Equipotential surface and normal gravity of the Galilean satellites
| Autor: | Hong Zhang, Cheng-zhi Zhang |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Physics
Gravity (chemistry) Orbital plane Equipotential surface Astronomy Astronomy and Astrophysics Geodesy Physics::Geophysics Latitude Galilean moons Jupiter symbols.namesake Space and Planetary Science Physics::Space Physics symbols Natural satellite Astrophysics::Earth and Planetary Astrophysics Longitude Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Chinese Astronomy and Astrophysics. 26:481-488 |
| ISSN: | 0275-1062 |
| DOI: | 10.1016/s0275-1062(02)00099-1 |
| Popis: | In this article, expanded equations of normal gravity on the equipotential surface are proposed for a natural satellite whose orbital plane is close to its equatorial plane. Tidal effects on the normal gravity are also discussed. The authors apply these to the Galilean satellites. Calculations suggest that the tides raised by Jupiter weakly affect the Galilean satellites. The radial displacements of the gravity due to the tides are in the range between 10−3 and 10−5 m s−2, which are similar to the latitudinal and longitudinal displacements. The variations along the latitude circle are larger than those along the longitude circle. We conclude that the tidal effects on most of the Galilean satellites are larger than those on the Moon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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