Re: Planet X Cover-Up: Rationale?

Bill Nelson wrote:
> What wobble?

The term “wobble” is used to explain perturbations between Saturn and
Jupiter, Jupiter and the Sun, Jupiter and its moons, and the influence
of planets in creating a wobble in their stars.

Grubaugh "Synchronous Retrograde Orbit" (preliminary status)
by throopw@sheol.org
    In fact, saturn's acceleration due to jupiter is 100 times
    less than its acceleration due to the sun. Nevertheless, the
    orbit turns out to be quite stable. When N-body simulated
    for 1000 simulated-years, jupiter and saturn keep much the
    same relationship WRT the sun; the line connecting keeps
    pointed at roughly the same direction against the inertial
    (fixed stars) background, with very little year-to-year drift
    (though with a yearly "wobble" of a bit more than 30 degrees).

The Search for Planets Around Other Stars, 
by Andrew Fraknoi,Astronomical Society of the Pacific
    For example, the  Sun is a thousand times more massive
    than Jupiter, so the center of mass of the Sun-Jupiter system
    lies very close to the Sun. Nevertheless, an extraterrestrial
    observer measuring the Sun's motion through space would
    detect a slight wobble in the Sun's path, a wobble with a
    period of twelve years, the same time it takes Jupiter to
    orbit once around the center of mass.

The Columbia Encyclopedia, Sixth Edition.  2001.
    Neptune was discovered in 1846 as the result of a
    mathematical analysis of the irregularities in the motion of
    Uranus, and Pluto, whose existence was predicted from the
    perturbations of both Uranus and Neptune, was found in 1930.
    ... Because stars are so distant and bright and an extrasolar
    planet, no matter how large, is relatively small and dim, it
    cannot be seen or photographed directly. Its presence is
    usually inferred from a periodic wobble in the spectrum of
    a target star’s frequencies. This wobble, produced by
    gravitational influences, causes tiny shifts in the star’s
    frequencies that are caught by telescopes and analyzed to
    yield information on the body affecting the star.

The Discovery of Extrasolar Planets, 
by Geoffrey Marcy and R. Paul Butler
    For example, Jupiter, the largest planet in our solar system, has
    one-thousandth of the mass of the sun. Therefore, every 11.8
    years (Jupiter's period), the sun wobbles in a circle that is
    one-thousandth the size of Jupiter's orbit. The mass of Jupiter is
    about 318 times the mass of Earth. The other eight planets also
    cause the sun to wobble, but by smaller amounts.

Io’s Internal Heat Dissipation, a Simplified Mathematical Model,
by Kevin Kaczmarek, Mariah Lyndaker, and Jennifer Ward
    But, the gravitational forces from Europa, Ganymede, and
    Jupiter add a slight “wobble” to this directional locking so
    that a straight line connecting the two masses does not always
    extend to the center of Jupiter (Arnett 1998).