自転周期の記事

At left, tidally locked, the Moon rotates at the same rate it orbits the Earth, keeping the same face toward the planet. At right, not tidally locked, if the Moon did not rotate then the face would change over the course of an orbit. Viewed from north; not to scale.

潮汐ロックの仕組みと宇宙における影響

潮汐ロック同期回転天体力学月

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Earth's rotation imaged by Deep Space Climate Observatory, with axis tilt

天体の自転周期恒星日と太陽日の違いから惑星の回転まで

自転周期恒星日太陽日差動回転

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Derivative of −Δt. The axis on the right shows the length of the solar day.

会合日（太陽日）の仕組みと天体ごとの周期的な違い

会合日太陽日恒星日自転周期

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At left, tidally locked, the Moon rotates at the same rate it orbits the Earth, keeping the same face toward the planet. At right, not tidally locked, if the Moon did not rotate then the face would change over the course of an orbit. Viewed from north; not to scale.

潮汐ロックの仕組みと宇宙における影響

潮汐ロック同期回転自転周期公転周期

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At left, tidally locked, the Moon rotates at the same rate it orbits the Earth, keeping the same face toward the planet. At right, not tidally locked, if the Moon did not rotate then the face would change over the course of an orbit. Viewed from north; not to scale.

潮汐ロックの仕組みと宇宙における影響

潮汐ロック同期回転天文学月

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Earth's rotation imaged by Deep Space Climate Observatory, with axis tilt

天体の自転周期恒星日と太陽日の違いから惑星の回転まで

自転周期恒星日太陽日差動回転

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ヴィルヘルム・ビア月と火星の地図を切り拓いたアマチュア天文学者

ヴィルヘルム・ビア天文学月地図火星

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At left, tidally locked, the Moon rotates at the same rate it orbits the Earth, keeping the same face toward the planet. At right, not tidally locked, if the Moon did not rotate then the face would change over the course of an orbit. Viewed from north; not to scale.

潮汐ロックの仕組みと宇宙における影響

潮汐ロック同期回転天文学月

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火星の1日「ソル」とは？地球との時間差やNASAの運用ルールを解説

火星ソルMarsSol

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