SOVIET SPACE PROGRAM
Soyuz U | Efir 1
—
—
Mar 10, 1984 at 17:00 UTC
▸ Flight profile›
Initializing Launch Globe…
MISSION OVERVIEW
Scientific satellite dedicated to cosmic rays research
LAUNCH DETAILS
VEHICLE
Soyuz UAGENCY
Soviet Space ProgramMISSION
Efir 1
MISSION TYPE
Astrophysics
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: b29ef118-618b-4b16-9080-667b12dbc3bb
Reported date: Mar 10, 1984 at 17:00 UTC
Last synced: 1 minute ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
Loading weather…
CAN YOU SEE THIS LAUNCH?
Select a location to check if this launch is visible from where you are
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 | Efir 1 launch?
The Soyuz U | Efir 1 is scheduled for Saturday, March 10, 1984 at 5:00 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 Efir 1?
The Soyuz U | Efir 1 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 | Efir 1 launching from?
The launch takes place from 41/1 at Plesetsk Cosmodrome, Russian Federation.
What orbit is Efir 1 going to?
The Efir 1 mission is targeting Low Earth Orbit.
Who is launching Efir 1?
The Soyuz U | Efir 1 is operated by Soviet Space Program.
Can I watch the Soyuz U | Efir 1 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: Mar 10, 1984 at 17:00 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: 1 minute ago
●Launch Library 21 minute ago
Launch ID: b29ef118-618b-4b16-9080-667b12dbc3bb
●Open-Meteo Weather1 week ago
Pad weather at 62.94, 40.53
BROWSE BY
Mission Profile
Efir 1 was a Soyuz U mission operated by Soviet Space Program that lifted off from 41/1, Plesetsk Cosmodrome, Russian Federation on March 10, 1984. The flight carried its payload on a astrophysics mission to Low Earth Orbit. The launch was a success.