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Asteroid 2025 MN45
January 15 , 2026
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- The asteroid 2025 MN45 is the fastest-spinning asteroid of its size ever observed.
- It measures about 710 metres (2,300 feet) in diameter and rotates once every 113 seconds.
- The asteroid is located in the main asteroid belt between Mars and Jupiter.
- It was discovered using data from the Vera C. Rubin Observatory’s LSST (Legacy Survey of Space and Time) Camera.
- The extreme rotation suggests that 2025 MN45 has solid internal strength, unlike most “rubble pile” asteroids.
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