Asteroid 2024 yr4: This image shows Webb’s recent observation of

This image shows Webb’s recent observation of the asteroid 2024 YR4 using both its NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument). Data from NIRCam shows reflected light, while the MIRI observations show thermal light. This Giant Asteroid Heading Towards Earth Is Top On NASA-ESA Risk List — All About 2024 YR4 NASA and ESA are monitoring asteroid 2024 YR4 , with an estimated size of up to 328 feet and a 1.2% chance of impacting Earth. Learn about the latest estimates and news on asteroid 2024 YR4 , which has a very low impact probability of 0.001% on 22 December 2032. See how ESA and other agencies are monitoring and studying this near-Earth object. The threat from space rock 2024 YR4 has surpassed that of Apophis, an asteroid feared by scientists 20 years ago. The danger remains low, but experts are estimating the damage that could be done.