01661oam 2200469 450 991070967760332120180524075449.0(CKB)5470000002471458(OCoLC)303646628(OCoLC)795741764(EXLCZ)99547000000247145820090212d1958 ua 0engurunu||||||||txtrdacontentcrdamediacrrdacarrierOrbital data and preliminary analyses of Satellites 1957 Alpha and 1957 Beta /compiled by F.L. Whipple, L.G. Boyd, J.A. Hynek, and G.F. ShillingWashington, D.C. :Smithsonian Institution,1958.1 online resource (vii pages, pages 189-347) illustrations, mapSmithsonian contributions to astrophysics ;volume 2, number 10Includes bibliographical references (page 347).Sputnik satellitesArtificial satellitesSoviet UnionTrackingSputnik satellites.Artificial satellitesTracking.Whipple Fred L(Fred Lawrence),1906-2004,462897Boyd Lyle Gifford1907-Hynek J. Allen(Joseph Allen),1910-1986,Schilling G. F.Smithsonian Astrophysical Observatory,MKNMKNOCLCEOCLCOOCLCQOCLCFOCLCQGPOBOOK9910709677603321Orbital data and preliminary analyses of Satellites 1957 Alpha and 1957 Beta3499879UNINA