The rotation period of Uranus

Details The rotation period of Uranus The rotation period of Uranus

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.322...42d&link_type=abstract

Nature (ISSN 0028-0836), vol. 322, July 3, 1986, p. 42, 43.

Computer Science

41

Orbital Elements, Planetary Rotation, Uranus (Planet), Flyby Missions, Magnetic Measurement, Planetary Magnetic Fields, Power Spectra, Radio Spectra, Root-Mean-Square Errors, Spectrum Analysis, Voyager 2 Spacecraft

Scientific paper

On 24 January 1986 the spacecraft Voyager 2 transversed the innermost magnetosphere of the planet Uranus, coming as close as 4.2 Uranus radii to the planet. It is pointed out that the magnetic field data provide a direct measure of the rotation period of the planet's interior, where the field is generated. Two period determinations are reported. A combination of the obtained values provides a weighted mean value of P = 17.24 + or - 0.01 h. It is concluded that the 17.24-h rotation period has important consequences for studies of atmospheric dynamics and the internal structure and composition of Uranus. Thus, inferences regarding the internal structure can be drawn from the relationship between the observed planetary oblateness, rotation period, and gravitational moment.

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