Soviet Space ProgramVoskhod41/1, Plesetsk Cosmodrome, Russian Federation
Zenit-4 55
Launched
April 4, 1969
Image: RKK Energia
Summary
Zenit-4 55 launched on a Soviet Space Program Voskhod from 41/1, Plesetsk Cosmodrome, Russian Federation on April 4, 1969. It was Soviet Space Program's 397th launch, 26th this year and humanity's 958th orbital launch attempt. It was the 90th Voskhod flight and the 9th this year. The payload was bound for low Earth orbit (LEO). Kosmos-276, one of 2 catalogued objects, reached a 208 × 378 km orbit inclined 81.4°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Voskhod · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 90th Voskhod flight · 9th this yearSoviet Space Program's 397th launch26th this yearhumanity's 958th orbital launch attempt39th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-276 · NORAD 3854 · 1969-032 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1969-032A
- Epoch
- 1969-04-04 13:09:53 UTC
- Mean motion
- 15.96027751 rev/day
- Eccentricity
- 0.0127642
- Inclination
- 81.3767°
- Ascending node
- 11.9007°
- Arg. of perigee
- 84.4933°
- Mean anomaly
- 277.0891°
- Element set
- 999
- Rev at epoch
- 2
- 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-276 · NORAD 3854 · landed April 11, 1969
Voskhod (N90) Blok-I · re-entered April 14, 1969
Data from J. McDowell, planet4589.org
About this launch
Zenit-4 film-return reconnaissance satellite.
Pad

41/1, Plesetsk Cosmodrome, Russian Federation
51st launch from 41/1, 8th this year · 80th from Plesetsk Cosmodrome, Russian Federation
310 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
8 days 21 hours after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Zenit-4 55 launch?
Zenit-4 55 launched on April 4, 1969. The time is known to the hour, not the minute.
Where can I watch Zenit-4 55?
No webcast is on record for this launch.
What rocket launched Zenit-4 55?
Voskhod, flown by Soviet Space Program. Voskhod spec sheet
Where did Zenit-4 55 launch from?
41/1, Plesetsk Cosmodrome, Russian Federation.
What orbit did Zenit-4 55 reach?
Kosmos-276, one of 2 catalogued objects, reached a 208 × 378 km orbit inclined 81.4°.
How many satellites did Zenit-4 55 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
