Abstract
The recent fly-by of Uranus by the Voyager 2 spacecraft provided a singular opportunity to measure one of the fundamental but poorly known physical properties of the planet, its intrinsic rotation period. Earth-based photometric and spectroscopic estimates of the ‘atmospheric’ period vary greatly, with values ranging from ∼12 to 24 h (refs 1–4); estimates of the period based on the dynamical flattening of a rotating body range from ∼15 to 17 h (refs 5, 6). Here we use the Voyager planetary radioastronomy7 and magnetometer8 observations at Uranus to derive a period of 17.24 ± 0.01 h. The greatly improved precision of this measurement provides useful constraints on models of the planet's internal structure.
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References
Brown, R. A., Goody, R. Astrophys. J. 235, 1066–1070 (1980).
Trauger, J. T., Roessler, F. L. & Munch, G. Astrophys. J. 219, 1070–1083 (1978).
Trafton, L. Icarus 32, 402–412 (1977).
Munch, G. & Hippelein, H. Astr. Astrophys. 81, 189–197 (1979).
Elliot, J. L. et al. Astr. J. 86, 444–455 (1981).
Goody, R. in Uranus and the Outer Planets (ed. Hunt, G.) (Cambridge University Press, 1982).
Warwick, J. W. et al. Science (in the press).
Ness, N. F. et al. Science (in the press).
Desch, M. D. & Kaiser, M. L. Geophys. Res. Lett. 8, 253–256 (1981).
Connerney, J. E. P. J. geophys. Res. 86, 7679–7693 (1981).
Stone, P. H. Icarus 24, 292–298 (1975).
Smith, B. et al. Science (in the press).
Hubbard, W. B. & MacFarlane, J. J. geophys. Res. 85, 225–234 (1980).
Podolak, M. & Reynolds, R. T. Icarus 46, 40–50 (1981).
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Desch, M., Connerney, J. & Kaiser, M. The rotation period of Uranus. Nature 322, 42–43 (1986). https://doi.org/10.1038/322042a0
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DOI: https://doi.org/10.1038/322042a0
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