最終更新日：2024/07/30
(astronomy) an astronomical object with enough mass to achieve hydrostatic equilibrium, but not enough to initiate core fusion at any time in its existence. That is, it is rounded in shape and is smaller than a star. Planemos include planets, dwarf planets, and the larger moons of the Solar System (satellite planets), but also sub-brown dwarfs and rogue planets between the stars.
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planemo
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planemo
noun
(astronomy)
an
astronomical
object
with
enough
mass
to
achieve
hydrostatic
equilibrium,
but
not
enough
to
initiate
core
fusion
at
any
time
in
its
existence.
That
is,
it
is
rounded
in
shape
and
is
smaller
than
a
star.
Planemos
include
planets,
dwarf
planets,
and
the
larger
moons
of
the
Solar
System
(satellite
planets),
but
also
sub-brown
dwarfs
and
rogue
planets
between
the
stars.
意味（1）
(astronomy)
an
astronomical
object
with
enough
mass
to
achieve
hydrostatic
equilibrium,
but
not
enough
to
initiate
core
fusion
at
any
time
in
its
existence.
That
is,
it
is
rounded
in
shape
and
is
smaller
than
a
star.
Planemos
include
planets,
dwarf
planets,
and
the
larger
moons
of
the
Solar
System
(satellite
planets),
but
also
sub-brown
dwarfs
and
rogue
planets
between
the
stars.
