NASA'S Lucy Mission to Trojan Asteroids: Unraveling the History of the Outer Solar System.

IF 9.1 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Space Science Reviews Pub Date : 2025-01-01 Epub Date: 2025-07-03 DOI:10.1007/s11214-025-01173-7
Harold F Levison, Simone Marchi, Keith S Noll, John R Spencer, Catherine B Olkin, Thomas S Statler
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引用次数: 0

Abstract

Lucy is a NASA Discovery-class mission to send a highly capable and robust spacecraft to investigate primitive bodies near both the L4 and L5 Lagrange points with Jupiter; the Jupiter Trojan asteroids. This heretofore unexplored population of planetesimals from the outer planetary system holds vital clues to deciphering the history of the Solar System. Due to an unusual and fortuitous orbital configuration, Lucy will perform a comprehensive investigation that visits eight Trojans, including all the recognized taxonomic classes, a collisional family member and a near equal-mass binary. It will visit objects with diameters ranging from roughly 1 to 100 km. In particular, Lucy will perform flybys of (3548) Eurybates and its satellite Queta (L4, C-type), (15094) Polymele and its currently unnamed satellite (L4, P-type), (11351) Leucus (L4, D-type), (21900) Orus (L4, D-type), and the (617) Patroclus-Menoetius binary (L5, P-types). This diverse array of targets will supply invaluable constraints on the formation and early dynamical evolution of the giant planets. In addition, Lucy will visit two main-belt asteroids, (152830) Dinkinesh and (52246) Donaldjohanson, in order to practice its encounters. Lucy's payload suite consists of a color camera and infrared imaging spectrometer, a high resolution panchromatic imager, and a thermal infrared spectrometer. Additionally, two spacecraft subsystems will also contribute to the science investigations: the terminal tracking cameras will supplement imaging during closest approach and the telecommunication subsystem will be used to measure the mass of the Trojans. Lucy launched on October 16, 2021 and will have encounters with the Trojans from August 2027 until March 2033.

美国宇航局的“露西”号特洛伊小行星任务:揭开外太阳系的历史。
“露西”是美国国家航空航天局的“发现”级任务,它将发射一艘功能强大的航天器,调查木星L4和L5拉格朗日点附近的原始天体;木星特洛伊小行星。迄今为止,这些来自外行星系统的未被探索的星子群为破译太阳系的历史提供了重要的线索。由于一个不寻常的和偶然的轨道配置,露西将进行一次全面的调查,访问八个特洛伊,包括所有公认的分类类别,一个碰撞家族成员和一个接近等质量的双星。它将访问直径在1到100公里之间的物体。特别是,露西将执行飞掠(3548)Eurybates及其卫星Queta (L4, c型),(15094)Polymele及其目前未命名的卫星(L4, p型),(11351)Leucus (L4, d型),(21900)Orus (L4, d型),以及(617)Patroclus-Menoetius双星(L5, p型)。这种多样化的目标阵列将为巨行星的形成和早期动态演化提供宝贵的约束。此外,“露西”还将造访两颗主带小行星,(152830)Dinkinesh和(52246)Donaldjohanson,以练习与小行星的相遇。“露西”号的有效载荷套件包括一台彩色摄像机和红外成像光谱仪、一台高分辨率全色成像仪和一台热红外光谱仪。此外,两个航天器子系统也将为科学调查做出贡献:终端跟踪摄像机将在最接近时补充成像,电信子系统将用于测量特洛伊的质量。“露西”于2021年10月16日发射升空,将于2027年8月至2033年3月与特洛伊人相遇。
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来源期刊
Space Science Reviews
Space Science Reviews 地学天文-天文与天体物理
CiteScore
19.70
自引率
3.90%
发文量
60
审稿时长
4-8 weeks
期刊介绍: Space Science Reviews (SSRv) stands as an international journal dedicated to scientific space research, offering a contemporary synthesis across various branches of space exploration. Emphasizing scientific outcomes and instruments, SSRv spans astrophysics, physics of planetary systems, solar physics, and the physics of magnetospheres & interplanetary matter. Beyond Topical Collections and invited Review Articles, Space Science Reviews welcomes unsolicited Review Articles and Special Communications. The latter encompass papers related to a prior topical volume/collection, report-type papers, or timely contributions addressing a robust combination of space science and technology. These papers succinctly summarize both the science and technology aspects of instruments or missions in a single publication.
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