Jupiter gravity field estimated from the first two Juno orbits
| Autor: | J. D. Anderson, Michael Feldman, Daniele Serra, Giacomo Tommei, M. Gregnanin, John E. P. Connerney, Sami W. Asmar, Luciano Iess, Marco Zannoni, Andrea Milani, Dustin Buccino, Daniele Durante, Paolo Tortora, Steven Levin, W. M. Folkner, L. Gomez Casajus, Ryan S. Park, Scott Bolton, Marzia Parisi |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Spherical harmonics Astronomy Astrophysics 01 natural sciences Stability (probability) Jovian Jupiter symbols.namesake Geophysics Gravitational field Planet 0103 physical sciences symbols General Earth and Planetary Sciences Degree (angle) Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Doppler effect 0105 earth and related environmental sciences |
| Zdroj: | Geophysical Research Letters. 44:4694-4700 |
| ISSN: | 0094-8276 |
| Popis: | The combination of the Doppler data from the first two Juno science orbits provides an improved estimate of the gravity field of Jupiter, crucial for interior modeling of giant planets. The low-degree spherical harmonic coefficients, especially J4 and J6, are determined with accuracies better than previously published by a factor of 5 or more. In addition, the independent estimates of the Jovian gravity field, obtained by the orbits separately, agree within uncertainties, pointing to a good stability of the solution. The degree 2 sectoral and tesseral coefficients, C2,1, S2,1, C2,2, and S2,2, were determined to be statistically zero as expected for a fluid planet in equilibrium. |
| Databáze: | OpenAIRE |
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