Soviet Space ProgramVoskhod31/6, Baikonur Cosmodrome, Republic of Kazakhstan
Zenit-4MK 42
Launched
May 28, 1975
Image: RKK Energia
Summary
Zenit-4MK 42 launched on a Soviet Space Program Voskhod from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on May 28, 1975. It was Soviet Space Program's 920th launch, 34th this year and humanity's 1,700th orbital launch attempt. It was the 270th Voskhod flight and the 11th this year. The payload was bound for low Earth orbit (LEO). Kosmos-740, one of 5 catalogued objects, reached a 178 × 335 km orbit inclined 65.0°. 5 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
- 270th Voskhod flight · 11th this yearSoviet Space Program's 920th launch34th this yearhumanity's 1,700th orbital launch attempt49th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-740 · NORAD 7821 · 1975-046 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1975-046A
- Epoch
- 1975-05-28 08:51:46 UTC
- Mean motion
- 16.09167238 rev/day
- Eccentricity
- 0.0118072
- Inclination
- 64.9976°
- Ascending node
- 33.4745°
- Arg. of perigee
- 57.7857°
- Mean anomaly
- 303.4648°
- 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
5 catalogued: 1 payload, 1 rocket stage, 3 components; none still in orbit
- Kosmos-740 · NORAD 7821 · landed June 10, 1975
Voskhod 16-655 Blok-I · re-entered June 3, 1975
Data from J. McDowell, planet4589.org
About this launch
High resolution optical reconnaissance satellite of the Vostok-based Zenit family.
Pad

31/6, Baikonur Cosmodrome, Republic of Kazakhstan
163rd launch from 31/6, 7th this year · 427th from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
7 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Zenit-4MK 42 launch?
Zenit-4MK 42 launched on May 28, 1975. The time is known to the hour, not the minute.
Where can I watch Zenit-4MK 42?
No webcast is on record for this launch.
What rocket launched Zenit-4MK 42?
Voskhod, flown by Soviet Space Program. Voskhod spec sheet
Where did Zenit-4MK 42 launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Zenit-4MK 42 reach?
Kosmos-740, one of 5 catalogued objects, reached a 178 × 335 km orbit inclined 65.0°.
How many satellites did Zenit-4MK 42 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
