Thor DM-21 Ablestar

United States Air Force

Manufacturer

United States Air Force

Family

Thor

Maiden flight

1960-04-13

Length

29 m

Diameter

1.44 m

Payload to LEO

150 kg

Launches

Successful

The Thor-Ablestar, or Thor Able-Star, also known as Thor-Epsilon was an early American expendable launch system consisting of a PGM-17 Thor missile, with an Ablestar upper stage. It was a member of the Thor family of rockets, and was derived from the Thor-Able.