What is the largest asteroid?
List of exceptional asteroids
The largest asteroids with an accurately measured mass, due to the fact that they have been (and are being) studied by the probe Dawn, are 1 Ceres with a mass of 939.3 ± 0.5×1018 kg, and 4 Vesta at 259.076 ± 0.001×1018 kg. The third-largest asteroid with an accurately measured mass, due to the fact that it has moons, is 87 Sylvia at 14.78 ± 0.06×1018 kg.
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.