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Soviet Space ProgramSoyuz U43/4 (43R), Plesetsk Cosmodrome, Russian Federation
Yantar-4K2 21
Launched
February 26, 1986
Summary
Yantar-4K2 21 launched on a Soviet Space Program Soyuz U from 43/4 (43R), Plesetsk Cosmodrome, Russian Federation on February 26, 1986. It was Soviet Space Program's 1,971st launch, 15th this year and humanity's 3,050th orbital launch attempt. It was the 432nd Soyuz U flight and the 6th this year. The payload was bound for low Earth orbit (LEO). Kosmos-1734, one of 4 catalogued objects, reached a 171 × 349 km orbit inclined 67.1°. 4 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
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 432nd Soyuz U flight · 6th this yearSoviet Space Program's 1,971st launch15th this yearhumanity's 3,050th orbital launch attempt21st orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1734 · NORAD 16618 · 1986-020 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- COSMOS 1734
- Object ID
- 1986-020A
- Epoch
- 1986-02-26 13:26:36 UTC
- Mean motion
- 16.07774971 rev/day
- Eccentricity
- 0.013377
- Inclination
- 67.1304°
- Ascending node
- 347.589°
- Arg. of perigee
- 93.8893°
- Mean anomaly
- 267.7603°
- Element set
- 999
- Rev at epoch
- 0
- 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
4 catalogued: 1 payload, 1 rocket stage, 2 components; none still in orbit
- Kosmos-1734 · NORAD 16618 · landed April 26, 1986
Soyuz-U 11-838 Blok-I · re-entered March 3, 1986
Data from J. McDowell, planet4589.org
About this launch
Film-return reconnaissance satellite
Pad
43/4 (43R), Plesetsk Cosmodrome, Russian Federation
192nd launch from 43/4 (43R), 2nd this year · 1,105th from Plesetsk Cosmodrome, Russian Federation
329 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
49 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Yantar-4K2 21 launch?
Yantar-4K2 21 launched on February 26, 1986. The time is known to the hour, not the minute.
Where can I watch Yantar-4K2 21?
No webcast is on record for this launch.
What rocket launched Yantar-4K2 21?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Yantar-4K2 21 launch from?
43/4 (43R), Plesetsk Cosmodrome, Russian Federation.
What orbit did Yantar-4K2 21 reach?
Kosmos-1734, one of 4 catalogued objects, reached a 171 × 349 km orbit inclined 67.1°.
How many satellites did Yantar-4K2 21 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).