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11
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84871656803
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note
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Vesta's volume was estimated using three methods: (1) a stereophotoclinometrically derived (SPC) shape model that filled in the unmeasured northern latitudes with spherical harmonics fit to the measured region; (2) the SPC shape model that used the Thomas shape model (11) to fill in the northern cap; and (3) the stereophotogrammetrically derived shape model filled in the north with the SPC harmonics. The differences were 0.28% between models 1 and 2 and 0.059% between 1 and 3, indicating that the unmeasured northern cap is unlikely to cause a large uncertainty in the volume estimate. Model 2 is used throughout this report.
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13
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78650947477
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A. Konopliv et al., Icarus 211, 401 (2011).
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Konopliv, A.1
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84855502585
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See supplementary materials on
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See supplementary materials on Science Online.
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Science Online
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P. Thomas et al., Icarus 128, 88 (1997).
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Thomas, P.1
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17
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84871642367
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note
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The error in bulk density was estimated by assuming uncertainties in the axial dimensions of a best-fit ellipsoid of 100 m equatorial and 500 m polar, and forward-calculating the density variation. The quoted value is three times that estimate.
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-
-
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18
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84871661800
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note
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20 and is related to the gravitational flattening (31).
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-
-
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19
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84871656779
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note may have been closer to hydrostatic equilibrium at the time of core formation, in which case its core may have frozen in an oblate shape. The dependence of the derived bulk silicate density on the core's shape demonstrates that its influence is weak.
-
22, 0.000254 ± 0.000005) indicate that Vesta is not currently in hydrostatic equilibrium, but its rotation dominates the second harmonic of its gravity field. Vesta may have been closer to hydrostatic equilibrium at the time of core formation, in which case its core may have frozen in an oblate shape. The dependence of the derived bulk silicate density on the core's shape demonstrates that its influence is weak.
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22
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33846897118
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D. S. Lauretta, H. Y. McSween, Eds. Univ. of Arizona Press, Tucson, AZ
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N. L. Chabot, H. Haack, in Meteorites and the Early Solar System, D. S. Lauretta, H. Y. McSween, Eds. (Univ. of Arizona Press, Tucson, AZ, (2006), pp. 747-771.
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Haack, H.2
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23
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85027929337
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and references therein
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H. Y. McSween et al., Space Sci. Rev. 163, 141 (2010) and references therein.
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McSween, H.Y.1
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84855706281
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and references therein
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M. T. Zuber et al., Space Sci. Rev. 163, 77 (2011) and references therein.
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