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1999 AO10
is an Aten near-Earth object.〔http://www.minorplanetcenter.net/iau/lists/Atens.html〕 It is orbiting with a semi-major axis of 0.9112417 AU with an eccentricity of 0.1122073 and a period of 0.87 years. The initial orbital elements were determined based on 16 observations made between January 13–15, 1999.
==Manned mission==
NASA has proposed a manned mission to the object during 2025 or later. is one of a handful of objects within the acceptable range for the mission and is also one of the largest objects that meets the qualifications. In this proposal, a pair of docked Orion spacecraft would spend 14 days at the object, for a total mission time of 155 days. The astronauts would return samples and help test spacefaring capabilities for a future Mars mission. The manned mission would be preceded by an unmanned probe to be sent in 2019 at the earliest.〔http://www.nasaspaceflight.com/2010/01/nasas-flexible-path-2025-human-mission-visit-asteroid/〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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