Payload
EXPLORER 28 (IMP-3)
DecayedPayloadHEO
EXPLORER 28 (IMP-3) is a United States payload satellite, launched on May 29, 1965 into HEO. It has since re-entered the atmosphere.
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Launch
- Launch date
- May 29, 1965 at 12:00 PM UTC
- Launch site
- Cape Canaveral SFS, USA
- Launched by
- Thor Delta C →
- Operator
- United States Air Force
- Mission
- Explorer 28
- Launch record
- View full launch →
Orbit
- Orbit regime
- HEO
- Apoapsis
- 227,451 km
- Periapsis
- 32,289 km
- Inclination
- 53.61°
- Orbital period
- 8341.72 min
Spacecraft
- Operator
- United States
- Launch mass
- 59 kg
Identity
- COSPAR (Int'l)
- 1965-042A
- NORAD catalog №
- 1388
- Object type
- Payload
- Owner / operator
United States- Status
- Decayed
- Decay / reentry
- July 4, 1968
End of mission
- Last active / ended
- July 4, 1968
- Time in service
- 3.1 years
- Fate
- Reentered Earth's atmosphere and was destroyed.
- Final status
- Decayed