Soviet Space ProgramVoskhod41/1, Plesetsk Cosmodrome, Russian Federation
Zenit-2M 55
Launched
March 26, 1975
Image: RKK Energia
Summary
Zenit-2M 55 launched on a Soviet Space Program Voskhod from 41/1, Plesetsk Cosmodrome, Russian Federation on March 26, 1975. It was Soviet Space Program's 901st launch, 15th this year and humanity's 1,672nd orbital launch attempt. It was the 265th Voskhod flight and the 6th this year. The payload was bound for low Earth orbit (LEO). Kosmos-721, one of 6 catalogued objects, reached a 200 × 242 km orbit inclined 81.3°. 6 objects from this launch are catalogued, 2 of them payloads.
- 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
- 265th Voskhod flight · 6th this yearSoviet Space Program's 901st launch15th this yearhumanity's 1,672nd orbital launch attempt21st orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-721 · NORAD 7705 · 1975-020 · Space-Track · tracking 1 of 6 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1975-020A
- Epoch
- 1975-03-26 10:08:09 UTC
- Mean motion
- 16.22008156 rev/day
- Eccentricity
- 0.0031487
- Inclination
- 81.3301°
- Ascending node
- 340.0362°
- Arg. of perigee
- 348.1154°
- Mean anomaly
- 11.933°
- 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
6 catalogued: 2 payloads, 1 rocket stage, 3 components; none still in orbit
- Kosmos-721 · NORAD 7705 · landed April 7, 1975
- Kapsula Kosmosa-721 · NORAD 7721 · re-entered April 10, 1975
Voskhod 41-199 Blok-I · re-entered March 29, 1975
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
41/1, Plesetsk Cosmodrome, Russian Federation
126th launch from 41/1, 5th this year · 406th from Plesetsk Cosmodrome, Russian Federation
310 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
41 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Zenit-2M 55 launch?
Zenit-2M 55 launched on March 26, 1975. The time is known to the hour, not the minute.
Where can I watch Zenit-2M 55?
No webcast is on record for this launch.
What rocket launched Zenit-2M 55?
Voskhod, flown by Soviet Space Program. Voskhod spec sheet
Where did Zenit-2M 55 launch from?
41/1, Plesetsk Cosmodrome, Russian Federation.
What orbit did Zenit-2M 55 reach?
Kosmos-721, one of 6 catalogued objects, reached a 200 × 242 km orbit inclined 81.3°.
How many satellites did Zenit-2M 55 launch?
2 payloads from this launch are catalogued, none of them still in orbit (Data from J. McDowell, planet4589.org).