Payload
ERS 21 (OV5-4)
NonoperationalPayloadGEONORAD 3430
ERS 21 (OV5-4) is a United States payload satellite, launched on September 26, 1968 into GEO.
Launch
- Launch date
- September 26, 1968 at 07:37 AM UTC
- Launch site
- Cape Canaveral SFS, USA
- Launched by
- Titan IIIC →
- Operator
- United States Air Force
- Mission
- OV2-5
- Launch record
- View full launch →
Orbit
- Orbit regime
- GEO
- Apoapsis
- 35,785 km
- Periapsis
- 35,775 km
- Inclination
- 3°
- Orbital period
- 1435.75 min
Spacecraft
- Operator
- United States
- Launch mass
- 12.88 kg
- Dimensions
- Ø0.3 × 0.3 m
Identity
- COSPAR (Int'l)
- 1968-081C
- NORAD catalog №
- 3430
- Object type
- Payload
- Owner / operator
United States- Radar cross-section
- 0.003 m²
- Status
- Nonoperational
End of mission
- Fate
- No longer operational — remains in orbit as inactive.
- Final status
- Nonoperational