Soviet Space ProgramSoyuz U41/1, Plesetsk Cosmodrome, Russian Federation
Efir 1
Launched
March 10, 1984
Summary
Efir 1 launched on a Soviet Space Program Soyuz U from 41/1, Plesetsk Cosmodrome, Russian Federation on March 10, 1984. It was Soviet Space Program's 1,777th launch, 18th this year and humanity's 2,801st orbital launch attempt. It was the 358th Soyuz U flight and the 7th this year. The payload was bound for low Earth orbit (LEO). Kosmos-1543, one of 2 catalogued objects, reached a 222 × 410 km orbit inclined 62.8°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Soyuz U · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Astrophysics · Low Earth Orbit (LEO)
- Milestone
- 358th Soyuz U flight · 7th this yearSoviet Space Program's 1,777th launch18th this yearhumanity's 2,801st orbital launch attempt26th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1543 · NORAD 14797 · 1984-026 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1984-026A
- Epoch
- 1984-03-10 19:43:30 UTC
- Mean motion
- 15.87633509 rev/day
- Eccentricity
- 0.0140027
- Inclination
- 62.7994°
- Ascending node
- 13.3015°
- Arg. of perigee
- 107.6255°
- Mean anomaly
- 253.4166°
- Element set
- 999
- Rev at epoch
- 2
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage; none still in orbit
- Kosmos-1543 · NORAD 14797 · landed April 5, 1984
Soyuz-U No. 309 Blok-I · re-entered March 27, 1984
Data from J. McDowell, planet4589.org
About this launch
Scientific satellite dedicated to cosmic rays research
Pad

41/1, Plesetsk Cosmodrome, Russian Federation
251st launch from 41/1, 3rd this year · 981st from Plesetsk Cosmodrome, Russian Federation
310 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
23 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Efir 1 launch?
Efir 1 launched on March 10, 1984. The time is known to the hour, not the minute.
Where can I watch Efir 1?
No webcast is on record for this launch.
What rocket launched Efir 1?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Efir 1 launch from?
41/1, Plesetsk Cosmodrome, Russian Federation.
What orbit did Efir 1 reach?
Kosmos-1543, one of 2 catalogued objects, reached a 222 × 410 km orbit inclined 62.8°.
How many satellites did Efir 1 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] Soyuz U - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fsoyuz2520u_image_20190222031023.jpeg&w=1600)