| The Q Values of the Galilean Satellites and their Tidal Contributions to the Deceleration of Jupiter's Rotation |
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| 作者姓名： | Hong Zhang and Cheng- Zhi Zhang |
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| 作者单位： | Hong Zhang and Cheng- Zhi Zhang
Department of Astronomy，Nanjing University，Nanjing 210093 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | The relationship between the k2/Q of the Galilean satellites and the k2J/QJ of Jupiter is derived from energy and momentum considerations. Calculations suggest that the Galilean satellites can be divided into two classes according to their Q values: Io and Ganymede have values between 10 and 50, while Europa and Callisto have values ranging from 200 to 700. The tidal contributions of the Galilean satellites to Jupiter's rotation are estimated. The main deceleration of Jupiter, which is about 99.04% of the total, comes from Io.
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The Q Values of the Galilean Satellites and their Tidal Contributions to the Deceleration of Jupiter's Rotation |
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| Hong Zhang and Cheng- Zhi Zhang.The Q Values of the Galilean Satellites and their Tidal Contributions to the Deceleration of Jupiter''''s Rotation[J].Chinese Journal of Astronomy and Astrophysics,2004,4(5). |
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| Authors: | Hong Zhang and Cheng- Zhi Zhang |
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| Institution: | Hong Zhang and Cheng- Zhi Zhang
Department of Astronomy,Nanjing University,Nanjing 210093 |
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| Abstract: | The relationship between the k2/Q of the Galilean satellites and the k2J/QJ of Jupiter is derived from energy and momentum considerations. Calculations suggest that the Galilean satellites can be divided into two classes according to their Q values: Io and Ganymede have values between 10 and 50, while Europa and Callisto have values ranging from 200 to 700. The tidal contributions of the Galilean satellites to Jupiter's rotation are estimated. The main deceleration of Jupiter, which is about 99.04% of the total, comes from Io. |
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| Keywords: | astrometry - celestial mechanics - planet and satellites: individual: (Io Europa Ganymede Callisto) |
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