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Space
Space
Science
Sharmila Kuthunur

Newfound asteroid is a long-term 'quasi-moon' of Earth

The newfound space rock 2023 FW13 has an orbit that keeps it as a constant companion of Earth, like that of 2016 HO3, which is shown here.

Astronomers have discovered yet another ancient cosmic companion of Earth.

The newfound asteroid 2023 FW13 circles the sun in sync with Earth, making it our planet's "quasi-moon." The space rock is in an orbit so elaborate that "it sweeps out halfway to Mars and in halfway to Venus," Sky & Telescope's David Chandler reported Friday (April 7).

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