will illuminate the night sky. It’s invisible to the naked eye and too tiny to do any classic moon moves, like tugging on the planet’s oceans. But it’s there, orbiting the Earth, accompanying us on our journey around the sun.
A pair of astronomers discovered the miniature moon on the night of February 15. It showed up in the nightly observations of the Catalina Sky Survey, a NASA-funded project in Arizona. The survey is designed to study asteroids and comets near Earth, the kind that could potentially menace the planet if they got too close. To Kacper Wierzchos and Teddy Pruyne, the mystery object appeared as a few pixels of light moving quickly across a dusky, fixed background.
Researchers at other observatories and amateur astronomers around the world raced to monitor the newcomer in the sky, collecting as much data as they could. When they calculated its orbit, they were baffled. The object wasn’t a newcomer at all. So far, their work suggests that the object has been moving around us, gravitationally bound to the Earth, for at least a year but probably closer to three. We’ve had a tiny new moon all this time, and we didn’t know about it.
More at https://www.theatlantic.com/science/archive/2020/02/mini-moon-earth/607171/