MISSION OVERVIEW
Film-return reconnaissance satellite
LAUNCH DETAILS
VEHICLE
Soyuz UAGENCY
Soviet Space ProgramMISSION
Zenit-4MKT 23
MISSION TYPE
Government/Top Secret
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
41/1LAUNCH SITE
Plesetsk Cosmodrome, Russian FederationCOUNTRY
RUS
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 18e88e34-4d42-4ef1-a8f2-ccc2135a36f5
Reported date: Apr 28, 1983 at 08:30 UTC
Last synced: 13 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 — Soyuz U →
MANUFACTURER
Russian Federal Space Agency (ROSCOSMOS)
FLIGHTS
714
SUCCESSES
694
SUCCESS RATE
97.2%
FREQUENTLY ASKED QUESTIONS
When is the Soyuz U | Zenit-4MKT 23 launch?
The Soyuz U | Zenit-4MKT 23 is scheduled for Thursday, April 28, 1983 at 8:30 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 Zenit-4MKT 23?
The Soyuz U | Zenit-4MKT 23 mission uses the Soyuz U rocket, manufactured by Russian Federal Space Agency (ROSCOSMOS). The Soyuz U has flown 714 times with a 97.2% success rate.
Where is the Soyuz U | Zenit-4MKT 23 launching from?
The launch takes place from 41/1 at Plesetsk Cosmodrome, Russian Federation.
What orbit is Zenit-4MKT 23 going to?
The Zenit-4MKT 23 mission is targeting Low Earth Orbit.
Who is launching Zenit-4MKT 23?
The Soyuz U | Zenit-4MKT 23 is operated by Soviet Space Program.
Can I watch the Soyuz U | Zenit-4MKT 23 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 29, 2026 23:44 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 23:44 UTC
Launch date set: Apr 28, 1983 at 08:30 UTC
NET (No Earlier Than) confirmed by Soviet Space Program
Mar 29, 2026 23:44 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 13 minutes ago
●Launch Library 213 minutes ago
Launch ID: 18e88e34-4d42-4ef1-a8f2-ccc2135a36f5
●Open-Meteo Weather1 day ago
Pad weather at 62.94, 40.53
BROWSE BY
Mission Profile
Zenit-4MKT 23 was a Soyuz U mission operated by Soviet Space Program that lifted off from 41/1, Plesetsk Cosmodrome, Russian Federation on April 28, 1983. The flight carried its payload on a government/top secret mission to Low Earth Orbit. The launch was a success.