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mean business
verb
mean motion
noun
mean planet
noun
(astronomy,
celestial
mechanics)
An
imaginary
celestial
body
(corresponding
to
another,
real,
orbiting
one)
which
orbits
with
constant
speed
along
an
auxiliary
circle
(a
circle
which
shares
a
diameter
with
the
major
axis
of
the
elliptical
orbit
of
the
corresponding
real
celestial
body),
such
that
its
position
coincides
with
the
position
of
the
corresponding,
real
celestial
body
when
that
body
passes
through
periapsis.
mean anomaly
noun
(astronomy,
celestial
mechanics)
An
orbital
parameter
of
a
celestial
body
(in
an
elliptic
orbit);
the
mean
motion
multiplied
by
the
time
since
the
last
passage
through
periapsis;
the
angle
PCM
(measured
in
radians)
defined
by
P
=
the
periapsis,
C
=
the
center
of
the
elliptical
orbit,
and
M
=
the
mean
planet.
takes the meaning
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