Click to see the original definition of «じゅん‐わくせい» in the Japanese dictionary.
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Definition of じゅん‐わくせい in the Japanese dictionary
"Dwarf planet" A celestial body that revolves the sun and is a relatively large one that does not satisfy the planetary definition. In 2006 a new classification established by the International Astronomical Union (IAU), Pluto, which was long regarded as a planet by this, was regarded as a dwarf planet. The planet revolutionized the sun (2) it became spherical with self gravity, (3) captured celestial bodies other than the satellite by gravity or moved away by gravity scattering, so other planets It was defined as having no celestial bodies, but the dwarf planet does not satisfy this (3). Dwarf planet. Dwarf stars. [Adjunctive] In the International Astronomical Union, Pluto, Ellis, Ceres, Makeke, and Howea are five dwarf planets. じゅん‐わくせい【準惑星】 《dwarf planet》太陽を公転する天体で、惑星の定義を満たさないもののうち比較的大型なもの。2006年に国際天文学連合（IAU）が設けた新しい分類で、これにより長らく惑星とされていた冥王星が準惑星とされた。惑星は（1）太陽を公転し、（2）自己重力で球形となっていて、（3）衛星以外の他天体を引力で取り込んだり逆に重力散乱で遠ざけたりしたため、公転軌道近くには他天体がないもの、と定義づけられたが、準惑星はこの（3）を満たさない。矮小惑星。矮惑星。
[補説]国際天文学連合では、冥王星・エリス・ケレス・マケマケ・ハウメアの五つを準惑星としている。
Click to see the original definition of «じゅん‐わくせい» in the Japanese dictionary.
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The translations of じゅん‐わくせい from Japanese to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «じゅん‐わくせい» in Japanese.
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Examples of use in the Japanese literature, quotes and news about じゅん‐わくせい
EXAMPLES
10 JAPANESE BOOKS RELATING TO «じゅん‐わくせい»
Discover the use of じゅん‐わくせい in the following bibliographical selection. Books relating to じゅん‐わくせい and brief extracts from same to provide context of its use in Japanese literature.
