Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Axial_precession> ?p ?o }
- Axial_precession abstract "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 can refer 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 part of the 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 yearly motion of the Sun along the ecliptic. This term is still used in non-technical discussions, that is, when detailed mathematics are absent. Historically, the discovery of the precession of the equinoxes is mostly attributed to Hellenistic-era (2nd century BC) astronomer Hipparchus, although there are alternative suggestions claiming earlier discovery.With improvements in the ability to calculate the gravitational force between and among planets during the first half of the nineteenth century, it was recognized that the ecliptic itself moved slightly, which was named planetary precession, as early as 1863, while the dominant component was named lunisolar precession. Their combination was named general precession, instead of precession of the equinoxes.Lunisolar precession is caused by the gravitational forces of the Moon and Sun on Earth's equatorial bulge, causing Earth's axis to move with respect to inertial space. 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. Lunisolar precession is about 500 times greater than planetary precession. In addition to the Moon and Sun, the other planets also cause a small movement of Earth's axis in inertial space, making the contrast in the terms lunisolar versus planetary misleading, so in 2006 the International Astronomical Union recommended that the dominant component be renamed, the precession of the equator, and the minor component be renamed, precession of the ecliptic, but their combination is still named general precession. Many references to the old terms exist in publications predating the change.".
- Axial_precession thumbnail Earth_precession.svg?width=300.
- Axial_precession wikiPageExternalLink nph-bib_query?bibcode=1977A%26A....58....1L&db_key=AST&data_type=HTML&format=&high=46303c7cf308007.
- Axial_precession wikiPageExternalLink nph-bib_query?bibcode=1994A%26A...282..663S&db_key=AST&data_type=HTML&format=&high=46303c7cf308007.
- Axial_precession wikiPageExternalLink node74.html.
- Axial_precession wikiPageExternalLink ?pa=content&sa=viewDocument&nodeId=962&bodyId=1147.
- Axial_precession wikiPageExternalLink aa03_412_P03.pdf.
- Axial_precession wikiPageExternalLink cm06_94_PEWG.pdf.
- Axial_precession wikiPageExternalLink precession.htm.
- Axial_precession wikiPageID "72576".
- Axial_precession wikiPageLength "57380".
- Axial_precession wikiPageOutDegree "229".
- Axial_precession wikiPageRevisionID "675572188".
- Axial_precession wikiPageWikiLink 1,000,000,000.
- Axial_precession wikiPageWikiLink 2012_phenomenon.
- Axial_precession wikiPageWikiLink 30th_century_BC.
- Axial_precession wikiPageWikiLink Age_of_Aquarius.
- Axial_precession wikiPageWikiLink Agrippa_(astronomer).
- Axial_precession wikiPageWikiLink Al-Battani.
- Axial_precession wikiPageWikiLink Aldebaran.
- Axial_precession wikiPageWikiLink Almagest.
- Axial_precession wikiPageWikiLink Ancient_Egypt.
- Axial_precession wikiPageWikiLink Ancient_Greece.
- Axial_precession wikiPageWikiLink Ancient_Greek_astronomy.
- Axial_precession wikiPageWikiLink Ancient_Greeks.
- Axial_precession wikiPageWikiLink Angular_eccentricity.
- Axial_precession wikiPageWikiLink Angular_momentum.
- Axial_precession wikiPageWikiLink Angular_velocity.
- Axial_precession wikiPageWikiLink Annum.
- Axial_precession wikiPageWikiLink Antikythera_Mechanism.
- Axial_precession wikiPageWikiLink Antikythera_mechanism.
- Axial_precession wikiPageWikiLink Apex_(geometry).
- Axial_precession wikiPageWikiLink Apogee.
- Axial_precession wikiPageWikiLink Apparent_magnitude.
- Axial_precession wikiPageWikiLink Apparent_retrograde_motion.
- Axial_precession wikiPageWikiLink Apsis.
- Axial_precession wikiPageWikiLink Arab.
- Axial_precession wikiPageWikiLink Arabs.
- Axial_precession wikiPageWikiLink Arcsecond.
