The Vera C. Rubin Observatory detected asteroid 2025 MN45 in early 2026 using survey data.
The record-breaking spin offers new insight into asteroid strength and formation.

BulletsIn

•  Fastest spin ever recorded for a large asteroid
•  Asteroid named 2025 MN45
•  About 710 metres wide, over 500-metre category
•  Completes one full rotation every 1.88 minutes
•  Located in the main asteroid belt
•  Found during survey of nearly 2,000 asteroids
•  Only 19 identified as superfast rotators
•  Extreme speed indicates solid rock structure
•  Challenges common rubble-pile asteroid theory