敬意を表して Respect for celestial motion of the Earth
In addition to the Earth's rotation and revolution, the name pays tribute to the many cycles of celestial motion of the Earth, including precession, which is the rotational motion of the axis of rotation, changes in the tilt of the axis of rotation, changes between a circle and an ellipse in the orbit of the Earth, nutation due to the gravity of the Sun and Moon, and free nutation due to the Earth's ellipsoidal shape.