planetsstability/ planetary satellite orbits stabilitycelestial mechanicsplanetary orbits eccentricityperiodic orbits familiesunstable orbitsThe effect of the eccentricity of a planet's orbit on the stability of the orbits of its satellites is studied. The model used is the elliptic Hill case of the ...
A perfectly circular orbit has an eccentricity of zero. Elliptical orbits have values between 0 and 1 with higher values indicating a more eccentric orbit. An eccentricity of exactly 1 is a parabolic orbit and anything greater than that is a hyperbolic orbit. The orbits of the planets are ...
Eccentricity is a measure of how an orbit deviates from circular. A perfectly circular orbit has an eccentricity of zero; higher numbers indicate more elliptical orbits. Neptune, Venus, and Earth are the planets in our solar system with the least eccentric orbits. Pluto and Mercury are the ...
The orbits of the outer two known planets orbiting Upsilon Andromedae are remarkably eccentric. Planet C possesses an orbital eccentricity of e1 = 0.253. For the more distant planet D, e2 = 0.308. Previous dynamical analyses strongly suggest that the two orbits are nearly co-planar and are ...
2d) by a temporary weakening of the AMOC. Chaotic orbital transition at ~56 Ma The orbits of planets in the Solar System are not stable (chaotic) at timescales of tens to hundreds of Myr48,53. The chaotic diffusion in the Solar System hampers the establishment of precise astronomical ...
Contrary to our own Solar System, many of these planets have highly eccentric orbits (∼0.1–0.6), making the use of usual analytical perturbative models very limited. Even so, several attempts have been made to apply classical expansions of the resonant Hamiltonian to these cases, leading to...
The shape of the orbits of all planets in our Solar system The term that is equal to a planet's average distance from the sun The term that defines one of two fixed points from which an ellipse can be generated The term that means the extent to which an orbit deviates from a circle ...
adiabati-callywithdiskdepletion,themodulationamplitudeoftheplanets’relativephaseofperiapseisapproximatelyinvariantdespitethetime-asymmetricalexchangeofangularmomentumbetweenplanets.However,astheyoungplanets’orbitspassthroughastateofsecularresonance,theirmeaneccentricitiesundergosystematicquantitativechanges.Forapplications,we...
Solar Radiation Pressure Resonances in Low Earth Orbits The aim of this work is to highlight the crucial role that orbital resonances associated with solar radiation pressure can have in Low Earth Orbit. We revi... AE Maria,S Giulia,R Alessandro,... - 《Monthly Notices of the Royal Astronom...
However, the time spent on these orbits remains smaller than 1 Myr as confirmed by the study of the evolutions of 11 observed SEAs which also reveal the action of various mechanisms such as close approaches to planets and/or secular resonances. Therefore, our results present some mechanisms ...