- Axial_precession wikiPageWikiLink Aristarchus_of_Samos.
- Axial_precession wikiPageWikiLink Aristillus.
- Axial_precession wikiPageWikiLink Aristyllus.
- Axial_precession wikiPageWikiLink Astrological_age.
- Axial_precession wikiPageWikiLink Astronomy.
- Axial_precession wikiPageWikiLink Astronomy_in_medieval_Islam.
- Axial_precession wikiPageWikiLink Astronomy_in_the_medieval_Islamic_world.
- Axial_precession wikiPageWikiLink Autumnal_equinox.
- Axial_precession wikiPageWikiLink Axial_tilt.
- Axial_precession wikiPageWikiLink Ayana.
- Axial_precession wikiPageWikiLink Babylonian_astronomy.
- Axial_precession wikiPageWikiLink Babylonian_calendar.
- Axial_precession wikiPageWikiLink Beta_Ursae_Minoris.
- Axial_precession wikiPageWikiLink Bhāskara_II.
- Axial_precession wikiPageWikiLink Brady_Haran.
- Axial_precession wikiPageWikiLink Callipic_cycle.
- Axial_precession wikiPageWikiLink Callippic_cycle.
- Axial_precession wikiPageWikiLink Callippus.
- Axial_precession wikiPageWikiLink Category:Celestial_mechanics.
- Axial_precession wikiPageWikiLink Category:Precession.
- Axial_precession wikiPageWikiLink Category:Technical_factors_of_astrology.
- Axial_precession wikiPageWikiLink Cautes_and_Cautopates.
- Axial_precession wikiPageWikiLink Celestial_pole.
- Axial_precession wikiPageWikiLink Celestial_sphere.
- Axial_precession wikiPageWikiLink Centripetal_force.
- Axial_precession wikiPageWikiLink Chinese_astronomy.
- Axial_precession wikiPageWikiLink Cone.
- Axial_precession wikiPageWikiLink Cone_(geometry).
- Axial_precession wikiPageWikiLink Constellation.
- Axial_precession wikiPageWikiLink Couple_(mechanics).
- Axial_precession wikiPageWikiLink Crux.
- Axial_precession wikiPageWikiLink De_revolutionibus_orbium_coelestium.
- Axial_precession wikiPageWikiLink Declination.
- Axial_precession wikiPageWikiLink Dendera.
- Axial_precession wikiPageWikiLink Dendera_Temple_complex.
- Axial_precession wikiPageWikiLink Dendera_Zodiac.
- Axial_precession wikiPageWikiLink Dendera_zodiac.
- Axial_precession wikiPageWikiLink Diurnal_motion.
- Axial_precession wikiPageWikiLink Draco_(constellation).
- Axial_precession wikiPageWikiLink Earth.
- Axial_precession wikiPageWikiLink Ecliptic.
- Axial_precession wikiPageWikiLink Ecliptic_coordinate_system.
- Axial_precession wikiPageWikiLink Ecliptic_coordinates.
- Axial_precession wikiPageWikiLink Ecliptic_plane.
- Axial_precession wikiPageWikiLink Epoch_(astronomy).
- Axial_precession wikiPageWikiLink Equatorial_bulge.
- Axial_precession wikiPageWikiLink Equinox.
- Axial_precession wikiPageWikiLink Euclid.
- Axial_precession wikiPageWikiLink Euclidean_vector.
- Axial_precession wikiPageWikiLink Euler_angles.
- Axial_precession wikiPageWikiLink Exeligmos.
- Axial_precession wikiPageWikiLink False_Cross.
- Axial_precession wikiPageWikiLink Fixed_star.
- Axial_precession wikiPageWikiLink Fixed_stars.
- Axial_precession wikiPageWikiLink Franz_Cumont.
- Axial_precession wikiPageWikiLink Full_moon.
- Axial_precession wikiPageWikiLink G._J._Toomer.
- Axial_precession wikiPageWikiLink Gamma_Cephei.
- Axial_precession wikiPageWikiLink Geocentric.
- Axial_precession wikiPageWikiLink Geocentric_model.
- Axial_precession wikiPageWikiLink Geodesy.