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2002 AA29 - Definition and Overview |
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Asteroid 2002 AA29 (also written 2002 AA29) is a near-Earth asteroid discovered in January 2001 by the LINEAR asteroid survey. The asteroid follows a "horseshoe orbit" that makes it come near the Earth every 95 years as it follows Earth's orbit around the Sun and will, in nearly 600 years, appear to orbit the planet. It measures about 60 metres across.
 Quasi-satellite orbit of 2002 AA 29 viewed from Earth's co-rotating frame. Illustration by Paul Wiegert. On January 8, 2003, the asteroid came within approximately 5.9 Gm (3.7 million miles) of Earth, its closest approach for almost a century.
Richard Gott and Edward Belbruno from Princeton University have speculated that 2002 AA29 might have formed together with Earth and Theia, the postulated planet that, according to the Giant Impact theory collided with Earth in its early history.
The orbit of the asteroid makes it relatively easy to retrieve rock samples and bring them to Earth for analysis.
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Example Usage of 2002 |
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Amy19741106: @sala2002 おいで＾＾ ホンマに楽しいでぇ |
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y2_naranja: 2002年の冬に、主にSQLServerを狙った攻撃が発生したとき、当時仕事してた企業さんで結構やられたマシンが出た。…気のせいでなければ大手ベンダのソフトウェア部門の会社だった気がするんですけど(汗)系列会社でも、古いウィルスに今更感染したとか大騒ぎになったことがあった。 |
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dhollings: FAMOUS TWEEP QUOTE "Men and nations behave wisely once they have exhausted all the other alternatives." ~Abba Eban (1915-2002) |
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