👉 In celestial mechanics, an "orbiter" refers to a small body that orbits another larger body. In this context, it is often used in conjunction with other terms such as planets, moons, or comets. The concept of an orbiter arises from Newton's laws of universal gravitation and the idea of the gravitational pull exerted by a celestial body on its surrounding objects. For example, a planet orbits around another star (the "parent" object) at a constant speed and distance.