Vanguard 3 (SLV-7/TV-4BU), a Naval Research Laboratory Earth-science satellite, launched on a Vanguard rocket from Cape Canaveral LC-18A on 18 September 1959. The final Vanguard flight carried a magnetometer, X-ray sensors, and micrometeorite detectors into medium Earth orbit.
- Outcome
- Success
- Orbit
- MEO
- Medium Earth orbit
- Payload to orbit
- 23 kg
- Flight
- 11th
- of 11 Vanguard flights
- Date and time
- 18 September 1959, 05:20 UTC
- Rocket
- Vanguard
- Builder
- LM
- Launch site
- Launch Complex 18A, Cape Canaveral SFS, FL, USA
- Payload
- Earth Science
- International designator
- 1959-007
- Launches in 1959
- 18th of 23
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
Object pages on Space Atlas: Vanguard 3
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