Lunisolar precession is about 500 times greater than planetary precession.
2.
This so-called planetary precession shift amounts to a rotation of the ecliptic plane of 0.47 seconds of arc per year ( more than a hundred times smaller than lunisolar precession ).
3.
Planetary precession ( an advance ) is due to the small angle between the gravitational force of the other planets on Earth and its orbital plane ( the ecliptic ), causing the plane of the ecliptic to shift slightly relative to inertial space.
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