Construct · 1 fields · 1 citations

apsis: a standalone construct

One name. One construct. A landmark on the map.

● anchor · one construct, one field Nearest construct by meaning·not indexed
apsis1 CONSTRUCTApsisMURRAY & DERMOTT · TURNING POINT

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Orbital mechanics

A nearest or farthest point of an orbit

In orbital mechanics an apsis is a turning point of an orbit: the point where the orbiting body is nearest the focus (periapsis) or farthest from it (apoapsis); these take body-specific names such as perihelion and aphelion about the Sun, or perigee and apogee about the Earth. Murray and Dermott's Solar system dynamics treats the line of apsides and its slow precession, the gradual rotation of the orbit's long axis under perturbations. The referent is an extreme-distance point of an orbit, and the axis joining the two, fundamental to describing an elliptical path.[1]

Unit
The nearest or farthest orbital distance from the focus (and the line joining them)
Recovery means
Not applicable
Measured by
Found from the orbit's size and shape (semi-major axis and eccentricity); the slow drift of the apsidal line is apsidal precession

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Nearby constructs

axis1 fields · 1 citationsanchor · a standalone constructbody2 fields · 3 citationsjingle · one word, two constructsclimax3 fields · 3 citationsjingle · one word, three constructs

References

  1. Murray, C. D., & Dermott, S. F. (1999). Solar system dynamics. Cambridge University Press. ISBN 9780521575973

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