Soviet Space ProgramTsiklon-290, Baikonur Cosmodrome, Republic of Kazakhstan
US-A 26
Launched
August 1, 1985
Image: Ukrainian Space Agency
Summary
US-A 26 launched on a Soviet Space Program Tsiklon-2 from 90, Baikonur Cosmodrome, Republic of Kazakhstan on August 1, 1985. It was Soviet Space Program's 1,908th launch, 52nd this year and humanity's 2,969th orbital launch attempt. It was the 68th Tsiklon-2 flight and the 3rd this year. The payload was bound for low Earth orbit (LEO). Kosmos-1670, one of 6 catalogued objects, reached a 247 × 272 km orbit inclined 65.0°. 6 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
- 68th Tsiklon-2 flight · 3rd this yearSoviet Space Program's 1,908th launch52nd this yearhumanity's 2,969th orbital launch attempt65th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-1670 · NORAD 15930 · 1985-064 · Space-Track · tracking 1 of 6 objects
Show the numbers for orbit elements
- Object
- COSMOS 1670
- Object ID
- 1985-064A
- Epoch
- 1985-08-01 09:54:52 UTC
- Mean motion
- 16.07932394 rev/day
- Eccentricity
- 0.0018604
- Inclination
- 65.0173°
- Ascending node
- 68.065°
- Arg. of perigee
- 231.3818°
- Mean anomaly
- 128.5703°
- Element set
- 999
- Rev at epoch
- 2
- B*
- 0.002746
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
6 catalogued: 1 payload, 3 debris, 2 components; 2 still in orbit
- Kosmos-1670 · NORAD 15930 · 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
50th launch from 90, 3rd this year · 748th from Baikonur Cosmodrome, Republic of Kazakhstan
74 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
104 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did US-A 26 launch?
US-A 26 launched on August 1, 1985. The time is known to the hour, not the minute.
Where can I watch US-A 26?
No webcast is on record for this launch.
What rocket launched US-A 26?
Tsiklon-2, flown by Soviet Space Program. Tsiklon-2 spec sheet
Where did US-A 26 launch from?
90, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did US-A 26 reach?
Kosmos-1670, one of 6 catalogued objects, reached a 247 × 272 km orbit inclined 65.0°.
How many satellites did US-A 26 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
