The Q Values of the Galilean Satellites and their Tidal Contributions to the Deceleration of Jupiters Rotation

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.

作 者： Hong Zhang Cheng-Zhi Zhang   作者單位： Department of Astronomy,Nanjing University,Nanjing,210093  刊 名： 天體物理學報（英文版）  ISTIC SCI 英文刊名： CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS  年，卷(期)： 2004 4(5)  分類號：   關鍵詞： astrometry-celestial mechanics-planet and satellites: individual: (Io   Europa   Ganymede   Callisto)  

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