衛星軌道の記事

GPS satellite constellation animation

GPS衛星ブロックの進化史初代Navstarから次世代Block IIIまで

GPS衛星Navstar衛星測位システム米国宇宙軍

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Altitude is a vertical measurement between a reference datum and an object.

高度の定義と影響航空・宇宙・人体への多角的な視点

高度標高航空用語大気圏

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In sectional/side view, a two-dimensional representation of the three-dimensional concept of the Hill sphere, here showing the Earth's "gravity well" (gravitational potential of Earth, blue line), the same for the Moon (red line) and their combined potential (black thick line). Point P is the force free spot, where gravitational forces of Earth and Moon cancel. The sizes of Earth and Moon are in the proportion, but distances and energies are not to scale.

ヒル圏天体の重力支配領域とその力学

ヒル圏重力圏ラグランジュ点軌道力学

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