Vera C. Rubin Observatory has discovered the fastest-ever spinning asteroid with a diameter over half a kilometer

https://noirlab.edu/public/news/noirlab2601/

3 Comments

  1. That would produce a “spin gravity” acceleration of 1.1 m/s^2 at the surface, while the force of gravity would produce a downward acceleration of less than 1 mm/s^(2), so this is definitely a solid object.

  2. >The fastest-spinning main-belt asteroid identified, named 2025 MN45, is 710 meters (0.4 miles) in diameter and it completes a full rotation every 1.88 minutes.