Asteroid 2024 BX1 crashed into Earth on January 21, setting a new record for rotating faster than any near-Earth object ever recorded. The asteroid turned into a fireball and exploded in the sky over Berlin, Germany. Scientists were able to detect the asteroid about three hours before impact, which is unusual for small asteroids colliding with Earth.
Small asteroids like 2024 BX1 tend to rotate faster than larger ones due to their compact nature and endogenous strength. One of the unique features of this asteroid is its speed of 50,000 km/h and its rotation time of 2.588 seconds. This rotation speed is unprecedented for a near-Earth asteroid, surpassing the previous record held by asteroid 2020 HS7.
Researchers at the University of Central Florida led by Maxime Devogèle developed a new technique using images to determine the rotation speed of asteroids as they approach Earth. They adjusted the aperture size of the camera to capture the asteroid’s streak of light against the starry sky. The research team found that asteroid 2024 BX1 rotates every 2.588 seconds, equivalent to 33,000 rotations per day.
Understanding the rotation speeds of asteroids near Earth is crucial for minimizing the risks they pose to people and infrastructure. By studying these features, scientists can better prepare for potential asteroid impacts and their potential impacts on Earth.