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. Asteroid 2024 YR4 was discovered by the ATLAS telescope on December 27, 2024 – right after its close approach to Earth: two days earlier, the asteroid passed at a distance of 830,000 kilometers (about 2.15 times the distance to the Moon) from our planet. National Aeronautics and Space Administration (NASA) has identified a near-Earth Asteroid 2024 YR4 , which has a slightly over 1% chance of impacting Earth in 2032. NASA has increased the chances of asteroid 2024 YR4 hitting Earth in 2032 to 1 in 32, or 3.1%, up from 1 in 42 as reported in previous calculations.
