New asteroid is Earth’s long-term ‘quasi-moon’

Astronomers have discovered another ancient cosmic companion to Earth.

New asteroid 2023 FW13 orbits the sun in sync with Earth, making it our planet’s “quasi-moon.” The space rock is in such an elaborate orbit that “it sweeps halfway March and halfway to Venus”, Sky & Telescope’s David Chandler reported (opens in a new tab) Friday (April 7).

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