A PRELIMINARY-ANALYSIS OF THE ORBIT OF THE MARS TROJAN ASTEROID (5261) EUREKA

被引：30

作者：

MIKKOLA, S

INNANEN, K

MUINONEN, K

BOWELL, E

机构：

[1] Turku University Observatory, Tuorla, Piikkiö

[2] Dept. of Physics and Astronomy, York University, Toronto, M3J 1P3, Ontario

[3] Lowell Observatory, Flagstaff, 86001, AZ

来源：

CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY | 1994年 / 58卷 / 01期

关键词：

MARS; TROJAN; ASTEROID;

D O I：

10.1007/BF00692117

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations and results of orbit determination of the first Known Mars Trojan asteroid (5261) Eureka are presented. We have numerically calculated the evolution of the orbital elements, and have analyzed the behavior of the motion during the next 2 Myr. Strong perturbations by planets other than Mars seem to stabilize the eccentricity of the asteroid by stirring the high order resonances present in the elliptic restricted problem. As a result, the orbit appears stable at least on megayear timescales. The difference of the mean longitudes of Mars and Eureka and the semimajor axis of the asteroid form a pair of variables that essentially behave in an adiabatic manner, while the evolution of the other orbital elements is largely determined by the perturbations due to other planets.

引用

页码：53 / 64

页数：12

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