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Explorer 1

Explorer 1 was the first satellite launched by the United States and was part of the U.S. participation in the International Geophysical Year (IGY). The 1958 mission followed the first two satellites, both launched by the Soviet Union during the previous year, Sputnik 1 and Sputnik 2. This began a Space Race during the Cold War between the two nations.

Legacy, Art, Measurement & Science

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Apogee altitude
2,550 km (1,580 mi)
Bus
Explorer 1
Contractor
Army Ballistic Missile Agency
COSPAR ID
1958-001A
Decay date
31 March 1970
Dimensions
203 cm (80 in) length 15.2 cm (6.0 in) diameter

Topics to explore

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Overview

Background

Spacecraft

Science payload

Flight

Results

Legacy

Gallery

Advanced semantic analysis

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Map overview Semantic statistics

Explorer 1

Nodes85
Edges84
Triples162
Avg. degree1.98
Density0.023529
Components1

How this topic connects Entity context

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Explorer 1

Top relations

related to background · 29
Explorer 1 → ABMA, Army, Army Ballistic Missile Agency, December, Earth, Eisenhower, Explorer, Following, However, International Geophysical Year, IRBM, Jet Propulsion Laboratory, JPL, Juno, Jupiter, Jupiter-C, Navy, Navy's Project Vanguard, November, October
related to External links · 25
Explorer 1 → Alabama, Archived, Army Explorers, Army Satellites, Astronautics, Big Picture, Collection, Days, Department, Explorer, Huntsville Archives, Internet Archive, Internet ArchiveThe, JPL-Army Ballistic Missile Agency, NASA, National Air, November, Smithsonian InstitutionExplorer, Space, Space Museum
related to Flight · 18
Explorer 1 → After, At, Explorer, February, GMT, Goldstone Tracking Station, Great Hall, It, January, Juno, March, May, Mercury, National Academy, Pacific Ocean, Sciences, The, Washington
related to Gallery · 15
Explorer 1 → Braun, Ernst StuhlingerWilliam Hayward Pickering, Explorer, February, Gen, James Van Allen, Jet Propulsion LaboratoryTrajectory, John Medaris, Juno, LC-26AClose-up, Maj, Redstone Arsenal, Walter Haeussermann, Washington, Wernher
related to Legacy · 15
Explorer 1 → Beacon-1, Delta II, Explorer, Explorer-1 Prime, Explorer-1 Prime Unit, Explorers, Four, Juno, Juno II, March, October, Of, The, The Juno, The Prime
related to Results · 14
Explorer 1 → Earth's, Eulerian, Explorer, Geiger, International Geophysical Year, Iowa, James Van Allen, Later, Sometimes, South America, The, The University, This, Van Allen
related to Spacecraft · 10
Explorer 1 → California Institute, Dr, Explorer, In, It, Soviet, Sputnik, Technology's JPL, The, William Hayward Pickering
related to Science payload · 8
Explorer 1 → Dr, Explorer, Iowa, Iowa Cosmic Ray Instrument, James Van Allen, The, The Explorer, University
Apogee altitude · 1
Explorer 1 → 2,550 km (1,580 mi)
Bus · 1
Explorer 1 → Explorer 1

Important terminology Word statistics

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Important terminology

explorer satellite first orbit launch 1958 launched juno micrometeorite missile spacecraft data mission payload two lc-26a gmt designed cosmic sputnik

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Explorer 1Apogee altitude2,550 km (1,580 mi)1.00infobox
Explorer 1BusExplorer 11.00infobox
Explorer 1ContractorArmy Ballistic Missile Agency1.00infobox
Explorer 1COSPAR ID1958-001A1.00infobox
Explorer 1Decay date31 March 19701.00infobox
Explorer 1Dimensions203 cm (80 in) length 15.2 cm (6.0 in) diameter1.00infobox
Explorer 1Entered service1 February 19581.00infobox
Explorer 1Harvard designation1958 Alpha 11.00infobox
Explorer 1Inclination33.24°1.00infobox
Explorer 1Last contact23 May 19581.00infobox
Explorer 1Launch date1 February 1958, 03:47:56 GMT1.00infobox
Explorer 1Launch mass13.97 kg (30.8 lb)1.00infobox
Explorer 1Launch siteAtlantic Missile Range, LC-26A1.00infobox
Explorer 1ManufacturerJet Propulsion Laboratory1.00infobox
Explorer 1Mission duration120 days (planned) 111 days (achieved)1.00infobox
Explorer 1Mission typeEarth science1.00infobox
Explorer 1NamesExplorer I 1958 Alpha 11.00infobox
Explorer 1OperatorJPL / ABMA1.00infobox
Explorer 1Perigee altitude358 km (222 mi)1.00infobox
Explorer 1Period114.80 minutes1.00infobox
Explorer 1Power60 watts1.00infobox
Explorer 1Reference systemGeocentric orbit1.00infobox
Explorer 1RegimeMedium Earth orbit1.00infobox
Explorer 1Revolution no.584021.00infobox
Explorer 1RocketJuno I (RS-29)1.00infobox
Explorer 1SATCAT no.000041.00infobox
Explorer 1SpacecraftExplorer I1.00infobox
Explorer 1Spacecraft typeScience Explorer1.00infobox

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