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gptkbp:instance_of
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gptkb:satellite
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|
gptkbp:collaboration
|
gptkb:none
|
|
gptkbp:collection
|
telemetry
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gptkbp:contribution
|
Earth's radiation belts study
|
|
gptkbp:data_transmission
|
radio signals
|
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gptkbp:data_type
|
geophysical data
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|
gptkbp:design
|
spherical
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gptkbp:dimensions
|
15 cm diameter
|
|
gptkbp:duration
|
1955-1964
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gptkbp:frequency
|
108 MHz
|
|
gptkbp:has_programs
|
gptkb:Project_Vanguard
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|
gptkbp:has_units
|
gptkb:5
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|
gptkbp:historical_significance
|
early space exploration
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Vanguard satellites
|
|
gptkbp:impact_on_space_race
|
gptkb:significant
|
|
gptkbp:launch_date
|
gptkb:1955
gptkb:1964
December 8, 1955
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|
gptkbp:launch_event
|
mixed success
|
|
gptkbp:launch_failure
|
gptkb:Vanguard_TV3
|
|
gptkbp:launch_site
|
gptkb:Cape_Canaveral
|
|
gptkbp:launch_vehicle
|
gptkb:Vanguard_rocket
|
|
gptkbp:launched
|
gptkb:United_States
|
|
gptkbp:manufacturer
|
gptkb:Jet_Propulsion_Laboratory
|
|
gptkbp:notable_feature
|
first satellite to use solar cells
|
|
gptkbp:notable_mission
|
gptkb:Vanguard_1
|
|
gptkbp:operational_status
|
decommissioned
|
|
gptkbp:orbital_period
|
approximately 100 minutes
|
|
gptkbp:power_source
|
solar cells
|
|
gptkbp:purpose
|
gptkb:scientific_research
|
|
gptkbp:scientific_instruments
|
cosmic ray detectors
|
|
gptkbp:significance
|
gptkb:first_successful_U._S._satellite_program
|
|
gptkbp:speed
|
gptkb:1960
|
|
gptkbp:success_rate
|
60%
|
|
gptkbp:successor
|
Explorer program
|
|
gptkbp:track
|
ground-based radar
|
|
gptkbp:weight
|
1.5 kg
|
|
gptkbp:bfsParent
|
gptkb:Titan_rocket
|
|
gptkbp:bfsLayer
|
5
|