Orbiiti geomeetriliselt iseloomustavaid - peatelge, ekstsentrilisust, kallet, sõlmi ja apsiide (nt Maa kaaslaste perigee ja apogee) nimetatakse orbiidi elementideks.
The specific roles of ITU-R within the framework of this mission are: • to effect allocation of bands of the radio frequency spectrum, the allotment of radio frequencies and the registration of radio frequency assignments and of associated orbital positions in the geostationary satellite orbit in order to avoid harmful interference between radio stations of different countries;'
