Soviet Space ProgramMolniya-M 2BL41/1, Plesetsk Cosmodrome, Russian Federation
US-K 1
Launched
September 19, 1972
Image: Jonathan Space Report
Summary
US-K 1 launched on a Soviet Space Program Molniya-M 2BL from 41/1, Plesetsk Cosmodrome, Russian Federation on September 19, 1972. It was Soviet Space Program's 689th launch, 57th this year and humanity's 1,385th orbital launch attempt. It was the 37th Molniya-M 2BL flight and the 7th this year. The payload was bound for Elliptical Orbit (Elliptical). Kosmos-520, one of 5 catalogued objects, reached a 659 × 39,326 km orbit inclined 62.9°. 5 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
- Government/Top Secret · Elliptical Orbit (Elliptical)
- Milestone
- 37th Molniya-M 2BL flight · 7th this yearSoviet Space Program's 689th launch57th this yearhumanity's 1,385th orbital launch attempt79th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-520 · NORAD 6192 · 1972-072 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- COSMOS 520
- Object ID
- 1972-072A
- Epoch
- 1972-09-19 20:23:33 UTC
- Mean motion
- 2.028169 rev/day
- Eccentricity
- 0.733343
- Inclination
- 62.8779°
- Ascending node
- 238.2443°
- Arg. of perigee
- 324.525°
- Mean anomaly
- 0.0054°
- Element set
- 999
- Rev at epoch
- 0
- 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
5 catalogued: 1 payload, 2 rocket stages, 2 components; 2 still in orbit
- Kosmos-520 · NORAD 6192 · in orbit
Molniya-M No. 100 Blok-I · re-entered October 20, 1972
Blok-L · in orbit
Data from J. McDowell, planet4589.org
About this launch
Early warning satellite
Pad

41/1, Plesetsk Cosmodrome, Russian Federation
88th launch from 41/1, 5th this year · 254th from Plesetsk Cosmodrome, Russian Federation
310 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
81 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did US-K 1 launch?
US-K 1 launched on September 19, 1972. The time is known to the hour, not the minute.
Where can I watch US-K 1?
No webcast is on record for this launch.
What rocket launched US-K 1?
Molniya-M 2BL, flown by Soviet Space Program. Molniya-M 2BL spec sheet
Where did US-K 1 launch from?
41/1, Plesetsk Cosmodrome, Russian Federation.
What orbit did US-K 1 reach?
Kosmos-520, one of 5 catalogued objects, reached a 659 × 39,326 km orbit inclined 62.9°.
How many satellites did US-K 1 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
