Explorer 39 (Air Density C)
Explorer 39 (Air Density C) was a dedicated upper-atmosphere mission measuring variations in atmospheric density and related geophysical conditions.
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Identity
- Aliases
- Explorer XXXIXExplorer 39Air Density Explorer CAir Density C1968-065A
- Name
- Explorer 39 (Air Density C)
- Status
- completed
Details
- Astronauts
- -
- Description
- Explorer 39 (Air Density C) was a dedicated upper-atmosphere mission measuring variations in atmospheric density and related geophysical conditions.
- Destination
- Nearly polar, highly elliptical low Earth orbit at approximately 678 km perigee and 2,506 km apogee (80.7° inclination; 118-minute period)
- Programs
- Start Date
- 1968-08-08
- Vehicle Families
Links
Assets & Meta
- Creation Time
- August 14, 2026 at 20:47:46 UTC
- Updated Time
- August 21, 2026 at 11:48:48 UTC
Other
- Affiliations
- Space Stations
- -
- Vehicles