China's first dedicated asteroid mission |
China's first dedicated asteroid mission |
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Junior Member ![]() ![]() Group: Members Posts: 86 Joined: 12-October 05 From: Beijing Member No.: 526 ![]() |
http://wb.lzbs.com.cn/html/2012-12/27/content_420157.htm
China's first dedicated asteroid mission will be powered by xenon ion engine. The engine has successfully tested in orbit on Shijian-9 satellite on November 7, 2012. The probe will visit three asteroids: make a flyby of the first and take pictures, orbit the second, and land on the third. According to earlier reports, potential targets include 12711 Tukmit, 99942 Apophis and (175706) 1996 FG3. |
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10193 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
One of those papers concerns shape modelling of Toutatis based on a combination of radar and optical data, the latter from Chang'E 2. One caveat, don't assume the axis of the shape model really coincides with a rotation axis. Their grid matches the one used in a radar modelling paper some years ago (referenced in this paper), but it is not tied to rotation, which is complex for this asteroid. I prefer a rotation axis running the length of the body (slow long axis mode rotation). Normally the rotation axis is the shortest axis, but slow rotators lack the angular momentum to force that to happen.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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