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木星特洛伊小行星研究综述

黄海涛 吴昀昭

引用本文: 黄海涛,吴昀昭. 2024. 木星特洛伊小行星研究综述. 地球与行星物理论评(中英文),55(2):175-183
Huang H T, Wu Y Z. 2024. Review of Jupiter-Trojan asteroids research. Reviews of Geophysics and Planetary Physics, 55(2): 175-183 (in Chinese)

木星特洛伊小行星研究综述

doi: 10.19975/j.dqyxx.2023-022
基金项目: 国家自然科学基金资助项目(12150009)
详细信息
    作者简介:

    黄海涛(2000-),男,硕士研究生,主要从事小行星遥感和深空探测研究. E-mail:ht.huang.pmo@qq.com

    通讯作者:

    吴昀昭(1977-),男,研究员,主要从事行星遥感和深空探测研究. E-mail:wu@pmo.ac.cn

  • 中图分类号: P185

Review of Jupiter-Trojan asteroids research

Funds: Supported by the National Natural Science Foundation of China (Grant No. 12150009)
  • 摘要: 木星特洛伊小行星(Jupiter-Trojan asteroids)是位于木星稳定拉格朗日点上与木星以相同周期围绕太阳稳定运行的小天体. 木星特洛伊小行星作为行星形成过程的活化石记录了行星起源、类地行星有机物与挥发物来源及行星系统整体演化的独特信息. 迄今仅通过地基望远镜或空间望远镜对它们进行过远距离光谱观测,它们仍是太阳系最神秘的天体群之一. 在物质成分上,细粒硅酸盐被认为是构成特洛伊小行星的重要物质. 过去认为特洛伊小行星形成在5 AU附近,新的动力学模型认为特洛伊小行星来自柯伊伯带. NASA的“露西”小行星探测任务(Lucy )将首次近距离探索这些神秘的小天体,有望为解开特洛伊小行星的身世之谜提供重要证据. 本文梳理了木星特洛伊小行星的观测历史、物理性质、光谱性质、物质组成以及形成和演化,并介绍了“露西”的探测任务与目标,为未来我国深空探测计划中的小行星探测提供支撑.

     

  • 图  1  内太阳系小行星分布示意图(蓝线为行星轨道,绿色为木星特洛伊小行星,白色为主带小行星,橘色为希尔达小行星)(修改自维基百科)

    Figure  1.  Distribution of internal solar system minor planets (The blue lines are the planet orbits, the green dots are the Jupiter-Trojan asteroids, the white dots are main-belt asteroids, and the orange dots are Hildas) (Credit: "InnerSolarSystem-en" by Mdf at English Wikipedia-Transferred from en.wikipedia to Commons. Licensed under Public Domain via Commons)

    图  2  两个光谱组的可见光和近红外平均光谱曲线(修改自Emery et al., 2010

    Figure  2.  Combined visible and near infrared average spectra of the two spectral groups (modified from Emery et al., 2010; Credit: AAS. Reproduced with permission)

    表  1  露西探测任务飞掠时间表

    Table  1.   Lucy mission flight time

    位置小行星光谱类型飞越时间
    主小行星带 (52246) Donaldjohanson C 2025-04-25
    特洛伊小行星L4群 (3548) Eurybates
    卫星 Queta
    C 2027-08-12
    (15094) Polymele P 2027-09-15
    (11351) Leucus D 2028-04-18
    (21900) Orus D 2028-11-11
    特洛伊小行星L5群 (617) Patroclus
    双星系统
    P 2033-03-03
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-05-06
  • 修回日期:  2023-06-17
  • 录用日期:  2023-06-19
  • 网络出版日期:  2023-06-28
  • 刊出日期:  2024-03-01

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