UNITED STATES AIR FORCE

Thor Agena A | Discoverer 2

SUCCESS Thor Agena A →
Apr 13, 1959 at 21:18 UTC
Polar Orbit Government/Top Secret Vandenberg SFB, CA, USA 60% success
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Live Orbit
Fullscreen
Mission Control3D trajectory · Live telemetry · AI narrator · Booster tracking
PADSpace Launch Complex 1W
SITEVandenberg SFB, CA, USA →
ORBITPolar Orbit
TYPEGovernment/Top Secret

Discoverer II successfully reached orbit and took photos of Earth. However, when the capsule with the data was ejected in order to re-enter the atmosphere there was a timer malfunction meaning it seperated too early and landed over the North Pole rather than the intended target of Hawaii. The capsule was never recovered.

MISSION
Discoverer 2
MISSION TYPE
Government/Top Secret
TARGET ORBIT
Polar Orbit
COUNTRY
USA
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: e10a11fb-e3b9-4def-b281-c5602653b2dc
Reported date: Apr 13, 1959 at 21:18 UTC
Last synced: 6 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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MANUFACTURER
McDonnell Douglas
VARIANT
Agena A
FLIGHTS
15
SUCCESSES
9
SUCCESS RATE
60%

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.

When is the Thor Agena A | Discoverer 2 launch?
The Thor Agena A | Discoverer 2 is scheduled for Monday, April 13, 1959 at 9:18 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Discoverer 2?
The Thor Agena A | Discoverer 2 mission uses the Thor Agena A rocket, manufactured by McDonnell Douglas. The Thor Agena A has flown 15 times with a 60% success rate.
Where is the Thor Agena A | Discoverer 2 launching from?
The launch takes place from Space Launch Complex 1W at Vandenberg SFB, CA, USA.
What orbit is Discoverer 2 going to?
The Discoverer 2 mission is targeting Polar Orbit.
Who is launching Discoverer 2?
The Thor Agena A | Discoverer 2 is operated by United States Air Force.
Can I watch the Thor Agena A | Discoverer 2 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Mar 28, 2026 20:12 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 20:12 UTC
Launch date set: Apr 13, 1959 at 21:18 UTC
NET (No Earlier Than) confirmed by United States Air Force
Mar 28, 2026 20:12 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 6 minutes ago
Launch Library 26 minutes ago
Launch ID: e10a11fb-e3b9-4def-b281-c5602653b2dc
Open-Meteo Weather3 days ago
Pad weather at 34.76, -120.63

Mission Profile

Discoverer 2 was a Thor Agena A mission operated by United States Air Force that lifted off from Space Launch Complex 1W, Vandenberg SFB, CA, USA on April 13, 1959. The flight carried its payload on a government/top secret mission to Polar Orbit. The launch was a success.