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The Earth goes through one complete precession cycle in a period of approximately 25,800 years, during which the positions of stars as measured in the equatorial coordinate system will slowly change; the change is actually due to the change of the coordinates. Over this cycle the Earth's north axial pole moves from where it is now, within 1° of Polaris, in a circle around the ecliptic pole, with an angular radius of about 23.5 degrees (exactly 23 degrees 27 arcminutes [1]). The shift is 1 degree in 180 years, where the angle is taken from the observer, not from the center of the circle.

[en.wikipedia.org]