About National Intelligence Organizations Products Missions Spacecraft Constellations Forecasts Latest Information

© Polaris Intelligence 2026Admin

Explorer 40

retired

Orbit: LEOLaunched 8/8/1968

Technical Specifications

Verified technical details

Dry Mass: 70 kg
Total Mass: 70 kg
Power: Unknown
Design Life: Unknown

Stakeholders

Operator

NASA Langley Research Center

Manufacturer

University of Iowa

Launch Mission

Explorer 39/40

8/8/1968