Astronomers Detect Smallest Asteroids in Main Belt Using Infrared Data

MIT researchers leverage advanced imaging techniques and the James Webb Space Telescope to identify 138 decameter-sized asteroids, enhancing planetary defense capabilities.

Researchers have discovered 138 previously undetected asteroids in the main belt, ranging from 10 meters to several stadiums in size, the smallest ever observed in this region.
The team utilized the James Webb Space Telescope's infrared capabilities and a 'shift and stack' image processing technique to detect these faint, distant objects.
This breakthrough allows for earlier identification and precise tracking of small asteroids, some of which may become near-Earth objects, critical for planetary defense efforts.
The study highlights that many small asteroids are likely formed through collisional cascades, breaking down larger asteroids below 100 meters in size.
This innovative approach repurposes data originally collected for exoplanet research, showcasing the potential for unexpected discoveries using advanced technology and creative methodologies.