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planet wheel
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.
sister planet
noun
interstellar planet
noun
planet-struck
adj
primary planet
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