Matsushima's formula is used in the field of celestial mechanics and astrophysics, particularly in the context of estimating the gravitational influence of celestial bodies on the orbits of other objects. It provides a way to calculate the potential influence of a source mass on the motion of surrounding objects. The formula is often expressed in terms of the gravitational potential or force acting on an object due to a celestial body, taking into account both the mass of the body and its distance from the object in question.
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