Atens, Apollos, & Amors.

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Presentation transcript:

Atens, Apollos, & Amors

There are 3 general orbits asteroids can make…

There are 3 general orbits asteroids can make… Apollo Aten Amor

Apollos Earth-crossing Semi-major axis LARGER than Earth (a > 1.0) Represent 62% of known asteroids

Atens Earth-crossing Semi-major axis SMALLER than Earth (a < 1.0) Represent 6% of known asteroids

Amors Earth-approaching, but NEVER crossing Semi-major axis LARGER than Earth (a > 1.0) Represent 32% of known asteroids

Bringing All Together Which asteroid type has the highest eccentricity? Which one or ones has the lowest eccentricity? What could cause an Amor, which doesn’t cross Earth, to start moving through our orbit? Which asteroids should we be most concerned about?