orbital resonance


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orbital resonance

An effect in celestial mechanics that arises when two orbiting bodies have periods of revolution that are in a simple integer ratio allowing each body to have a regularly recurring gravitational influence on the other. Orbital resonance may stabilize the orbits and protect them from perturbation, as in the case of the Trojan group of asteroids, which are held in place by a 1:1 resonance with Jupiter. On the other hand, orbital resonance may destabilize one of the orbits, ejecting the body concerned, changing the eccentricity of its path, or sending it into a different orbit. This second effect of orbital resonance accounts for why there are virtually no asteroids in certain regions of the main asteroid belt (see Kirkwood gaps). Laplace resonance is a form of orbital resonance that occurs when three or more orbiting objects have a simple integer ratio between their orbital periods. For example, the Jovian satellites Io, Europa, and Ganymede have periods of revolution in the ratio 4:2:1.
References in periodicals archive ?
The group took the orbital resonance frequencies of Saturn's moons and the dust particles in its rings and (http://www.ibtimes.com/scientists-convert-nasas-cassini-spacecraft-data-music-2584502) converted them into sounds that humans can perceive , shifting them along to the range that our ears can pick up.
A property that is associated with an orbital resonance, or a mean-motion orbital resonance, in particular.
But there are difficulties with this interpretation, since the existence of gaps involves orbital resonance phenomena, which lead to stable orbits, for example, it suffices that two planets are at a greater distance to 3.5 RH (Hill's radii) [2] without however, the gaps are too close to each other, which implies interaction of planets each other, generating an orbital instability which would destroy the observed gaps.
"Our best guess is that Saturn had a similar collection of moons before, but their orbits were disturbed by a special kind of orbital resonance involving Saturn's motion around the Sun.
"The only way they can 'get along' and become stable is if they enter an orbital resonance."
Dynamicists already suspect that the new find might be in an orbital resonance with Neptune.
In QCM the predicted period ratios for the orbital resonance conditions in the last column of Table 1 are calculated from the m values using
The six inner planets stay in place due to orbital resonance, which means they all have a slight gravitational pull on one another as they orbit the star together.
Astronomers had found that the Cassini Division maintains a 1:2 orbital resonance with Saturn's innermost known moon, Mimas.
Their stability can to some extent be explained by the phenomenon of orbital resonance, but this explanation is certainly not enough.
In QCM the orbital resonance condition is given by the period ratio given in the last column calculated from
It's quite elongated, inclined to the ecliptic plane that contains the orbits of the eight planets, and in a 2:3 orbital resonance with Neptune, going around the Sun twice every three Neptune years.