Cassini Gap - Cassini Gap

Japanese: カッシニの隙間 - かっしにのすきま

…He was invited to join the newly established Academie des Sciences in France, and became the first director of the newly established Paris Observatory, and became a naturalized French citizen in 1669. He achieved many accomplishments, including discovering the gap in Saturn's rings (Cassini's Division), discovering the moons of Saturn, and proposing Cassini's Law of the Moon's rotation. He also got into geodesy and began a national survey of France, which was passed down from his son to his grandson until it was completed. The second was Jacques C. (1677-1756), born in Paris. …

From Saturn

…Semi-major axis = 9.5549 astronomical units Eccentricity = 0.0555 Orbital inclination = 2°.489 Distance from the Sun Minimum = 13.50 x 10 ⁸ km Average = 14.29 x 10 ⁸ km Maximum = 15.08 x 10 ⁸ km Orbital period = 29.457 years Mean orbital speed = 9.65 km/s Synodic period = 378.1 days Equatorial radius = 60,268 km Volume = 755 (Earth = 1) Mass = 95.16 (Earth = 1) Average density = 0.69 g/cm ³ Rotation period = 0.444 days Equatorial tilt = 26°.73 Albedo = 0.47 Maximum luminosity = -0.5 magnitude Equatorial gravity = 0.94 (Earth = 1) Escape velocity = 35.48 km/s The sixth planet in the solar system. …

*Some of the terminology that refers to the Cassini Division is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…新たに生まれたフランスのアカデミー･デ･シアンスに招かれ，さらに新設のパリ天文台の初代台長に就任して，69年フランスに帰化した。土星の環にある間隙(カッシニの隙間)，土星の衛星の発見，月の自転に関するカッシニの法則の提案などの業績を挙げ，また測地学にも手を染め，フランスの全国的測量に着手したが，これは息子から孫に受け継がれて完成されることになった。　2代目はジャックJacques C.(1677‐1756)で，パリ生れ。…

【土星】より

…軌道半長径＝9.5549天文単位離心率＝0.0555　軌道傾斜＝2゜.489太陽からの距離　最小＝13.50×10⁸km　平均＝14.29×10⁸km　最大＝15.08×10⁸km公転周期＝29.457年　平均軌道速度＝9.65km/s会合周期＝378.1日　赤道半径＝6万0268km体積＝755(地球＝1)　質量＝95.16(地球＝1)平均密度＝0.69g/cm³自転周期＝0.444日　赤道傾斜角＝26゜.73アルベド＝0.47　極大光度＝－0.5等赤道重力＝0.94(地球＝1)　脱出速度＝35.48km/s太陽系の第6惑星。…

※「カッシニの隙間」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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