Soviet Space ProgramTsiklon-290, Baikonur Cosmodrome, Republic of Kazakhstan
US-A 28
Launched
March 21, 1986
Image: Ukrainian Space Agency
Summary
US-A 28 launched on a Soviet Space Program Tsiklon-2 from 90, Baikonur Cosmodrome, Republic of Kazakhstan on March 21, 1986. It was Soviet Space Program's 1,975th launch, 19th this year and humanity's 3,054th orbital launch attempt. It was the 72nd Tsiklon-2 flight and the 2nd this year. The payload was bound for low Earth orbit (LEO). Kosmos-1736, one of 30 catalogued objects, reached a 253 × 273 km orbit inclined 65.0°. 30 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
- 72nd Tsiklon-2 flight · 2nd this yearSoviet Space Program's 1,975th launch19th this yearhumanity's 3,054th orbital launch attempt25th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1736 · NORAD 16647 · 1986-024 · Space-Track · tracking 1 of 30 objects
Show the numbers for orbit elements
- Object
- COSMOS 1736
- Object ID
- 1986-024A
- Epoch
- 1986-03-21 11:24:46 UTC
- Mean motion
- 16.06791836 rev/day
- Eccentricity
- 0.0015391
- Inclination
- 64.9982°
- Ascending node
- 4.6062°
- Arg. of perigee
- 251.108°
- Mean anomaly
- 108.8401°
- 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: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
30 catalogued: 1 payload, 25 debris, 4 components; 2 still in orbit
- Kosmos-1736 · NORAD 16647 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Active radar satellite for ocean surveillance powered by a nuclear reactor.
Pad

90, Baikonur Cosmodrome, Republic of Kazakhstan
54th launch from 90, 2nd this year · 771st from Baikonur Cosmodrome, Republic of Kazakhstan
74 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
22 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did US-A 28 launch?
US-A 28 launched on March 21, 1986. The time is known to the hour, not the minute.
Where can I watch US-A 28?
No webcast is on record for this launch.
What rocket launched US-A 28?
Tsiklon-2, flown by Soviet Space Program. Tsiklon-2 spec sheet
Where did US-A 28 launch from?
90, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did US-A 28 reach?
Kosmos-1736, one of 30 catalogued objects, reached a 253 × 273 km orbit inclined 65.0°.
How many satellites did US-A 28 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
