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gptkbp:instanceOf
|
gptkb:satellite
|
|
gptkbp:apogee
|
3969 km
|
|
gptkbp:communication
|
gptkb:Antenna
|
|
gptkbp:COSPAR_ID
|
gptkb:1958-002B
|
|
gptkbp:countryOfOrigin
|
gptkb:United_States
|
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gptkbp:decayDate
|
not decayed (as of 2024)
|
|
gptkbp:diameter
|
16.5 cm
|
|
gptkbp:inclination
|
34.25°
|
|
gptkbp:launchDate
|
1958-03-17
|
|
gptkbp:launchSite
|
gptkb:Cape_Canaveral
|
|
gptkbp:launchVehicle
|
gptkb:Vanguard_rocket
|
|
gptkbp:manufacturer
|
gptkb:Naval_Research_Laboratory
|
|
gptkbp:mass
|
1.47 kg
|
|
gptkbp:missionType
|
Earth science
|
|
gptkbp:notableFor
|
first satellite to use solar power
oldest human-made object still in orbit
|
|
gptkbp:notableProject
|
gptkb:Project_Vanguard
|
|
gptkbp:operator
|
gptkb:United_States_Navy
|
|
gptkbp:orbitType
|
Medium Earth orbit
134.2 minutes
|
|
gptkbp:perihelion
|
654 km
|
|
gptkbp:powerSource
|
solar cells
|
|
gptkbp:purpose
|
geodetic measurements
atmospheric density study
|
|
gptkbp:shape
|
gptkb:butter
|
|
gptkbp:status
|
inactive
|
|
gptkbp:bfsParent
|
gptkb:Project_Vanguard
gptkb:Vanguard_rocket
gptkb:Vanguard_satellite_program
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gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Vanguard 1
|