The most massive object in our solar system is the Sun. It accounts for approximately 99.86% of the total mass of the entire solar system. It is a large, hot, glowing ball of gas that provides light and heat to the planets and other objects orbiting around it.
An example of an object that has less mass than Jupiter, which is the largest planet in our solar system, is Earth. Earth has a significantly smaller mass compared to Jupiter. While Jupiter is approximately 318 times more massive than Earth, Earth is still a relatively large and significant object in its own right.