A reduced estimate of the number of kilometre-sized near-Earth asteroids

  title={A reduced estimate of the number of kilometre-sized near-Earth asteroids},
  author={D. Rabinowitz and E. Helin and K. Lawrence and S. Pravdo},
  • D. Rabinowitz, E. Helin, +1 author S. Pravdo
  • Published 2000
  • Geology, Medicine
  • Nature
  • Near-Earth asteroids are small (diameters < 10 km), rocky bodies with orbits that approach that of the Earth (they come within 1.3 AU of the Sun). Most have a chance of approximately 0.5% of colliding with the Earth in the next million years. The total number of such bodies with diameters > 1 km has been estimated to be in the range 1,000–2,000, which translates to an approximately 1% chance of a catastrophic collision with the Earth in the next millennium. These numbers are, however, poorly… CONTINUE READING
    137 Citations

    Topics from this paper

    The hazard of near-Earth asteroid impacts on earth
    • 120
    • PDF
    The rate of small impacts on Earth
    • 120
    • Highly Influenced
    Understanding the distribution of near-earth asteroids
    • 162
    • PDF
    Near-Earth Asteroid Surveys
    • 4
    An estimate of the terrestrial influx of large meteoroids from infrasonic measurements
    • 43
    • Highly Influenced
    • PDF
    Dealing with the Impact Hazard
    • 80
    • PDF


    The size and shape of the near-Earth asteroid belt
    • 45
    The size distribution of the earth-approaching asteroids
    • 98
    Search techniques for near-earth asteroids
    • 19
    Hazards Due to Comets and Asteroids
    • 444
    Scanning with charge-coupled devices
    • 44