Identification of asteroid dynamical familiesProblems involved in the identification of asteroid dynamical families are discussed, and some methodological guidelines are presented. Asteroid family classifications are reviewed, and differences in the existing classifications are examined with special attention given to the effects of observational selection on the classification of family membership. The paper also discusses various theories of secular perturbations, including the classical linear theory, the theory of Williams (1969), and the higher order/degree theory of Yuasa (1973).
Valsecchi, G. B. (Consiglio Nazionale delle Ricerche Rome, Italy)
Carusi, A. (CNR Instituto di Astrofisica Spaziale, Rome, Italy)
Knezevic, Z. (Astronomska Opservatorija Belgrade, Yugoslavia)
Kresak, L. (Slovenska Akademia Vied Astronomicky Ustav, Bratislava, Czechoslovakia)