Payload
EXPLORER 39 (ADI-3)
DecayedPayloadLEO
EXPLORER 39 (ADI-3) is a United States payload satellite, launched on August 8, 1968 into LEO. It has since re-entered the atmosphere.
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Launch
- Launch date
- August 8, 1968 at 08:12 PM UTC
- Launch site
- Vandenberg SFB, USA
- Launched by
- Scout B →
- Operator
- National Aeronautics and Space Administration
- Mission
- Explorer 39
- Launch record
- View full launch →
Orbit
- Orbit regime
- LEO
- Apoapsis
- 278 km
- Periapsis
- 219 km
- Inclination
- 80.54°
- Orbital period
- 89.48 min
Spacecraft
- Operator
- United States
- Launch mass
- 9.4 kg
Identity
- COSPAR (Int'l)
- 1968-066A
- NORAD catalog №
- 3337
- Object type
- Payload
- Owner / operator
United States- Radar cross-section
- 10.371 m²
- Status
- Decayed
- Decay / reentry
- June 22, 1981
End of mission
- Last active / ended
- June 22, 1981
- Time in service
- 12.9 years
- Fate
- Reentered Earth's atmosphere and was destroyed.
- Final status
- Decayed