Explorer 1
E90686
Explorer 1 was the first successful United States satellite, launched in 1958 and notable for discovering the Van Allen radiation belts.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Explorer 1 canonical | 10 |
| Explorer 1 mission | 3 |
| Explorer 1 bus | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
artificial satellite
ⓘ
scientific research satellite ⓘ |
| agency |
NACA
ⓘ
surface form:
National Advisory Committee for Aeronautics
Army Ballistic Missile Agency ⓘ
surface form:
United States Army Ballistic Missile Agency
|
| apogeeAltitude | about 2,550 kilometers ⓘ |
| associatedWith |
Cold War
ⓘ
Space Race ⓘ |
| carriedInstrument |
Geiger–Müller tube
ⓘ
cosmic ray detector ⓘ micrometeorite detector ⓘ temperature sensors ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| diameter | about 0.152 meters ⓘ |
| discovererOf |
Earth’s outer radiation belt
ⓘ
surface form:
Van Allen radiation belts
|
| firstOf | first successful United States satellite ⓘ |
| followedBy |
Explorer 3 mission
ⓘ
surface form:
Explorer 3
|
| launchContractor | Army Ballistic Missile Agency ⓘ |
| launchDate | 1958-02-01 ⓘ |
| launchOutcome | success ⓘ |
| launchSite |
Cape Canaveral Missile Annex Launch Complex 26A
ⓘ
Cape Canaveral ⓘ
surface form:
Cape Canaveral, Florida
|
| launchVehicle |
Jupiter-C rocket
ⓘ
surface form:
Juno I
|
| length | about 2.03 meters ⓘ |
| manufacturer | Jet Propulsion Laboratory ⓘ |
| mass | about 13.97 kilograms ⓘ |
| missionType |
Earth science
ⓘ
cosmic ray research ⓘ ionospheric research ⓘ |
| namedAfter | exploration ⓘ |
| notableFor | discovering the Van Allen radiation belts ⓘ |
| operator |
Jet Propulsion Laboratory
ⓘ
United States Army ⓘ |
| orbitalInclination | about 33.2 degrees ⓘ |
| orbitalPeriod | about 114.8 minutes ⓘ |
| orbitReference | geocentric orbit ⓘ |
| orbitRegime | low Earth orbit ⓘ |
| perigeeAltitude | about 358 kilometers ⓘ |
| powerSource | battery ⓘ |
| precededBy | Vanguard TV3 ⓘ |
| principalInvestigator |
James A. Van Allen
ⓘ
surface form:
James Van Allen
|
| program |
NASA Explorer Program
ⓘ
surface form:
Explorer program
|
| radioFrequency |
about 108.00 MHz
ⓘ
about 108.03 MHz ⓘ |
| reentryDate | 1970-03-31 ⓘ |
| spacecraftBus |
Explorer 1
self-linksurface differs
ⓘ
surface form:
Explorer 1 bus
|
| spinStabilized | true ⓘ |
| status | deorbited ⓘ |
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Vanguard 1
this entity surface form:
Explorer 1 mission
this entity surface form:
Explorer 1 bus
subject surface form:
Jupiter-C
this entity surface form:
Explorer 1 mission
subject surface form:
Jupiter-C
subject surface form:
Van Allen radiation belt
subject surface form:
Explorer 3
this entity surface form:
Explorer 1 mission