Gravitomagnetic clock effect

In physics, the gravitomagnetic clock effect is a deviation from Kepler's third law that, according to the weak-field and low-velocity approximation of general relativity, will be suffered by a particle in orbit around a (slowly) spinning body, such as a typical planet or star. == Explanation == According to general relativity, in its weak-field and low-velocity linearized approximation, a slowly spinning body induces an additional component of the gravitational field that acts on a freely-falling test particle with a non-central, gravitomagnetic Lorentz-like force.

Source: Wikipedia — Gravitomagnetic clock effect (CC BY-SA 4.0)