|
gptkbp:instance_of
|
gptkb:satellite
|
|
gptkbp:analysis
|
Analyzed by scientists
|
|
gptkbp:collaboration
|
No
|
|
gptkbp:collection
|
Collected data on Earth's radiation belts
|
|
gptkbp:contribution
|
Provided data on atmospheric density
|
|
gptkbp:country
|
gptkb:United_States
|
|
gptkbp:data_transmission
|
Radio transmission
radio signals
|
|
gptkbp:data_type
|
scientific data
|
|
gptkbp:data_usage
|
Several years
108 MHz
Used for scientific research
|
|
gptkbp:design
|
gptkb:NASA
3 years
|
|
gptkbp:dimensions
|
16.5 cm diameter
|
|
gptkbp:discovery
|
Earth's shape and size
|
|
gptkbp:eccentricity
|
0.73
|
|
gptkbp:final_status_date
|
gptkb:1964
|
|
gptkbp:frequency
|
108.0 MHz
|
|
gptkbp:historical_legacy
|
Influenced future satellite missions
|
|
gptkbp:historical_significance
|
Pioneered satellite technology
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Vanguard 1 satellite
|
|
gptkbp:impact
|
Contributed to satellite technology
Significant impact on space science
|
|
gptkbp:is_aplace_for
|
3,960 km
|
|
gptkbp:launch_date
|
March 17, 1958
|
|
gptkbp:launch_site
|
gptkb:Cape_Canaveral
|
|
gptkbp:launch_vehicle
|
gptkb:Vanguard_rocket
|
|
gptkbp:manufacturer
|
gptkb:NASA
|
|
gptkbp:mass
|
1.47 kg
|
|
gptkbp:mission
|
gptkb:1964
|
|
gptkbp:mission_type
|
gptkb:Earth_observation
|
|
gptkbp:notable_achievement
|
First solar-powered satellite
|
|
gptkbp:orbit_type
|
Decayed orbit
|
|
gptkbp:orbital_altitude
|
Elliptical orbit
650 km to 3960 km
|
|
gptkbp:orbital_decay_rate
|
Gradual decay
|
|
gptkbp:orbital_inclination
|
34.3 degrees
|
|
gptkbp:orbital_period
|
gptkb:Yes
132.9 minutes
|
|
gptkbp:orbital_tracking
|
Tracked by multiple observatories
|
|
gptkbp:orbital_tracking_duration
|
Over 6 years
|
|
gptkbp:perigee
|
650 km
|
|
gptkbp:power_source
|
solar cells
|
|
gptkbp:reign
|
1.5 hours
|
|
gptkbp:scientific_goals
|
Study Earth's environment
|
|
gptkbp:scientific_instruments
|
gptkb:radio_station
gptkb:magnetometer
2
|
|
gptkbp:service
|
First object to use solar power in space
|
|
gptkbp:speed
|
Not reentered
|
|
gptkbp:status
|
Decommissioned
inactive
|
|
gptkbp:successor
|
gptkb:Explorer_1
|
|
gptkbp:sustainability
|
0.5 m²
|
|
gptkbp:track
|
tracked by ground stations
|
|
gptkbp:bfsParent
|
gptkb:Project_VANGUARD
|
|
gptkbp:bfsLayer
|
6
|