Thor Agena A
USA Wikipedia 
Built & Operated By
McDonnell Douglas
Commercial
Family
Thor
variant Agena A
Maiden Flight
21 JAN 1959
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
28 m
Diameter
2.44 m
Launch Mass
53 T
Thrust
667 kN
Stages
2
Configuration
Expendable
Launch Record
Total Launches
15
Successful
9
Failed
6
Consecutive
3
Performance
To LEO
250 kg
Launch Cost
$10.7M