astronoomia haru, mis peamiselt teoreetilise mehaanika meetodeid rakendades käsitleb taevakehade liikumist gravitatsiooniväljas
the branch of science that investigates the dynamic relationships amond bodies of the solar system and deals with the relative motions of celestial bodies under the influence of gravitational fields
The term celestial mechanics is sometimes assumed to refer only to the analysis developed for the motion of point mass particles moving under their mutual gravitational attractions, with emphasis on the general orbital motions of solar system bodies.