In August 2024, scientists observed a small "minimoon" named 2024 PT₅ caught briefly in Earth’s gravity. This space rock, about the size of a car, was spotted by the Hawaiian telescope ATLAS and will stay in Earth’s orbit only temporarily. Researchers are curious about its origins, as it could be a piece of an asteroid or even lunar debris. Studying these minimoons helps scientists better understand the nature and origins of such small, passing objects near Earth.
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Credit: Bolin, B. et al, preprint arxiv The discovery and characterization of minimoon 2024 PT5