Interesting fact: Ceres is the largest object in the asteroid belt and was the first dwarf planet to be visited by a spacecraft.
The answer: Ceres has a mass of approximately 9.39 × 10^20 kilograms, which is about 0.00015 times the mass of Earth.
Ceres is the largest object in the asteroid belt between Mars and Jupiter. Classified as a dwarf planet, it has a diameter of about 940 kilometers (about 584 miles). Its mass is roughly 9.39 × 10^20 kilograms (2.07 × 10^21 pounds), making it significantly less massive than Earth's Moon. Despite its relatively small size, Ceres' gravity is strong enough to shape it into a nearly spherical form. NASA's Dawn spacecraft studied Ceres up close, revealing a surface with water ice and possible cryovolcanic activity.
