Soviet Space ProgramVoskhod31/6, Baikonur Cosmodrome, Republic of Kazakhstan
Zenit-2M 51
Launched
September 20, 1974
Image: RKK Energia
Summary
Zenit-2M 51 launched on a Soviet Space Program Voskhod from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on September 20, 1974. It was Soviet Space Program's 861st launch, 60th this year and humanity's 1,617th orbital launch attempt. It was the 254th Voskhod flight and the 19th this year. The payload was bound for low Earth orbit (LEO). Kosmos-685, one of 3 catalogued objects, reached a 205 × 287 km orbit inclined 65.1°. 3 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
- 254th Voskhod flight · 19th this yearSoviet Space Program's 861st launch60th this yearhumanity's 1,617th orbital launch attempt79th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-685 · NORAD 7445 · 1974-073 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1974-073A
- Epoch
- 1974-09-20 10:51:29 UTC
- Mean motion
- 16.12971432 rev/day
- Eccentricity
- 0.0061768
- Inclination
- 65.0877°
- Ascending node
- 177.3298°
- Arg. of perigee
- 43.02°
- Mean anomaly
- 317.5729°
- 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
3 catalogued: 1 payload, 1 rocket stage, 1 component; none still in orbit
- Kosmos-685 · NORAD 7445 · landed October 2, 1974
Voskhod 31-194 Blok-I · re-entered September 26, 1974
Data from J. McDowell, planet4589.org
About this launch
The soviet Zenit-2M (Gektor, 11F690) was an improved version of the Zenit-2 area surveillance reconnaissance satellite. It was part of the Vostok-based Zenit-family.
Pad

31/6, Baikonur Cosmodrome, Republic of Kazakhstan
154th launch from 31/6, 10th this year · 409th from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
22 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Zenit-2M 51 launch?
Zenit-2M 51 launched on September 20, 1974. The time is known to the hour, not the minute.
Where can I watch Zenit-2M 51?
No webcast is on record for this launch.
What rocket launched Zenit-2M 51?
Voskhod, flown by Soviet Space Program. Voskhod spec sheet
Where did Zenit-2M 51 launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Zenit-2M 51 reach?
Kosmos-685, one of 3 catalogued objects, reached a 205 × 287 km orbit inclined 65.1°.
How many satellites did Zenit-2M 51 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
