用一对球体逼近天体质量分布——以小行星（486958）Arrokoth为例：比较分析

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Solar System Research Pub Date : 2025-05-13 DOI:10.1134/S0038094624601804

A. A. Burov, V. I. Nikonov

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引用次数: 0

摘要

本文研究了接触双星跨海王星小行星（486 958）Arrokoth的引力场建模问题。一个所谓的引力哑铃正在被建造——一个天体的模型，它是一对有引力的球体，中心以固定的距离分开。哑铃的参数有两种确定方式。第一种方法使用k-means算法，这是从模式识别理论中知道的。在第二种方法中，假设物体具有动态对称性，并通过解决出现的所谓力矩问题来找到哑铃的参数。对结果进行了对比分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the Approximation of Mass Distribution for a Celestial Body by a Pair of Spheres on the Example of Asteroid (486958) Arrokoth: Comparative Analysis

The paper considers the problem of modeling the gravitational field of contact binary trans-Neptunian asteroid (486 958) Arrokoth. A so-called gravitating dumbbell is being built—a model of a celestial body that is a pair of gravitating spheres, with the centers separated by a fixed distance. The parameters of the dumbbell are determined in two ways. The first method uses the k-means algorithm, which is known from pattern recognition theory. In the second method, it is assumed that the body possesses dynamic symmetry, and the parameters of the dumbbell are found by solving the so-called moment problem that arises. A comparative analysis of the results is performed.

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来源期刊

Solar System Research 地学天文-天文与天体物理

CiteScore

1.60

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.