Rotation2. ___Revolution 3. ___Precession4. ___Nutation5. ___BarycenterA. Day and Night (24 hrs)B. A Year (365 days)C. change in direction of the axis, but without any change in tilt—this changes the stars near (or not near) the Pole D. wobbling around the axis (This occurs over an 18 year period)E. the center of mass where two or more celestial bodies orbit each other(This is the point about which the Earth and Moon orbit as they travel around the Sun.)