SHAPE AND NONPRINCIPAL AXIS SPIN-STATE OF ASTEROID-4179 TOUTATIS

被引：143

作者：

HUDSON, RS ^{[1
]}

OSTRO, SJ ^{[1
]}

机构：

[1] CALTECH, JET PROP LAB, PASADENA, CA 91109 USA

来源：

SCIENCE | 1995年 / 270卷 / 5233期

关键词：

D O I：

10.1126/science.270.5233.84

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Radar observations of Toutatis placed hundreds to thousands of pixels per image on the asteroid and revealed it to be a non-principal axis rotator. The radar data are used to calculate Toutatis's three-dimensional shape, spin state, and the ratios of the principal moments of inertia. Toutatis is rotating in a long-axis mode characterized by periods of 5.41 days (rotation about the long axis) and 7.35 days (average for long-axis precession), and its dimensions along the principal axes are 1.92, 2.40, and 4.60 kilometers. To within the model's uncertainties, Toutatis's density is homogeneous, or its inhomogeneities mimic the inertia tenser of a homogeneous body.

引用

页码：84 / 86

页数：3

共 18 条

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