Soviet Space ProgramKosmos-3M (11K65M)132/2, Plesetsk Cosmodrome, Russian Federation
Tselina-O 20
Launched
August 28, 1973
Image: Julio Perez Suarez
Summary
Tselina-O 20 launched on a Soviet Space Program Kosmos-3M (11K65M) from 132/2, Plesetsk Cosmodrome, Russian Federation on August 28, 1973. It was Soviet Space Program's 761st launch, 49th this year and humanity's 1,488th orbital launch attempt. It was the 71st Kosmos-3M (11K65M) flight and the 7th this year. The payload was bound for low Earth orbit (LEO). The tracked orbit of Kosmos-582, one of 5 catalogued objects, from August 31, 1973, was 525 × 549 km inclined 74.0°. 5 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Kosmos-3M (11K65M) · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 71st Kosmos-3M (11K65M) flight · 7th this yearSoviet Space Program's 761st launch49th this yearhumanity's 1,488th orbital launch attempt66th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-582 · NORAD 6802 · 1973-060 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- COSMOS 582
- Object ID
- 1973-060A
- Epoch
- 1973-08-31 06:11:27 UTC
- Mean motion
- 15.12109852 rev/day
- Eccentricity
- 0.0017171
- Inclination
- 74.0364°
- Ascending node
- 130.9393°
- Arg. of perigee
- 359.4555°
- Mean anomaly
- 0.6567°
- Element set
- 999
- Rev at epoch
- 43
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.
Catalogued objects
5 catalogued: 1 payload, 1 rocket stage, 1 debris, 2 components; none still in orbit
- Kosmos-582 · NORAD 6802 · re-entered September 5, 1980
Kosmos-3M 33-201 Stage 2 · re-entered January 1, 1981
Data from J. McDowell, planet4589.org
About this launch
The Tselina-O (11F616) was one component of two-satellite Tselina ELINT satellite system. Tselina-O provided general ELINT surveillance to be examined in detail by the larger Tselina-D satellites.
Pad

132/2, Plesetsk Cosmodrome, Russian Federation
44th launch from 132/2, 1st this year · 305th from Plesetsk Cosmodrome, Russian Federation
172 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
245 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did Tselina-O 20 launch?
Tselina-O 20 launched on August 28, 1973. The time is known to the hour, not the minute.
Where can I watch Tselina-O 20?
No webcast is on record for this launch.
What rocket launched Tselina-O 20?
Kosmos-3M (11K65M), flown by Soviet Space Program. Kosmos-3M (11K65M) spec sheet
Where did Tselina-O 20 launch from?
132/2, Plesetsk Cosmodrome, Russian Federation.
What orbit did Tselina-O 20 reach?
The tracked orbit of Kosmos-582, one of 5 catalogued objects, from August 31, 1973, was 525 × 549 km inclined 74.0°.
How many satellites did Tselina-O 20 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
