![[AUTO] Soyuz U - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fsoyuz2520u_image_20190222031023.jpeg&w=1600)
Soviet Space ProgramSoyuz U1/5, Baikonur Cosmodrome, Republic of Kazakhstan
Yantar-4KS1 3
Launched
March 25, 1985
Summary
Yantar-4KS1 3 launched on a Soviet Space Program Soyuz U from 1/5, Baikonur Cosmodrome, Republic of Kazakhstan on March 25, 1985. It was Soviet Space Program's 1,876th launch, 20th this year and humanity's 2,930th orbital launch attempt. It was the 395th Soyuz U flight and the 6th this year. The payload was bound for low Earth orbit (LEO). Kosmos-1643, one of 2 catalogued objects, reached a 191 × 285 km orbit inclined 64.8°. 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
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 395th Soyuz U flight · 6th this yearSoviet Space Program's 1,876th launch20th this yearhumanity's 2,930th orbital launch attempt26th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1643 · NORAD 15634 · 1985-026 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- COSMOS 1643
- Object ID
- 1985-026A
- Epoch
- 1985-03-25 11:21:16 UTC
- Mean motion
- 16.15852881 rev/day
- Eccentricity
- 0.007101
- Inclination
- 64.7748°
- Ascending node
- 8.1884°
- Arg. of perigee
- 60.3057°
- Mean anomaly
- 300.5194°
- Element set
- 999
- Rev at epoch
- 1
- 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-1643 · NORAD 15634 · deorbited October 18, 1985
Soyuz-U 56-204 Blok-I · re-entered March 29, 1985
Data from J. McDowell, planet4589.org
About this launch
First generation electro-optical reconnaissance satellite
Pad
1/5, Baikonur Cosmodrome, Republic of Kazakhstan
214th launch from 1/5, 2nd this year · 735th from Baikonur Cosmodrome, Republic of Kazakhstan
487 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
68 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Yantar-4KS1 3 launch?
Yantar-4KS1 3 launched on March 25, 1985. The time is known to the hour, not the minute.
Where can I watch Yantar-4KS1 3?
No webcast is on record for this launch.
What rocket launched Yantar-4KS1 3?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Yantar-4KS1 3 launch from?
1/5, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Yantar-4KS1 3 reach?
Kosmos-1643, one of 2 catalogued objects, reached a 191 × 285 km orbit inclined 64.8°.
How many satellites did Yantar-4KS1 3 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).