JPL Orbit Diagram
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010%20AL30;orb=1WIKI
http://en.wikipedia.org/wiki/2010_AL30What is 2010 AL30? An Asteroid or Man Made Object
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2010 AL30 is a near-Earth asteroid (or possibly a comet) that was discovered on 10 January 2010.[1]
It has a diameter of between 33 and 50 feet. On January 13, 2010, it came within approximately 80,000 miles of Earth, which is about 1/3 of the distance from the Earth to the Moon (or 0.33 LD). Italian scientists Ernesto Guido and Giovanni Sostero told Ria Novosti it had an orbital period of almost exactly one year and might be a spent rocket booster.[
http://tamweb.tam.gov.tw/news/2010/201001/news2010011702.htm=> 經過最新觀測分析後的結果，2010 AL30的直徑約10-15公尺，有很強的雷達回波，自轉一圈僅需9分鐘。由於它的軌道近日點在金星軌道附近，遠日點在火星軌道附近，軌道傾角非常陡，且軌道與目前所有已知的近期太空任務的軌道都不相符，因此美國航太總署(NASA)太陽系動力學(Solar System Dynamics)網站現在認為2010 AL30應該是阿波羅型( Apollo-type)小行星，即繞太陽公轉的軌道會穿越地球軌道的近地小行星群之ㄧ。
然而在此同時，歐洲太空總署(ESA)Michael Khan分析金星特快車任務的軌道資料，認為2010 AL30很可能是搭載金星特快車升空的Fregat最上層火箭，因此無法完全排除它是人造天體的可能。
到底是 搭載金星特快車升空的Fregat最上層火箭
還是 阿波羅型( Apollo-type)小行星
