Migration of bodies to the Earth from different distances from the Sun
Abstract
Probabilities of collisions with the Earth for bodies with initial eccentricities equaled to 0.3 were calculated for different initial semi-major axes from 2 to 40 AU. The probabilities calculated for 250 bodies can differ by up to a factor of several tens for different runs with similar orbits. For 1500 bodies in each series of calculations, the probability of a collision of one body with the Earth was about 4.1×10^-6 for the disk between 5 and 7.5 AU, and it was 2.5×10^-6 for the disk between 7.5 and 10 AU. On average, for the region between 20 and 35 AU the probability could exceed 10^-6. For bodies initially located in the asteroid belt, the probabilities of their collisions with the Earth were about 10^-4-10^-3, i.e., were much greater than for bodies initially located beyond Jupiter's orbit.
- Publication:
-
European Planetary Science Congress
- Pub Date:
- September 2018
- Bibcode:
- 2018EPSC...12..516I