US ARMY
Atlas B | SCORE
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Dec 18, 1958 at 23:02 UTC
▸ Flight profile›
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MISSION OVERVIEW
SCORE or Signal Communications by Orbiting RElay was the world first purpose built communications satellite. It provided a second test of a communications relay system after the first being provided by Pioneer 1.
LAUNCH DETAILS
VEHICLE
Atlas BAGENCY
US ArmyMISSION
SCORE
MISSION TYPE
Communications
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Launch Complex 11LAUNCH SITE
Cape Canaveral SFS, FL, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 80c8e883-8456-45e7-9ed7-abb1a587c5d9
Reported date: Dec 18, 1958 at 23:02 UTC
Last synced: 18 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Atlas B →
MANUFACTURER
Convair
VARIANT
B
FLIGHTS
1
SUCCESSES
1
SUCCESS RATE
100%
The Convair SM-65B Atlas, or Atlas B, also designated X-12 was a prototype of the Atlas missile. First flown on 19 July 1958, the Atlas B was the first version of the Atlas rocket to use the stage and a half design with an operational sustainer engine and jettisonable rocket booster section. Unlike later Atlas models, the Atlas B used explosive bolts to jettison the booster section.
FREQUENTLY ASKED QUESTIONS
When is the Atlas B | SCORE launch?
The Atlas B | SCORE is scheduled for Thursday, December 18, 1958 at 11:02 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 SCORE?
The Atlas B | SCORE mission uses the Atlas B rocket, manufactured by Convair. The Atlas B has flown 1 times with a 100% success rate.
Where is the Atlas B | SCORE launching from?
The launch takes place from Launch Complex 11 at Cape Canaveral SFS, FL, USA.
What orbit is SCORE going to?
The SCORE mission is targeting Low Earth Orbit.
Who is launching SCORE?
The Atlas B | SCORE is operated by US Army.
Can I watch the Atlas B | SCORE 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.
LAUNCH TIMELINE
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: Dec 18, 1958 at 23:02 UTC
NET (No Earlier Than) confirmed by US Army
Mar 28, 2026 20:12 UTC
Launch completed successfully
Updated via Launch Library 2
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LIVE DATA SOURCES
Last data sync: 18 minutes ago
●Launch Library 218 minutes ago
Launch ID: 80c8e883-8456-45e7-9ed7-abb1a587c5d9
●Spaceflight News API3 minutes ago
9 articles matched
●Open-Meteo Weather2 days ago
Pad weather at 28.48, -80.54
Mission Profile
SCORE was a Atlas B mission operated by US Army that lifted off from Launch Complex 11, Cape Canaveral SFS, FL, USA on December 18, 1958. The flight carried its payload on a communications mission to Low Earth Orbit. The launch was a success.