What does axial precession mean?

Definitions for axial precession
ax·i·al pre·ces·sion

This dictionary definitions page includes all the possible meanings, example usage and translations of the word axial precession.

Wikidata

  1. Axial precession

    In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In particular, it refers to the gradual shift in the orientation of Earth's axis of rotation, which, similar to a wobbling top, traces out a pair of cones joined at their apices in a cycle of approximately 26,000 years. The term "precession" typically refers only to this largest secular motion; other changes in the alignment of Earth's axis – nutation and polar motion – are much smaller in magnitude. Earth's precession was historically called the precession of the equinoxes, because the equinoxes moved westward along the ecliptic relative to the fixed stars, opposite to the motion of the Sun along the ecliptic. This term is still used in non-technical discussions, that is, when detailed mathematics are absent. Historically, Hipparchus has been credited with discovering precession of the equinoxes, although evidence from cuneiform tablets suggest that his statements and mathematics relied heavily on Babylonian astronomical materials that had existed for many centuries prior. The exact dates of his life are not known, but astronomical observations attributed to him by Ptolemy date from 147 BC to 127 BC.

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Numerology

  1. Chaldean Numerology

    The numerical value of axial precession in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of axial precession in Pythagorean Numerology is: 8


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"axial precession." Definitions.net. STANDS4 LLC, 2024. Web. 1 Mar. 2024. <https://www.definitions.net/definition/axial+precession>.

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