Fast-spinning asteroid 2025 MN45 rewrites rotation record

Artist’s concept of the fast-spinning asteroid 2025 MN45. It’s the fastest-rotating asteroid with a diameter greater than 500 meters (0.3 miles) that scientists have yet found. It’s 710 meters (0.44 miles) in diameter. The asteroid resides in the asteroid belt and completes a full rotation every 1.88 minutes. The NSF–DOE Vera C. Rubin Observatory made the discovery. And that’s the sun and Jupiter in the distance. Image via NSF–DOE Vera C. Rubin Observatory/ NOIRLab/ SLAC/ AURA/ P. Marenfeld.

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