Soviet Space ProgramMolniya-M 2BL31/6, Baikonur Cosmodrome, Republic of Kazakhstan
Prognoz-4
Launched
December 22, 1975
Image: Jonathan Space Report
Summary
Prognoz-4 launched on a Soviet Space Program Molniya-M 2BL from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on December 22, 1975. It was Soviet Space Program's 976th launch, 90th this year and humanity's 1,780th orbital launch attempt. It was the 69th Molniya-M 2BL flight and the 11th this year. The payload was bound for Elliptical Orbit (Elliptical). Prognoz-4, one of 3 catalogued objects, reached a 239 × 472 km orbit inclined 65.0°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Molniya-M 2BL · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Heliophysics · Elliptical Orbit (Elliptical)
- Milestone
- 69th Molniya-M 2BL flight · 11th this yearSoviet Space Program's 976th launch90th this yearhumanity's 1,780th orbital launch attempt129th orbital launch attempt this year
Flight preview
Orbit: as tracked
Prognoz-4 · NORAD 8510 · 1975-122 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- PROGNOZ 4
- Object ID
- 1975-122A
- Epoch
- 1975-12-22 03:31:35 UTC
- Mean motion
- 15.73769722 rev/day
- Eccentricity
- 0.0173036
- Inclination
- 65.0393°
- Ascending node
- 157.7929°
- Arg. of perigee
- 66.4808°
- Mean anomaly
- 295.4373°
- Element set
- 999
- Rev at epoch
- 34341
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: Elliptical. Ascent drawn from padside's representative profile.
Catalogued objects
3 catalogued: 1 payload, 1 rocket stage, 1 component
- Prognoz-4 · NORAD 8510 · left Earth orbit December 22, 1975
Molniya-M 41-575 Blok-I · re-entered February 22, 1976
Data from J. McDowell, planet4589.org
About this launch
Prognoz is a series of research satellites to study solar activity and its influence on Earth's magnetosphere and ionosphere.
Pad

31/6, Baikonur Cosmodrome, Republic of Kazakhstan
169th launch from 31/6, 13th this year · 442nd from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
5 days 16 hours after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Prognoz-4 launch?
Prognoz-4 launched on December 22, 1975. The time is known to the hour, not the minute.
Where can I watch Prognoz-4?
No webcast is on record for this launch.
What rocket launched Prognoz-4?
Molniya-M 2BL, flown by Soviet Space Program. Molniya-M 2BL spec sheet
Where did Prognoz-4 launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did Prognoz-4 reach?
Prognoz-4, one of 3 catalogued objects, reached a 239 × 472 km orbit inclined 65.0°.
How many satellites did Prognoz-4 launch?
1 payload from this launch is catalogued (Data from J. McDowell, planet4589.org).
