自然杂志 ›› 2013, Vol. 35 ›› Issue (6): 391-395.

• 特约专稿 •    下一篇

嫦娥二号的初步成果

欧阳自远   

  1. 中国科学院院士，中国科学院国家天文台，北京100012；中国科学院地球化学研究所，贵阳 550002
  • 收稿日期:2013-11-22 修回日期:2013-12-05 出版日期:2013-12-25 发布日期:2013-12-25

Chang’E-2 preliminary results

OU-YANG Zi-yuan   

  1. CAS Member, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
  • Received:2013-11-22 Revised:2013-12-05 Online:2013-12-25 Published:2013-12-25

PDF

651

被引次数

12

摘要： 嫦娥二号承担着试验直接奔月的新轨道，试验验证月面软着陆相关的关键技术的使命。嫦娥二号绘制了全月球7 m 分辨率的影像图和嫦娥三号着陆区虹湾分辨率为1 m 的高清图像，圆满完成各项科学探测任务。嫦娥二号在日地拉格朗日L2 点监测太阳活动，在距离地球700 万km处与4179 “战神”号小行星最近距离小于1 km的交会探测，拍摄到分辨率10 m的小行星形状、大小与表面结构的高清图像。当前嫦娥二号已经远离地球6 500 万km，成为绕太阳运行的人造小天体。

关键词: 嫦娥二号, 先导星, 日地拉格朗日L2 点, 4179“战神”号小行星

Abstract: Chang’E-2 (CE-2) was intended to test a new direct lunar entry orbit, and to test and verify key technologies related to soft landing on the Moon. CE-2 obtained 7 m resolution image map of the whole lunar surface and high resolution (1 m/pix) images of Sinus Iridum, the future landing site of Chang’E-3. CE-2 monitored solar activity at the Earth-Sun L2 Lagrangian point, and flew by asteroid 4179 Toutatis 7 000 000 km away from Earth. At a minimum rendezvous distance less than 1 km, CE-2 obtained high resolution images (10 m/pix) of Toutatis showing its shape, size, and surface structures. Currently CE-2 is 65 000 000 km away from the Earth that became a manmade small body orbiting the Sun.

Key words: Chang’E-2, forerunner satellite, Earth-Sun L2 Lagrangian point, asteroid 4179 Toutatis

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