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Research for the target asteroids of next asteroid sample-return mission

下一次小行星采样返回任务目标小行星研究

基本信息

批准号：
17340133
负责人：
ABE Masanao
金额：
$ 5.12万
依托单位：
Japan Aerospace Exploration Agency
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17340133/
关键词：
Planetary exploration Astronomy Aerospace engineering Solid geophysics Space science

项目摘要

At present, examinations of the explorations for small solar system bodies, which are following the "Hayabusa" mission, are advanced.In the next small bodies exploration, we are planning to explore more primitive bodies than S-type asteroids which were investigated by "Hayabusa" mission.In specially, C-type asteroids are considered as the targets and it is necessary to detect many primitive type asteroids in the near-Earth-asteroids with which a spacecraft reaches easily.In this research, at first, we created the list of near-Erath-asteroid with which a spacecraft reaches easily.As for each listed asteroid, we investigated its observing opportunity. And then, colorimetric observations were conducted for the asteroid which have observing opportunity to estimate the taxonomic type of these asteroids.Observation uses the 1.05-m Schmidt telescope of the University of Tokyo Kiso observatory, and the 1-m telescope of the Taiwan Lulin astronomical observatory.30 asteroids were observed in thr … More ee years until now, and it has succeeded in estimating the taxonomic type for 20 asteroids. Five were C-type asteroids among these.Although the number of the C-type asteroids which a spacecraft reach easily was only seven before our research, total number of the C-type asteroids becomes 15 including the result of our research and the observation result of other researcher at present.This number is mostly in agreement with. the prediction before starting this research.As the result of increasing the number of C-type asteroids which are easy to investigate by spacecrafts, the design flexibility of an exploration plan goes up and the feasibility of the mission is improving.Based on these results, 1999JU3 which is C-type asteroid is chosen as a leading candidate for the "Hayabusa 2" missions in which the spacecraft will be launched in early 2010s.In this research, the concrete orbital plan of the spacecraft in the case of exploring 1999JU3 was considered. According to this investigation, it was shown clearly that we can explore this asteroid using the spacecraft designed comparable as the "Hayabusa" spacecraft. Less

目前，继“隼鸟”任务之后的太阳系小天体探测研究正在推进。在接下来的小天体探测中，我们计划探索比“隼”任务所探测的S型小行星更多的原始天体。特别是以C型小行星为目标，需要在小天体探测中探测到更多的原始型小行星。航天器容易到达的近地小行星。在这项研究中，首先，我们创建了航天器容易到达的近地小行星列表。对于列出的每颗小行星，我们调查了其观测机会。然后，对有观测机会的小行星进行比色观测，以估计这些小行星的分类类型。观测使用东京大学木曾天文台的1.05米施密特望远镜和台湾鹿林天文台的1米望远镜。至今已观测到30颗小行星，并已成功估计 20 颗小行星的分类类型。其中有5颗是C型小行星。虽然在我们的研究之前，航天器容易到达的C型小行星的数量只有7个，但包括我们的研究结果和目前其他研究者的观测结果，C型小行星的总数达到了15个。这个数字大部分是一致的。由于易于航天器探测的C型小行星数量的增加，探索计划的设计灵活性提高，任务的可行性也不断提高。基于这些结果，C型小行星1999JU3被选为“隼鸟2号”任务的主要候选者，该航天器将于年初发射。 2010年代。本研究考虑了探索1999JU3情况下航天器的具体轨道方案。这次调查清楚地表明，我们可以使用与“隼鸟”号航天器相当的航天器来探索这颗小行星。较少的