Cosmic Objects That Could Hit Earth: Real Threats and What Scientists Are Saying
101955 Bennu (1999 RQ36) is about 490 m in diameter and has a potential impact date of September 24, 2182 with a probability of about 1 in 2,700 (0.037%), though NASA says there is no chance of a hit for at least a century and a 1.4‑billion‑ton TNT impact could trigger an years‑long global “impact winter.” 1950 DA is roughly 1.3 km across and could hit on March 16, 2880 with a probability of about 1 in 34,500 (0.0029%), a Palermo value around −2.7, and an energy release of about 75 billion tons of TNT. 2023 TL4 is ~330 m