Asteroid Size And Speed 2024. Asteroid 2024 on, sized roughly 720 feet in diameter, will safely pass earth today at a distance of 997,793 kilometers—more than 2.5 times the distance between the earth and. October 24, 2024 / 3:08 pm edt / cbs news.

Using its advanced tech, nasa says as many as two asteroids may fly past earth by a close margin tomorrow, march 27. The size of the upcoming asteroid.