Inactive
Vanguard 1
A grapefruit-sized solar-powered test satellite, Vanguard 1 fell silent in 1964 but remains in a high elliptical orbit. It is expected to stay aloft for centuries, a quiet relic of the dawn of the Space Age.
Technical specifications
CATEGORY
Historic
TYPE
Sphere
COUNTRY
United States
OPERATOR
U.S. Navy
LAUNCH DATE
Mar 17, 1958
LAUNCH SITE
Cape Canaveral
ORBIT CLASS
MEO
ALTITUDE · KM
2,235
ORBITAL PERIOD · MIN
132.6
INCLINATION · DEG
34.25
APOGEE · KM
3,816
PERIGEE · KM
654
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