CASTAway: An asteroid main belt tour and survey
CASTAway: An asteroid main belt tour and survey
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DOI：
10.1016/j.asr.2017.10.021
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发表时间：
2018-10-15
影响因子：
2.6
通讯作者：
Tosh, I.
中科院分区：
文献类型：
--
作者：
Bowles, N. E.;Snodgrass, C.;Tosh, I.
CASTAway是一个探索太阳系主要小行星带的使命概念。小行星和彗星为我们了解太阳系的形成和演变提供了一个窗口，这些物体的组成可以通过使用光谱技术的天基遥感来推断。小行星群组成的变化为太阳系的动态演变提供了一个示踪剂。该使命结合了对10，000多个天体的远距离（点源）望远镜观测、有针对性地近距离接触10-20颗小行星和偶然搜索，以便将较小（例如10米）天体的分布限制在一个单一的概念中。CASTAway有一个经过仔细定向的轨道，穿过小行星带，将提供多尺度的主带综合调查。科学有效载荷包括一个直径为50厘米的望远镜，其中包括一个低分辨率（R = 30-100）光谱仪和可见背景成像仪、一个供飞越期间使用的热成像仪（例如6-16微米）和经改进的星星跟踪仪照相机，以探测小型（类似于10米）小行星。CASTAway航天器和有效载荷具有高水平的技术准备，旨在适应欧洲航天局中等使命的方案和成本上限，同时大大增加对太阳系的了解。(C)2017 COSPAR。由爱思唯尔有限公司出版。保留所有权利。
CASTAway is a mission concept to explore our Solar System's main asteroid belt. Asteroids and comets provide a window into the formation and evolution of our Solar System and the composition of these objects can be inferred from space-based remote sensing using spectroscopic techniques. Variations in composition across the asteroid populations provide a tracer for the dynamical evolution of the Solar System. The mission combines a long-range (point source) telescopic survey of over 10,000 objects, targeted close encounters with 10-20 asteroids and serendipitous searches to constrain the distribution of smaller (e.g. 10 m) size objects into a single concept. With a carefully targeted trajectory that loops through the asteroid belt, CASTAway would provide a comprehensive survey of the main belt at multiple scales. The scientific payload comprises a 50 cm diameter telescope that includes an integrated low-resolution (R = 30-100) spectrometer and visible context imager, a thermal (e.g. 6-16 mu m) imager for use during the flybys, and modified star tracker cameras to detect small (similar to 10 m) asteroids. The CASTAway spacecraft and payload have high levels of technology readiness and are designed to fit within the programmatic and cost caps for a European Space Agency medium class mission, while delivering a significant increase in knowledge of our Solar System. (C) 2017 COSPAR. Published by Elsevier Ltd. All rights reserved.