| There is a small periodic effect called nutation superimposed on precession caused by the motion of the perihelion of the Moon. |
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| The equator determined from the true equator of date by a transformation given by the theory of the nutation. |
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| In most cases, nutation is quickly damped by friction in the bearings, leaving uniform precession. |
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| The smooth, slow circling of a spinning top is precession, the uneven wobbling is nutation. |
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| Conventionally, precession denotes the sum of the secular terms and nutation denotes the sum of the periodic series and the Poisson series. |
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| This data will highlight the phenomenon known as nutation or the periodic oscillation of a planet's rotating axis. |
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| The principal causes of the slight irregular motion known as nutation are the Sun and Moon as they continually change location relative to one another. |
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| Because of aberration and nutation, the fullest possible precision of astronomical observations could not be achieved unless the observations were corrected for these effects. |
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| This likelihood is enhanced when the elasticity of the belt, by mimicking the action of muscles such as the transverse abdominis and multifidus, is pulling the joint into nutation. |
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| This year two improvements were made: the ephemeris were calculated by introducing precession and nutation models recommended in 2000 by the UAI and the ephemeris of Saturn satellites are resulting from a new theory. |
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| Applied on Mars, the technique would refine models of its internal constitution because the state and size of a planet's core affects its nutation period. |
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