Orbital period - orbital period

Japanese: 軌道周期 - きどうしゅうき
Orbital period - orbital period

…In addition, with normal launch methods, it is not possible to achieve an orbit with an inclination equal to or less than the latitude of the launch point. The orbital period T of an elliptical orbit (including a circular orbit) is given by, and this period, which corresponds to the first cosmic velocity, is about 84 minutes. In particular, a circular orbit with a period T of 1 day is called a geosynchronous orbit, and among them, an orbit with an inclination of 0 degrees is usually called a geostationary orbit (Figure 2). …

*Some of the terminology that refers to "orbital period" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…なお,通常の打上げ方式では,発射点緯度以下の軌道傾斜角をもつ軌道は達成できない。 楕円軌道(円軌道を含む)の軌道周期Tは,で与えられ,第一宇宙速度に対応するこの周期は約84分である。とくに周期Tが1日の円軌道を地球同期軌道geosynchronous orbitといい,その中で,軌道傾斜角0度の軌道を通常,静止軌道と呼んでいる(図2)。…

※「軌道周期」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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