For example, there are only a few asteroids in orbit with a long radius of 2.5AU, which is equivalent toOrbital period3.95 years, which is one third of Jupiter's orbital period (so called 1:3Track resonance)。Other orbital resonances are located at the position where the period is a simple numerical ratio to Jupiter. These weak resonances will only lead to the dispersion of asteroids. The prominence in the histogram is usually caused by the emergence of asteroid families
These gaps areDaniel KirkwoodFirst noticed in 1857, he also correctly explained that the gap is from Jupiter's orbital resonance.
In recent years, relatively few asteroids with high eccentricity orbits have been found in these gaps, such asAlinda family (Alinda family) and Griqua family.TheirEccentricity of trackIn the time benchmark of tens of millions of years, the slow increase will eventually result fromMegaplanetsThe area of resonance separated by close encounter.
