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Failure

Discoverer 4

Thor Agena AUnited States Air ForceSpace Launch Complex 1E
Thursday, June 25, 1959 · 10:47 PM UTC

This mission is complete.

Mission Brief

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.

PayloadDiscoverer 4
OrbitPolar Orbit
CustomerUnited States Air Force
StagesUnknown
PadSpace Launch Complex 1E, Vandenberg SFB, CA, USA

Mission Timeline

14 / 14100%

Ground vector

Launch site

Site locked

Space Launch Complex 1E

Vandenberg SFB, CA, USA

Global range
SITE LOCK
Latitude
34.756°N
Longitude
120.626°W

Range Weather

Launch commit criteria

Clear
Watch
TrackingNo active constraints
Weather Rules

Tracking no weather issues at this time.

Primary concern
No weather issues
Rule count
0
Temperature
Not reported
Surface wind
Not reported
Window

10:47 PM UTC - 10:47 PM UTC

Vehicle

Thor Agena A

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HeightN/A
LEO PayloadN/A
Launches1,078
Successes972

Provider

United States Air Force

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Schedule History

No meaningful launch-time or status changes recorded.