Reason for Procession of the Equinox?

From: Richard DeLuca (odyssey_at_stny.rr.com.invalid)
Date: 11/30/04


Date: Tue, 30 Nov 2004 03:24:56 GMT


I'm not a complete stranger to celestial mechanics, being familiar and
comfortable with such concepts as nutation and cyclical changes in the
obliquity of the Ecliptic. However, I've never really understood the
precise *cause* of the Earth's precession, and why its period is so
long. My Google searches have not been particularly productive, and
some explanations I've found seem rather farfetched, even bizarre.

I have other questions about some peculiar little-known effects of
precession, but they should wait until I have a better understanding of
precession itself. Any help is much appreciated.

Starry Skies,
Rich

PS:

I'm aware that sci.astro is the more appropriate usenet group for this
type of question. Unfortunately, like many of us, I don't spend much
time there.



Relevant Pages

  • Re: Reason for Procession of the Equinox?
    ... >comfortable with such concepts as nutation and cyclical changes in the ... >obliquity of the Ecliptic. ... >precession itself. ... much less to comprehend the truth of it. ...
    (sci.astro.amateur)
  • Re: Reason for Procession of the Equinox?
    ... >comfortable with such concepts as nutation and cyclical changes in the ... >obliquity of the Ecliptic. ... >precession itself. ... much less to comprehend the truth of it. ...
    (sci.astro)
  • Re: Reason for Procession of the Equinox?
    ... > comfortable with such concepts as nutation and cyclical changes in the ... > obliquity of the Ecliptic. ... Precession rate is given by equation ...
    (sci.astro.amateur)
  • Re: Reason for Procession of the Equinox?
    ... The ecliptic, the sun's equatorial plane? ... >this 2.5 degrees large and the time interval long to be nutation? ... naturally has a shorter period then the precession of that axis. ... The obliquity of the ecliptic and the inclination of the orbit can change ...
    (sci.astro.amateur)
  • Re: Orbital precession w/o GR
    ... precession of mercury orbit, ... The rotational motion of the axis of a spinning body, ... See also nutation. ... - Constant precession requires constant torque. ...
    (sci.physics.relativity)