Echo 2
Thor SLV-2 Agena B
United States Air Force
Launch Status
SuccessMission
Echo 2
Type: Communications
The Echo 2 spacecraft was a 41-m balloon of aluminum foil-mylar laminate. Echo 2 was designed as a rigidized passive communications spacecraft for testing propagation, tracking, and communication techniques.
Trajectory
The trajectory is unavailable. Check back for updates.
Location
Space Launch Complex 2E
Vandenberg SFB, CA, USA
713 rockets have launched from Vandenberg SFB, CA, USA.

Rocket
Thor SLV-2 Agena B – McDonnell Douglas
- Family: Thor
- Length: 27.2 m
- Diameter: 2.44 m
- Launch Mass: 56 T
- Low Earth Orbit Capacity: 400 kg
The Thor SLV-2 Agena B was manufactured by McDonnell Douglas with the first launch on 1964-01-25. Thor SLV-2 Agena B has 3 successful launches and 0 failed launches with a total of 3 launches. Thor-Agena was a series of orbital launch vehicles. The rockets used Thor first stages and Agena second stages. They are thus cousins of the more-famous Thor-Deltas, which founded the Delta rocket family.
Agency
United States Air Force – USAF
- Type: Government
- Abbreviation: USAF
- Country: USA