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Soviet Space ProgramSoyuz U43/3 (43L), Plesetsk Cosmodrome, Russian Federation
Zenit-4MKT 1
Launched
September 25, 1975
Summary
Zenit-4MKT 1 launched on a Soviet Space Program Soyuz U from 43/3 (43L), Plesetsk Cosmodrome, Russian Federation on September 25, 1975. It was Soviet Space Program's 954th launch, 68th this year and humanity's 1,745th orbital launch attempt. It was the 20th Soyuz U flight and the 7th this year. The payload was bound for low Earth orbit (LEO). Kosmos-771, one of 4 catalogued objects, reached a 190 × 250 km orbit inclined 80.8°. 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
- 20th Soyuz U flight · 7th this yearSoviet Space Program's 954th launch68th this yearhumanity's 1,745th orbital launch attempt94th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-771 · NORAD 8327 · 1975-090 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1975-090A
- Epoch
- 1975-09-25 11:07:57 UTC
- Mean motion
- 16.2250828 rev/day
- Eccentricity
- 0.0045296
- Inclination
- 80.7989°
- Ascending node
- 175.2206°
- Arg. of perigee
- 180.5509°
- Mean anomaly
- 179.568°
- 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
4 catalogued: 1 payload, 1 rocket stage, 2 components; none still in orbit
- Kosmos-771 · NORAD 8327 · landed October 8, 1975
Soyuz-U 16-011 Blok-I · re-entered September 29, 1975
Data from J. McDowell, planet4589.org
About this launch
Film-return reconnaissance satellite
Pad
43/3 (43L), Plesetsk Cosmodrome, Russian Federation
32nd launch from 43/3 (43L), 11th this year · 444th from Plesetsk Cosmodrome, Russian Federation
234 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
13 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Zenit-4MKT 1 launch?
Zenit-4MKT 1 launched on September 25, 1975. The time is known to the hour, not the minute.
Where can I watch Zenit-4MKT 1?
No webcast is on record for this launch.
What rocket launched Zenit-4MKT 1?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Zenit-4MKT 1 launch from?
43/3 (43L), Plesetsk Cosmodrome, Russian Federation.
What orbit did Zenit-4MKT 1 reach?
Kosmos-771, one of 4 catalogued objects, reached a 190 × 250 km orbit inclined 80.8°.
How many satellites did Zenit-4MKT 1 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).