Soviet Space ProgramSoyuz U43/4 (43R), Plesetsk Cosmodrome, Russian Federation
Zenit-4MKT 26 (Kosmos 1597)
Launched
September 13, 1984
Summary
Zenit-4MKT 26 launched on a Soviet Space Program Soyuz U from 43/4 (43R), Plesetsk Cosmodrome, Russian Federation on September 13, 1984. It was Soviet Space Program's 1,835th launch, 76th this year and humanity's 2,874th orbital launch attempt. It was the 384th Soyuz U flight and the 33rd this year. The payload was bound for low Earth orbit (LEO). Kosmos-1597, one of 6 catalogued objects, reached a 219 × 251 km orbit inclined 82.3°. 6 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
- 384th Soyuz U flight · 33rd this yearSoviet Space Program's 1,835th launch76th this yearhumanity's 2,874th orbital launch attempt99th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1597 · NORAD 15287 · 1984-099 · Space-Track · tracking 1 of 6 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1984-099A
- Epoch
- 1984-09-13 11:43:19 UTC
- Mean motion
- 16.16969306 rev/day
- Eccentricity
- 0.002478
- Inclination
- 82.3357°
- Ascending node
- 175.2554°
- Arg. of perigee
- 107.6164°
- Mean anomaly
- 252.7473°
- 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
6 catalogued: 1 payload, 1 rocket stage, 4 components; none still in orbit
- Kosmos-1597 · NORAD 15287 · landed September 26, 1984
Soyuz-U 46-051 Blok-I · re-entered September 19, 1984
Data from J. McDowell, planet4589.org
About this launch
Film-return reconnaissance satellite
Pad

43/4 (43R), Plesetsk Cosmodrome, Russian Federation
173rd launch from 43/4 (43R), 10th this year · 1,018th from Plesetsk Cosmodrome, Russian Federation
329 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
14 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Zenit-4MKT 26 launch?
Zenit-4MKT 26 launched on September 13, 1984. The time is known to the hour, not the minute.
Where can I watch Zenit-4MKT 26?
No webcast is on record for this launch.
What rocket launched Zenit-4MKT 26?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Zenit-4MKT 26 launch from?
43/4 (43R), Plesetsk Cosmodrome, Russian Federation.
What orbit did Zenit-4MKT 26 reach?
Kosmos-1597, one of 6 catalogued objects, reached a 219 × 251 km orbit inclined 82.3°.
How many satellites did Zenit-4MKT 26 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)