Photo: NASA · Public domain (US government)

Zenit-6U 4

Success Soviet Union, Soyuz U

Show on globe

Zenit-6U 4: the flight path in 3D, from the pad to orbit, seen from space Replay the flight in 3D

About this launch

Optical film-return reconnaissance satellite

More about this launch

Flight profileThe climb, seen from the side · 3D replay on the globe
to orbit0 km1,150 km downrange200 km up

Watch the 3D simulation →

Launch window and padPlesetsk Cosmodrome, Russian Federation
Site
Plesetsk Cosmodrome, Russian Federation

Everything launching from Plesetsk Cosmodrome →

Rocket and boosterSoyuz U
Vehicle
Soyuz U

Soyuz U: specs, record and next flights → Soviet Union: all its launches →

MissionGovernment/Top Secret · LEO

Government/Top Secret · LEO

What it put in orbit7 catalogued objects
ObjectTypeOrbit
COSMOS 958 1977-100A Payload re-entered 1977-10-24
SL-4 R/B 1977-100B Rocket body re-entered 1977-11-09
SL-4 DEB 1977-100C Debris re-entered 1977-10-31
COSMOS 958 DEB 1977-100D Debris re-entered 1978-03-05
COSMOS 958 DEB 1977-100E Debris re-entered 1978-09-15
COSMOS 958 DEB 1977-100F Debris re-entered 1978-06-18
COSMOS 958 DEB 1977-100G Debris re-entered 1978-01-16

COSPAR ID 1977-100. Orbits from the CelesTrak satellite catalogue (perigee × apogee, inclination).

Support NextLiftoff The site has no ads. If it's useful to you, a small tip helps pay for the server.

Suggest something

An idea, something broken, a launch with wrong data? It goes straight to me.

Only what you type and the page you're on are kept, no IP address. See the privacy policy.

Follow & remind

Change the times and more
Follow this flight
Reminders before liftoff
Also notify me of

If the launch moves, your reminders move with it.

No pop-ups? Put it in your calendar · as a Discord message

Follow

Every launch, as soon as it's announced.

Remind me before each launch

Reminders follow each launch when it moves. You can change this any time here or on the Notifications page.