barycenter
/ˈbærɪsɛntər/Definitions
1. noun
The center of mass of a system of celestial bodies, such as a binary star or a planet and its moons.
“The astronomer calculated the barycenter of the Earth-Moon system to understand their orbital dynamics.”
2. noun
In general, the center of mass of any system of objects or forces.
“The engineer studied the barycenter of the bridge to ensure it could withstand heavy loads.”