Soviet Space ProgramSoyuz U31/6, Baikonur Cosmodrome, Republic of Kazakhstan
Zenit-8 55
Launched
December 7, 1987
Summary
Zenit-8 55 launched on a Soviet Space Program Soyuz U from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on December 7, 1987. It was Soviet Space Program's 2,136th launch, 86th this year and humanity's 3,242nd orbital launch attempt. It was the 489th Soyuz U flight and the 30th this year. The payload was bound for low Earth orbit (LEO). Kosmos-1899, one of 7 catalogued objects, reached a 216 × 277 km orbit inclined 70.4°. 7 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
- 489th Soyuz U flight · 30th this yearSoviet Space Program's 2,136th launch86th this yearhumanity's 3,242nd orbital launch attempt103rd orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1899 · NORAD 18625 · 1987-099 · Space-Track · tracking 1 of 7 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1987-099A
- Epoch
- 1987-12-07 08:42:42 UTC
- Mean motion
- 16.12811429 rev/day
- Eccentricity
- 0.0046275
- Inclination
- 70.3837°
- Ascending node
- 251.3°
- Arg. of perigee
- 76.5889°
- Mean anomaly
- 284.0483°
- 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
7 catalogued: 1 payload, 1 rocket stage, 5 components; none still in orbit
- Kosmos-1899 · NORAD 18625 · landed December 21, 1987
Soyuz-U 35-370 Blok-I · re-entered December 13, 1987
Data from J. McDowell, planet4589.org
About this launch
Film-return reconnaissance satellite
Pad

31/6, Baikonur Cosmodrome, Republic of Kazakhstan
299th launch from 31/6, 4th this year · 842nd from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
208 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Zenit-8 55 launch?
Zenit-8 55 launched on December 7, 1987. The time is known to the hour, not the minute.
Where can I watch Zenit-8 55?
No webcast is on record for this launch.
What rocket launched Zenit-8 55?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Zenit-8 55 launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Zenit-8 55 reach?
Kosmos-1899, one of 7 catalogued objects, reached a 216 × 277 km orbit inclined 70.4°.
How many satellites did Zenit-8 55 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)