MISSION OVERVIEW
The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
LAUNCH DETAILS
VEHICLE
Scout A-1AGENCY
United States Air ForceMISSION
Transit-O 20
MISSION TYPE
Navigation
TARGET ORBIT
Polar Orbit
LAUNCH PAD
Space Launch Complex 5LAUNCH SITE
Vandenberg SFB, CA, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: a0f0b69c-f278-44ee-a4ff-b2c956c1dfb8
Reported date: Oct 30, 1973 at 00:37 UTC
Last synced: 13 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Scout A-1 →
MANUFACTURER
Vought
VARIANT
A-1
FLIGHTS
1
SUCCESSES
1
SUCCESS RATE
100%
The Scout family of rockets were were American launch vehicles designed to place small satellites into orbit around the Earth. The Scout multistage rocket was the first orbital launch vehicle to be entirely composed of solid fuel stages.
FREQUENTLY ASKED QUESTIONS
When is the Scout A-1 | Transit-O 20 launch?
The Scout A-1 | Transit-O 20 is scheduled for Tuesday, October 30, 1973 at 12:37 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Transit-O 20?
The Scout A-1 | Transit-O 20 mission uses the Scout A-1 rocket, manufactured by Vought. The Scout A-1 has flown 1 times with a 100% success rate.
Where is the Scout A-1 | Transit-O 20 launching from?
The launch takes place from Space Launch Complex 5 at Vandenberg SFB, CA, USA.
What orbit is Transit-O 20 going to?
The Transit-O 20 mission is targeting Polar Orbit.
Who is launching Transit-O 20?
The Scout A-1 | Transit-O 20 is operated by United States Air Force.
Can I watch the Scout A-1 | Transit-O 20 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 21:45 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 21:45 UTC
Launch date set: Oct 30, 1973 at 00:37 UTC
NET (No Earlier Than) confirmed by United States Air Force
Mar 28, 2026 21:45 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 13 hours ago
●Launch Library 213 hours ago
Launch ID: a0f0b69c-f278-44ee-a4ff-b2c956c1dfb8
●Open-Meteo Weather15 hours ago
Pad weather at 34.61, -120.62
Mission Profile
Transit-O 20 was a Scout A-1 mission operated by United States Air Force that lifted off from Space Launch Complex 5, Vandenberg SFB, CA, USA on October 30, 1973. The flight carried its payload on a navigation mission to Polar Orbit. The launch was a success.