Improved Gravity Field of the Moon from Lunar Prospector-Reference-Cited by-同舟云学术

Improved Gravity Field of the Moon from Lunar Prospector

Published:1998-09-04 Issue:5382 Volume:281 Page:1476-1480
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Konopliv A. S.¹,Binder A. B.¹,Hood L. L.¹,Kucinskas A. B.¹,Sjogren W. L.¹,Williams J. G.¹

Affiliation:

1. A. S. Konopliv, A. B. Kucinskas, W. L. Sjogren, J. G. Williams, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. A. B. Binder, Lunar Research Institute, Gilroy, CA 95020, USA. L. L. Hood, University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ 85721, USA.

Abstract

An improved gravity model from Doppler tracking of the Lunar Prospector (LP) spacecraft reveals three new large mass concentrations (mascons) on the nearside of the moon beneath the impact basins Mare Humboltianum, Mendel-Ryberg, and Schiller-Zucchius, where the latter basin has no visible mare fill. Although there is no direct measurement of the lunar farside gravity, LP partially resolves four mascons in the large farside basins of Hertzsprung, Coulomb-Sarton, Freundlich-Sharonov, and Mare Moscoviense. The center of each of these basins contains a gravity maximum relative to the surrounding basin. The improved normalized polar moment of inertia (0.3932 ± 0.0002) is consistent with an iron core with a radius of 220 to 450 kilometers.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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