Target asteroid and impactor orbit simulation method based on dynamics

The invention discloses a target asteroid and impactor orbit simulation method based on dynamics, and belongs to the technical field of aerospace technology and application thereof. The objective of the invention is to solve the problem of poor precision and stability in the existing asteroid impact simulation process. According to the method, an asteroid orbit kinetic equation is established, the position vector is substituted into the asteroid orbit kinetic equation, and a motion orbit model of the asteroid is obtained through recursion; establishing an impactor orbital kinetic equation, substituting the initial three-dimensional position, speed and acceleration of the impactor into the impactor orbital kinetic equation, and recursively obtaining a first-section orbital model from the initial position of the impactor to the distance Skm from the target asteroid by combining with the motion orbital model of the target asteroid; and establishing a full kinetic equation of the end section of the impactor by us