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📊 Analysis

Statistics & insights on rockets and organizations — technology, history, numbers.

Thor SLV-2A Agena D

Retired

McDonnell Douglas

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.

Key figures

Total launches
61
Successes
57
Failures
4
Success rate
93.4 %
Success streak
11
Maiden flight
Feb 28, 1963
Reusable
No
Shortest launch interval ⓘ
1d 4h
Planned launches
0
Thor, Thor-Agena family total
142 launches · 120 successes · 22 failures (7 variants)

🧐 Data check

Automatic plausibility checks — anomalies are surfaced transparently here:

  • ℹ️The figures above apply only to the “Thor SLV-2A Agena D” variant. The Launch Library counts each variant separately — the Thor, Thor-Agena family totals 142 launches across 7 variants.

Technology

Length
31 m
Diameter
2.44 m
Launch mass
67 t
Liftoff thrust
1,571 kN
Stages
3

Launches per year

of which in our database: 61

1963: 8 Successes1963: 2 Failures1019631964: 19 Successes1964: 1 Failures2019641965: 15 Successes1519651966: 9 Successes1966: 1 Failures1019661967: 5 Successes519671968: 1 Successes11968
Successes Failures Other/planned

History & events

  1. Feb 28, 1963🚀 Maiden flightKH-4 19View launch →
  2. Feb 28, 1963💥 FailureKH-4 19View launch →
  3. Mar 18, 1963💥 FailureKH-6 1View launch →
  4. Mar 24, 1964💥 FailureKH-4A 4View launch →
  5. May 3, 1966💥 FailureKH-4A 32View launch →

Sources