Earth bids farewell to its temporary 'mini moon' that is possibly chunk of our actual moon
mini moon" for the past two months. The harmless space rock will peel away on Monday, overcome by the stronger tug of the sun's gravity. But it will zip closer for a quick visit in January.
NASA will use a radar antenna to observe the 33-foot (10-metre) asteroid then. That should deepen scientists' understanding of the object known as 2024 PT5, quite possibly a boulder that was blasted off the moon by an impacting, crater-forming asteroid.
While not technically a moon — NASA stresses it was never captured by Earth's gravity and fully in orbit — it's «an interesting object» worthy of study.
The astrophysicist brothers who identified the asteroid's «mini moon behaviour,» Raul and Carlos de la Fuente Marcos of Complutense University of Madrid, have collaborated with telescopes in the Canary Islands for hundreds of observations so far.
Currently more than 2 million miles (3.5 million kilometers) away, the object is too small and faint to see without a powerful telescope. It will pass as close as 1.1 million miles (1.8 million kilometers) of Earth in January, maintaining a safe distance before it zooms farther into the solar system while orbiting the sun, not to return until 2055. That's almost five times farther than the moon.
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