Thor SLV-2 Agena B
USA Wikipedia 
Built & Operated By
McDonnell Douglas
Commercial
Family
Thor
variant SLV-2 Agena B
Maiden Flight
25 JAN 1964
About
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.
Vehicle Specifications
Height
27.2 m
Diameter
2.44 m
Launch Mass
56 T
Thrust
756 kN
Stages
2
Configuration
Expendable
Launch Record
Total Launches
3
Successful
3
Failed
0
Consecutive
3
Performance
To LEO
400 kg
Launch Cost
$19.6M