Asteroid
The dwarf planet Ceres is by far the largest asteroid, with a diameter of . The next largest are 4 Vesta and 2 Pallas, both with diameters of just over . Vesta is the only main-belt asteroid that can, on occasion, be visible to the naked eye. On some rare occasions, a near-Earth asteroid may briefly become visible without technical aid; see 99942 Apophis.
Near-Earth object
The second-largest observed impact after the Tunguska meteor was a 1.1-megaton air blast near the Prince Edward Islands off the coast of South Africa in 1963, which was detected only by infrasound sensors. The third-largest but most-observed impact was the Chelyabinsk meteor of February 15, 2013. A asteroid exploded with the equivalent blast yield of 400–500 kilotons. The calculated orbit of the pre-impact asteroid is similar to that of Apollo asteroid 2011 EO40, making the latter the meteor's possible parent body.