Final answer:
Ceres is the largest asteroid in the solar system and is larger than Pluto and Mercury. It is about the size of a large jovian moon.
Step-by-step explanation:
The largest asteroid in the solar system is Ceres, which has a diameter just less than 1000 kilometers. It is considered one of the dwarf planets, like Pluto. Ceres is larger than Pluto and Mercury, making it larger than any of the other solar system worlds. It is about the same size as a large jovian moon.