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Additional
IAU definition of planet
English Wikipedia - The Free Encyclopedia
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IAU definition of planet
The
definition of
planet
set in
Prague
in 2006 by the
International Astronomical Union
(IAU) states that, in the
Solar System
, a
planet
is a
celestial body
which:
is in
orbit
around the
Sun
,
has sufficient mass to assume
hydrostatic equilibrium
(a nearly round shape), and
has "
cleared the neighborhood
" around its orbit.
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