Thor family

Thor SLV-2 Agena B

RetiredUnited States McDonnell DouglasSpec: SLV-2 Agena B

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.

Flights flown3

Success rate100%3/3

Payload to LEO400kg

Cost per kg to LEO$48,900$19.6M per launch

Maiden flight1964-01-25

Peak year19642 flights

Thor SLV-2 Agena B is built by McDonnell Douglas of the United States. It first flew on 25 January 1964 and last flew on 29 November 1965.

Flight record

3 records

100% success rate3 of 3 flown

1964peak 1964 · 2 flights1965

First flight1964-01-25

Latest flight1965-11-29

Failures0

Consecutive successes3

Fastest turnaround215d 17h

Payload

Per mission profile

Low Earth orbit	400kg
Launch cost	$19.6M
Cost per kg to LEO	$48,900

Vehicle

SLV-2 Agena B spec

Stages	2
Length	27.2m
Diameter	2.44m
Launch mass	56t
Liftoff thrust	756kN
Maiden flight	1964-01-25
Reusable	No

Pads used

1 pad

Space Launch Complex 2E3

Orbits delivered

2 orbits

Low Earth Orbit2Polar Orbit1

Launch history

3 launches

Date	Mission	Pad	Orbit	Outcome
1965-11-29	Thor SLV-2 Agena B \| Alouette 2	Space Launch Complex 2E	Low Earth Orbit	Success
1964-08-28	Thor SLV-2 Agena B \| Nimbus 1	Space Launch Complex 2E	Polar Orbit	Success
1964-01-25	Thor SLV-2 Agena B \| Echo 2	Space Launch Complex 2E	Low Earth Orbit	Success

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.