Asteroid 1950 DA's Encounter with Earth in 2880: Physical Limits of Collision Probability Prediction

@article{Giorgini2002Asteroid1D,
  title={Asteroid 1950 DA's Encounter with Earth in 2880: Physical Limits of Collision Probability Prediction},
  author={J. Giorgini and S. Ostro and L. Benner and P. Chodas and S. Chesley and R. S. Hudson and M. Nolan and A. Klemola and E. Standish and R. Jurgens and R. Rose and A. Chamberlin and D. Yeomans and J. Margot},
  journal={Science},
  year={2002},
  volume={296},
  pages={132 - 136}
}
Integration of the orbit of asteroid (29075) 1950 DA, which is based on radar and optical measurements spanning 51 years, reveals a 20-minute interval in March 2880 when there could be a nonnegligible probability of the 1-kilometer object colliding with Earth. Trajectory knowledge remains accurate until then because of extensive astrometric data, an inclined orbit geometry that reduces in-plane perturbations, and an orbit uncertainty space modulated by gravitational resonance. The approach… Expand
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