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'Minerva' mini-probe asteroid landing has failed
Can anyone compute the actual 'escape velocity' of Itokawa?
"Jim Oberg" wrote Minerva's mission to land on the asteroid Itokawa has failed. |
#2
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Itokawa escape velocity
Disregard my last posted question -- here's the answer:
THE HAYABUSA ASTEROID SAMPLE RETURN MISSION. H. Yano, Dept. of Planetary Science, Japan Aerospace Exploration Agency (JAXA)/Institute of Space and Astronautical Science (ISAS) 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, JAPAN http://www.lpi.usra.edu/meetings/am2005/pdf/7030.pdf "Assuming a bulk density of ordinary chondrites, the surface gravity of Itokawa is on the order of 10 micro-G, with an escape velocity = 20 cm/s." What was a station-keeping spacecraft DOING at that speed? |
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