月球勘探者号探测到的改进后的月球重力场。

Improved gravity field of the moon from lunar prospector.

作者信息

Konopliv AS, Binder AB, Hood LL, Kucinskas AB, Sjogren WL, Williams JG

机构信息

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,

出版信息

Science. 1998 Sep 4;281(5382):1476-80. doi: 10.1126/science.281.5382.1476.

DOI:10.1126/science.281.5382.1476

PMID:9727968

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.

摘要

一种改进的重力模型，通过对月球勘探者号（LP）航天器的多普勒跟踪，揭示了月球近侧洪堡海、门德尔-里贝格和席勒-祖基乌斯撞击盆地下方的三个新的大型质量密集区（mascons），其中后一个盆地没有可见的月海填充。尽管没有对月球远侧重力进行直接测量，但LP部分解析了赫兹普龙、库仑-萨顿、弗罗因德利希-沙罗诺夫和莫斯科海等大型远侧盆地中的四个mascons。这些盆地中的每一个中心相对于周围盆地都有重力最大值。改进后的归一化极惯性矩（0.3932 +/- 0.0002）与半径为220至450公里的铁芯一致。