On the basis of the method of action-angle variables the conditions of closed orbits under the action of general power-type gravitationpotential are discussed on this paper.
本文采用作用角变量的方法,讨论了闭合轨道在一般幂次型引力势作用下的情况。
2
The purpose of this paper is to give an analytical expression of a tri axes ellipsoid body's gravitationpotential with layered, focus tri axes ellipsoidal density distribution.