JWST Observations of Potentially Hazardous Asteroid 2024 YR4
收藏DataCite Commons2025-10-02 更新2026-05-03 收录
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http://dataverse.jpl.nasa.gov/citation?persistentId=doi:10.48577/jpl.KSJ8WI
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The destructive power of an impacting asteroid is primarily es>mated by knowledge of its size. Asteroid 2024 YR4 reached a peak 2032 impact probability with Earth of 3%, motivating a desire to determine its size. Owing to its infrared capabilities, JWST is uniquely suited for such assessment, especially for decameter-scale objects (Burdanov et al. 2025). We used JWST to observe 2024 YR4 and find a diameter of 60± 7 m. This size range corresponds to an albedo for 2024 YR4 of 8-18%, consistent with observation that it is an S-type asteroid (International Asteroid Warning Network), if at the low-albedo end of that asteroid taxon. Future observations through May 2025 will help further refine the asteroid’s thermophysical model.
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Root
创建时间：
2025-10-01
