Echo 2 (NASA A-12), a 41 m passive balloon communications satellite that reflected microwave signals between ground stations and supported geodesy experiments. Thor SLV-2 Agena-B from Vandenberg lofted it on 25 January 1964 into near-polar LEO; it decayed on 7 June 1969.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 548 kg
- Flight
- 1st
- of 3 Thor SLV-2 Agena B flights
- Date and time
- 25 January 1964, 13:59 UTC
- Rocket
- Thor SLV-2 Agena B
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 2E, Vandenberg SFB, CA, USA
- Payload
- Communications
- International designator
- 1964-004
- Launches in 1964
- 4th of 100
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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