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.
Mario Jurić
Together with prolific amateur astronomer Korado Korlević, Jurić has co-discovered 125 asteroids, and one comet, 183P/Korlević-Jurić. He took part in discovery of the Sloan Great Wall, at the time the largest known structure in the Universe. His co-discovery, the Koronian asteroid 22899 Alconrad is one of the smallest known binary asteroids in the main-belt.