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Astro*Dictionary by Michael Erlewine





2 articles for "Radius Vector"

Radius Vector [Astro*Index]

A line drawn from the focus of an ellipse to an orbiting body; e.g. a line drawn from the Sun to a planet.

Kepler's second law states that even though planets speed up and slow down, the radius vector sweeps over equal areas in equal times.

See also:
♦ Kepler's Laws ♦ Ellipse
Radius Vector [Munkasey M.]

This is a line which gives the length and bearing ofan arrow of direction from the center of a sphere outwards.

See also:
♦ Ellipse


Astro*Index Copyright © 1997 Michael Erlewine