Home›1959 in the United States›Vanguard 2🌐EnglishEnglishBahasa IndonesiaDeutschFrançaisItalianoNederlandsPolskiPortuguêsРусскийالعربية中文日本語EntityQ1076866· pop 20· linked from 58 articlesVanguard 2Also known as Vanguard IIEarth-orbiting weather satelliteWikidata factsMass10.2Orbital period125.6ImageVanguard2.jpgShow 7 more factsCommons categoryVanguard IIUTC date of spacecraft launch1959-02-17semi-major axis of an orbit8317.7orbital eccentricity0.166orbital inclination32.88apoapsis3320.6periapsis559Sources (3)wikidata.orgAvailable in 19 languagesFrançais中文РусскийPortuguêsItalianoالعربيةBahasa IndonesiaCzechFinnishGalicianHungarianConnectionsUnited States Naval Research LaboratoryEntityInternational Standard Book NumberEntityCategories1959 in the United StatesDerelict satellites orbiting EarthProject VanguardSource attributionSpacecraft launched in 1959Weather satellites of the United States