Interim definitive orbits determined at the NASA computing center
26.02.1960
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NASA computing center predictions
NTRS | 1960
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AIAA | 1992
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Engineering Index Backfile | 1960
Interim definitive orbit for satellite 1958-Gamma, Explorer-III
Engineering Index Backfile | 1960
Interim definitive orbit for satellite 1959 Alpha Vanguard-II
Engineering Index Backfile | 1960