Back to Missions

Explorer 54 (AE-D)

Explorer 54 (Atmosphere Explorer-D) was a dedicated upper-atmosphere mission measuring composition, temperature, and ionospheric processes across Earth’s near-space environment.

Follow this mission

Alerts are unavailable because this mission is no longer active.

Identity

Aliases
Explorer LIVExplorer 54Atmosphere Explorer DAE-D
Name
Explorer 54 (AE-D)
Status
completed

Details

Astronauts
-
Description
Explorer 54 (Atmosphere Explorer-D) was a dedicated upper-atmosphere mission measuring composition, temperature, and ionospheric processes across Earth’s near-space environment.
Destination
Highly eccentric polar Earth orbit at approximately 154 km perigee and 3,804 km apogee (90.1° inclination; 126.9-minute period; initial orbit)
End Date
1976-01-29
Programs
Start Date
1975-10-06
Vehicle Families

Links

Assets & Meta

Creation Time
August 14, 2026 at 21:29:26 UTC
Updated Time
August 21, 2026 at 12:30:38 UTC

Other

Affiliations
Space Stations
-
Vehicles