Tidal end states of binary asteroid systems with a nonspherical component

被引：14

作者：

Taylor, Patrick A. ^{[1
]}

Margot, Jean-Luc ^{[2
,3
]}

机构：

[1] Arecibo Observ, Arecibo, PR 00612 USA

[2] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

ICARUS | 2014年 / 229卷

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

Asteroids; Satellites of asteroids; Tides; solid body; dynamics; rotation; STABILITY; DYNAMICS;

D O I：

10.1016/j.icarus.2013.11.008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive the locations of the fully synchronous end states of tidal evolution for binary asteroid systems having one spherical component and one oblate- or prolate-spheroid component. Departures from a spherical shape, at levels observed among binary asteroids, can result in the lack of a stable tidal end state for particular combinations of the system mass fraction and angular momentum, in which case the binary must collapse to contact. We illustrate our analytical results with near-Earth Asteroids (8567) 1996 HW1, (66391) 1999 KW4, and 69230 Hermes. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：418 / 422

页数：5

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