What is a small rocky body that orbits the Sun called?

A small rocky body that orbits the Sun is classified as an asteroid. Asteroids are primarily found in the asteroid belt between Mars and Jupiter, but they can be located throughout the solar system. Unlike comets, which are composed mainly of ice and dust and often develop tails when close to the Sun, asteroids are made mainly of rock and metal.

Planets are significantly larger celestial bodies that orbit the Sun, and moons (or moonlets) are natural satellites that orbit planets, not the Sun directly. Therefore, while all of these celestial objects are part of our solar system, the defining characteristics of an asteroid, such as size and composition, distinguish it as the correct answer in the context of rocky bodies that orbit the Sun.