...(1) Asteroids such as asteroids No. 1 Ceres to No. 4 Vesta, which have a relatively large diameter, are therefore observed to be bright, and have a spherical shape similar to that of ordinary planets, and are thought to have retained the shape they had when they were born. (2) Asteroids such as No. 944 Hidalgo and No. 2060 Chiron, which have large values for the semi-major axis and eccentricity, and move on orbits similar to those of comets whose aphelions lie outside the orbit of Jupiter. (3) Asteroids such as No. 1862 Apollo and No. 1566 Icarus, which have small semi-major axes and large values for eccentricity, and move on orbits whose perihelion is closer to the Sun than the Earth's orbit. ... *Some of the terminology that mentions "Chiron (planet)" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(1)小惑星番号1番ケレスから4番ベスタまでのように,比較的大きな直径をもち,したがって明るく観測され,形状は一般の惑星と類似の球形をしていて,小惑星が誕生したときのままの形態を保っていると考えられるもの。(2)944番ヒダルゴ,2060番キロンのように,軌道半長径および離心率が大きい値をもっていて,遠日点が木星の軌道の外側にあるすい星と類似した軌道上を運行しているもの。(3)1862番アポロ,1566番イカルスのように軌道半長径が小さく,しかも離心率が大きい値をとっているため,近日点が地球の軌道を越えて太陽に近づくような軌道上を運行しているもの。… ※「キロン(惑星)」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
>>: Chiron (person's name) - Chiron
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