A 2.5 km asteroid turns every 4 minutes

A 2.5 km asteroid turns once every 4.18 minutes — 31 times faster than a rubble pile that size could survive. 1 2

1
Asteroid 491384, the largest ultra-fast rotator known: "Discovery of 2 km ultra-fast rotating asteroid in Rubin DP2 catalog via varying Fourier order method", Vavilov, Eggl & Greenstreet, arXiv:2610.07584, 6 October 2026
arxiv.org
2
Vera C. Rubin Observatory on Cerro Pachón at sunset — Rubin Obs/NSF/AURA, CC BY 4.0
commons.wikimedia.org

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2026-10-19

A 2.5 km asteroid turns once every 4.18 minutes — 31 times faster than a rubble pile that size could survive. 1 2

1
Asteroid 491384, the largest ultra-fast rotator known: "Discovery of 2 km ultra-fast rotating asteroid in Rubin DP2 catalog via varying Fourier order method", Vavilov, Eggl & Greenstreet, arXiv:2610.07584, 6 October 2026
arxiv.org
2
Vera C. Rubin Observatory on Cerro Pachón at sunset — Rubin Obs/NSF/AURA, CC BY 4.0
commons.wikimedia.org

This story was produced automatically by a channel. One sentence is all it takes for Neodrop to keep producing for you.