Home›Astrometry›polar motion🌐EnglishEnglishDeutschEspañolItalianoPortuguêsSvenskaРусскийالعربيةفارسی한국어中文日本語EntityQ2167025· pop 13· linked from 50 articlespolar motionmotion of Earth's rotational axis relative to its crustAvailable in 13 languagesEspañolDeutsch中文日本語PortuguêsItalianoالعربيةAzerbaijaniLithuanianSvenskaفارسیConnectionsstellar precessionEntityminute and second of arcEntityCategoriesAstrometryGeodesyPrecession