A computerized algebraic utility for the construction of a first order analytical orbit predictor
- Paper ID
IAF-84-337
- author
- company
Matra Espace
- country
France
- year
1984
- abstract
A MACSYMA computerized algebraic utility is used to derive analytical expressions of the first order variations of the orbital elements and time over one revolution, by the stroboscopic method, for a spacecraft whose motion is pertubed by conservative accelerations (Non-Sphericity of the Central Body ; Attraction of a Third Body). The elements used are non-singular (Equinoctial elements). Some computational aspects are emphasized (Intrinsic vs. user-defined factorization rules ; algebraic manipulation program general architecture ; validation w.r.t. numerical integration, etc..) and one gives preliminary results.