🌐EnglishEnglishDeutschFrançaisNederlandsPolskiTiếng Việtفارسی日本語EntityQ1586270· pop 5· linked from 6 articlesVariation (astronomy)periodic perturbation of the lunar orbitAvailable in 5 languagesDeutschNorwegian NynorskTiếng Việtفارسیvia Wikidata sitelinks · CC0ConnectionsEquation of the centerEntityastronomyEntityCategoriesCelestial mechanicsOrbital perturbationsOrbit of the Moon