The Solar Nebula, Secular Resonances, Gas Drag, and the Asteroid Belt

摘要: Abstract We assume that the asteroids were initially distributed uniformly from Mars to Jupiter. Orbits between 3:2 resonance with Jupiter (0.763a(J), wherea(J) is Jupiter's semimajor axis) and chaotic because of overlapping mean motion resonances rapidly removed by close encounters However, in numerical simulations extending as long 108years, we have been unsuccessful removing 0.630 0.763a(J) (the 2:1 Jupiter), when Saturn only perturbers. now suggest a combination secular apsidal rotations asteroids, moved outward gravitational potential primitive solar nebula gas drag nebula, those asteroids. A minimum mass will move one its present location at 0.40a(J) resonance. The sweeping pumped up eccentricities causing many outer belt be ejected high also increased relative greatly enhancing efficiency drag, which caused other spiral into inner Solar System. That on time scale 104–105years, cleared asteroid exterior remaining an average value about 0.15. found much longer would all while shorter not initial low eccentricities.