Thor Agena A | Discoverer 4
Launch Failure
L - -- : -- : -- : --
Instantaneous launch window.
Launch Window
June 25, 1959, 10:47 p.m. - June 25, 1959, 10:47 p.m.
Instantaneous launch window.
June 25, 1959, 10:47 p.m. - June 25, 1959, 10:47 p.m.
Discoverer 4 was the fourth in a series of reconnaissance satellites, however, it failed to reach orbit when the Agena engine underperformed and failed to place the capsule into orbit.
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.
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