🌐EnglishEnglishEspañolFrançaisItalianoPolskiTürkçeРусский中文EntityQ3258317· pop 9· linked from 9 articlesDermott's lawformula to determine satellite orbital periodAvailable in 9 languagesEspañolFrançais中文ItalianoNorwegianPolskiSlovenianUkrainianvia Wikidata sitelinks · CC0ConnectionsastronomyEntitySolar SystemEntityCategoriesEquations of astronomyOrbits