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433 Eros is a near-Earth asteroid (NEA) discovered in 1898, and the first asteroid to be orbited by a probe (in 2000). It is an S-type asteroid approximately 34.4×11.2×11.2 km in size, the second-largest NEA after 1036 Ganymed, and belongs to the Amor group.
Eros is a Mars-crosser asteroid, the first known to come within the orbit of Mars. Objects in such an orbit can remain there for only a few hundred million years before the orbit is perturbed by gravitational interactions. Dynamical integrations suggest that Eros may evolve into an Earth-crosser within as short an interval as 2 million years, and has a roughly 50% chance of doing so over a time scale of 108–109 years. It is a potential Earth impactor, believed to be larger than the impactor that created the Chicxulub Crater that led to the extinction of the dinosaurs.
Wikipedia Entry for all of their entry:
1 LD = Lunar Distance = ~384,000 kilometersSource: NASA/JPL http://neo.jpl.nasa.gov/ca/
|433 Eros||2012-Jan-31||0.1787||69.5 LD||17 km Dia.||11.2||5.95|
Related Eros Parallax Project for Students and Teachers Worldwide
by Astronomers Without Borders (AWB):