Soviet Space ProgramSoyuz U16/2, Plesetsk Cosmodrome, Russian Federation
Yantar-4K2 31
Launched
May 26, 1987
Summary
Yantar-4K2 31 launched on a Soviet Space Program Soyuz U from 16/2, Plesetsk Cosmodrome, Russian Federation on May 26, 1987. It was Soviet Space Program's 2,091st launch, 41st this year and humanity's 3,188th orbital launch attempt. It was the 473rd Soyuz U flight and the 14th this year. The payload was bound for low Earth orbit (LEO). Kosmos-1847, one of 2 catalogued objects, reached a 163 × 354 km orbit inclined 67.2°. 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
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 473rd Soyuz U flight · 14th this yearSoviet Space Program's 2,091st launch41st this yearhumanity's 3,188th orbital launch attempt49th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1847 · NORAD 18011 · 1987-046 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- COSMOS 1847
- Object ID
- 1987-046A
- Epoch
- 1987-05-26 13:26:41 UTC
- Mean motion
- 16.08418226 rev/day
- Eccentricity
- 0.01438
- Inclination
- 67.1513°
- Ascending node
- 75.3084°
- Arg. of perigee
- 90.4516°
- Mean anomaly
- 271.3155°
- 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
2 catalogued: 1 payload, 1 rocket stage; none still in orbit
- Kosmos-1847 · NORAD 18011 · landed July 22, 1987
Soyuz-U 48-929 Blok-I · re-entered May 30, 1987
Data from J. McDowell, planet4589.org
About this launch
Film-return reconnaissance satellite
Pad

16/2, Plesetsk Cosmodrome, Russian Federation
60th launch from 16/2, 3rd this year · 1,170th from Plesetsk Cosmodrome, Russian Federation
136 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
76 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Yantar-4K2 31 launch?
Yantar-4K2 31 launched on May 26, 1987. The time is known to the hour, not the minute.
Where can I watch Yantar-4K2 31?
No webcast is on record for this launch.
What rocket launched Yantar-4K2 31?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Yantar-4K2 31 launch from?
16/2, Plesetsk Cosmodrome, Russian Federation.
What orbit did Yantar-4K2 31 reach?
Kosmos-1847, one of 2 catalogued objects, reached a 163 × 354 km orbit inclined 67.2°.
How many satellites did Yantar-4K2 31 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)