...A general term for artificially launched satellites orbiting the Earth, satellites of other celestial bodies, and interplanetary probes. Usually, satellites orbiting the Earth are simply called artificial satellites, and other interplanetary probes are often called artificial celestial bodies or artificial planets. If a satellite is launched at a speed of more than about 11.2 km/s (second cosmic velocity) on the Earth's surface, it will not orbit the Earth, but will escape the Earth. *Some of the terminology that mentions "artificial planet" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…人工的に打ち上げられた地球周回の衛星や他天体の孫衛星,惑星間探査機の総称。通例,地球周回の衛星は単に人工衛星といい,その他の惑星間探査機を人工天体,あるいは人工惑星artificial planetと呼ぶことが多い。地球表面においては約11.2km/s以上の速さ(第二宇宙速度)で打ち出すと,その軌道は地球周回軌道とはならず,地球を脱出する軌道となる。… ※「artificial planet」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 |
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