Soviet Space ProgramVoskhod31/6, Baikonur Cosmodrome, Republic of Kazakhstan
Zenit-2M 21
Launched
July 30, 1971
Image: RKK Energia
Summary
Zenit-2M 21 launched on a Soviet Space Program Voskhod from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on July 30, 1971. It was Soviet Space Program's 590th launch, 49th this year and humanity's 1,244th orbital launch attempt. It was the 160th Voskhod flight and the 17th this year. The payload was bound for low Earth orbit (LEO). Kosmos-431, one of 3 catalogued objects, reached a 212 × 251 km orbit inclined 51.8°. 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
- 160th Voskhod flight · 17th this yearSoviet Space Program's 590th launch49th this yearhumanity's 1,244th orbital launch attempt73rd orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-431 · NORAD 5364 · 1971-065 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1971-065A
- Epoch
- 1971-07-30 11:16:22 UTC
- Mean motion
- 16.1838131 rev/day
- Eccentricity
- 0.0029619
- Inclination
- 51.8002°
- Ascending node
- 84.4405°
- Arg. of perigee
- 110.7001°
- Mean anomaly
- 249.7156°
- 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
3 catalogued: 1 payload, 1 rocket stage, 1 component; none still in orbit
- Kosmos-431 · NORAD 5364 · landed August 11, 1971
Voskhod (N160) Blok-I · re-entered August 4, 1971
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
117th launch from 31/6, 9th this year · 331st from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
9 days 22 hours after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Zenit-2M 21 launch?
Zenit-2M 21 launched on July 30, 1971. The time is known to the hour, not the minute.
Where can I watch Zenit-2M 21?
No webcast is on record for this launch.
What rocket launched Zenit-2M 21?
Voskhod, flown by Soviet Space Program. Voskhod spec sheet
Where did Zenit-2M 21 launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Zenit-2M 21 reach?
Kosmos-431, one of 3 catalogued objects, reached a 212 × 251 km orbit inclined 51.8°.
How many satellites did Zenit-2M 21 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
