منابع مشابه
Extrasolar Planet Orbits and Eccentricities
The known extrasolar planets exhibit many interesting and surprising features—extremely shortperiod orbits, high-eccentricity orbits, mean-motion and secular resonances, etc.—and have dramatically expanded our appreciation of the diversity of possible planetary systems. In this review we summarize the orbital properties of extrasolar planets. One of the most remarkable features of extrasolar pl...
متن کاملOn the Chaotic Orbits of Disc-Star-Planet Systems
Following Tancredi, Sànchez and Roig (2001)’s criteria of chaos, two ways of setting initial velocities are used in the numerical surveys to explore the possible chaotic and regular orbits for the disc-star-planet systems. We find that the chaotic boundary does not depend much on the disc mass for Type I initial condition, but can change a lot for different disc masses for Type II initial condi...
متن کاملApsidal Behavior Among Planetary Orbits: Testing the Planet-Planet Scattering Model
Planets in extrasolar systems tend to interact such that their orbits lie near a boundary between apsidal libration and circulation, a “separatrix”, with one eccentricity periodically reaching near-zero. One explanation, applied to the υ And system, assumed three original planets on circular orbits. One is ejected, leaving the other two with near-separatrix behavior. We test that model by integ...
متن کاملAN ACCURATE SOLUTION FOR THE TWODIMENSIONAL MODEL OF ALBITE USING STATISTICAL MECHANICS
A two-dimensional model of Al, Si ordering in alkali feldspar is formulated and used to calcul~tea ccurately the configurational entropy for the model. For this purpose, a new method called Independent Basic Unit or IBU is introduced. To compare the results with the exact values, this method is applied to the onedimensional model of albite. The results given by IBU are found to be accurate ...
متن کاملNumerical integration of satellite orbits around an oblate planet
A recurrent power series (RPS) method is constructed for the numerical integration of the equations of motion of a planet and its N satellites. The planet is considered as an oblate spheroid with the oblateness potential calculated up to the factor J4. The efficiency of the RPS method in terms of accuracy and speed is compared to that of the commonly used 10th-order Gauss-Jackson backward diffe...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2015
ISSN: 1538-4357
DOI: 10.1088/0004-637x/807/2/157