Payload
VANGUARD 3
activePayloadMEO
Vanguard 3 is a scientific satellite that was launched into Earth orbit by the Vanguard SLV-7 on 18 September 1959, the third successful Vanguard launch out of eleven attempts. Vanguard rocket: Vanguard Satellite Launch Vehicle-7 (SLV-7) was an unused Vanguard TV-4BU rocket, updated to the final production Satellite Launch Vehicle (SLV).
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Launch
- Launch date
- September 18, 1959 at 05:20 AM UTC
- Launch site
- Cape Canaveral SFS, USA
- Launched by
- Vanguard →
- Operator
- US Navy
- Mission
- Vanguard III
- Launch record
- View full launch →
Orbit
- Orbit regime
- MEO
- Apoapsis
- 3,204 km
- Periapsis
- 507 km
- Inclination
- 33.34°
- Orbital period
- 123.93 min
Identity
- COSPAR (Int'l)
- 1959-007A
- NORAD catalog №
- 20
- Object type
- Payload
- Owner / operator
United States- Radar cross-section
- 0.6412 m²
- Status
- active