Last Updated
：2025/11/27
planetary object
Noun
Japanese Meaning
太陽系内の主要な天体ではなく、地質学的に分化しているか流体静力学的均衡状態にあることで、惑星に似た地質構造を持つ天体。具体的には、惑星、準惑星、大型の衛星や大型小惑星などを指す。
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Sense（2）
（ plural ）
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(astronomy) Any secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids.
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planetary object
The probe was sent to study a distant planetary object suspected of having subsurface oceans and active geology.
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The probe was sent to study a distant planetary object suspected of having subsurface oceans and active geology.
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