Soviet Space ProgramTsiklon-290/20, Baikonur Cosmodrome, Republic of Kazakhstan
US-A 10
Launched
April 7, 1975
Image: Ukrainian Space Agency
Summary
US-A 10 launched on a Soviet Space Program Tsiklon-2 from 90/20, Baikonur Cosmodrome, Republic of Kazakhstan on April 7, 1975. It was Soviet Space Program's 907th launch, 21st this year and humanity's 1,678th orbital launch attempt. It was the 19th Tsiklon-2 flight and the 2nd this year. The payload was bound for low Earth orbit (LEO). Kosmos-724, one of 4 catalogued objects, reached a 254 × 276 km orbit inclined 65.0°. 4 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Tsiklon-2 · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 19th Tsiklon-2 flight · 2nd this yearSoviet Space Program's 907th launch21st this yearhumanity's 1,678th orbital launch attempt27th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-724 · NORAD 7727 · 1975-025 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- COSMOS 724
- Object ID
- 1975-025A
- Epoch
- 1975-04-07 12:19:46 UTC
- Mean motion
- 16.05955082 rev/day
- Eccentricity
- 0.0016179
- Inclination
- 64.9728°
- Ascending node
- 34.7957°
- Arg. of perigee
- 257.6325°
- Mean anomaly
- 102.2984°
- 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
4 catalogued: 1 payload, 1 debris, 2 components; 1 still in orbit
- Kosmos-724 · NORAD 7727 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Active radar satellite for ocean surveillance powered by a nuclear reactor.
Pad

90/20, Baikonur Cosmodrome, Republic of Kazakhstan
12th launch from 90/20, 2nd this year · 423rd from Baikonur Cosmodrome, Republic of Kazakhstan
23 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
5 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did US-A 10 launch?
US-A 10 launched on April 7, 1975. The time is known to the hour, not the minute.
Where can I watch US-A 10?
No webcast is on record for this launch.
What rocket launched US-A 10?
Tsiklon-2, flown by Soviet Space Program. Tsiklon-2 spec sheet
Where did US-A 10 launch from?
90/20, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did US-A 10 reach?
Kosmos-724, one of 4 catalogued objects, reached a 254 × 276 km orbit inclined 65.0°.
How many satellites did US-A 10 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
