In celestial mechanics, **perihelion precession**, **apsidal precession** or **orbital precession** is the precession (rotation) of the orbit of a celestial body. More precisely it is the gradual rotation of the line joining the apsides of an orbit, which are the points of closest and farthest approach. Perihelion is the closest point to the Sun.

Read more about Apsidal Precession: History, Newton's Theorem of Revolving Orbits, Perturbation Theory, General Relativity, Long-term Climate

### Other articles related to "apsidal precession, precession":

Two-body Problem In General Relativity - Historical Context -

... See also

**Apsidal Precession**... See also

**Apsidal precession**and Laplace–Runge–Lenz vector If the potential energy between the two bodies is not exactly the 1/r potential of ... This**apsidal precession**is observed for all the planets orbiting the Sun, primarily due to the oblateness of the Sun (it is not perfectly spherical) and the attractions of the other planets for one another ... of the orbit (the periapsis and apoapsis, respectively)**apsidal precession**corresponds to the rotation of the line joining the apsides ...**Apsidal Precession**- Long-term Climate

... Because of

**apsidal precession**the Earth's argument of periapsis slowly increases ... year while the tropical year (which calendars attempt to track) is shorter due to the

**precession**of Earth's rotational axis, the two forms of '

**precession**' add ... The figure illustrates the effects of

**precession**on the northern hemisphere seasons, relative to perihelion and aphelion ...

### Famous quotes containing the word precession:

“But how is one to make a scientist understand that there is something unalterably deranged about differential calculus, quantum theory, or the obscene and so inanely liturgical ordeals of the *precession* of the equinoxes.”

—Antonin Artaud (1896–1948)

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