precession cycle

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• Precession (astronomy) — In astronomy, precession refers to the movement of the rotational axis of a body, such as a planet, with respect to inertial space. In particular, it refers to the precession of the Earth s rotational axis, also called the precession of the… …   Wikipedia

• Precession (disambiguation) — Precession refers to a change in the direction of the axis of a rotating object.Precession may specifically mean:*Precession (astronomy) mdash; the precession of the Earth s axis of rotation (also known as the precession of the equinoxes ), or… …   Wikipedia

• Precession des equinoxes — Précession des équinoxes Trajet de l axe du pôle Nord sur la voûte céleste, dû à la précession (en supposant une vitesse de précession et une obliquité constantes) Trajet de l …   Wikipédia en Français

• Precession — For other uses, see Precession (disambiguation). Precession of a gyroscope Precession is a change in the orientation of the rotation axis of a rotating body. It can be defined as a change in direction of the rotation axis in which the second… …   Wikipedia

• Précession des équinoxes — Mouvement de précession. Trajet de l axe du pôle Nord sur la voûte céleste, dû à la …   Wikipédia en Français

• precession of the equinoxes — The slow westward motion of equinoctial points (the first point of Aries and the first point of Libra) along the ecliptic by about 50.26” of are each year. A full cycle of precession occupies about 25,800 years. The term is used in… …   Aviation dictionary

• Full moon cycle — The full moon cycle is a cycle of about 14 lunations over which full moons vary in apparent size and age (time since new moon). The sequence is *Full moon big (perigee at full moon) *Full moon young (perigee at first quarter) *Full moon small… …   Wikipedia

• Apsidal precession — This article is about rotation of the orbit of a celestial body. For precession of the rotational axis, see precession of the equator. For change in orbital inclination, see precession of the ecliptic. In celestial mechanics, perihelion… …   Wikipedia

• Lunar precession — Unreferenced|date=May 2007There are two important precessional motions in the Orbit of the Moon.The long axis (line of the apsides: perigee and apogee) of the moon s elliptical orbit precesses about once in just under 9 years. It is caused by the …   Wikipedia

• equinoxes, precession of the — Motion of the points where the Sun crosses the celestial equator, caused by precession of Earth s axis. Hipparchus noticed that the stars positions were shifted consistently from earlier measures, indicating that Earth, not the stars, was moving …   Universalium

• Lunisolar precession — Lunisolar Lu ni*so lar, a. [L. luna moon + E. solar: cf. F. lunisolaire.] Resulting from the united action, or pertaining to the mutual relations, of the sun and moon. [1913 Webster] {Lunisolar precession} (Astron.), that portion of the annual… …   The Collaborative International Dictionary of English