Soviet Space ProgramTsiklon-290, Baikonur Cosmodrome, Republic of Kazakhstan
IS-A 6
Launched
June 17, 1977
Image: Ukrainian Space Agency
Summary
IS-A 6 launched on a Soviet Space Program Tsiklon-2 from 90, Baikonur Cosmodrome, Republic of Kazakhstan on June 17, 1977. It was Soviet Space Program's 1,119th launch, 39th this year and humanity's 1,966th orbital launch attempt. It was the 31st Tsiklon-2 flight and the 2nd this year. The payload was bound for low Earth orbit (LEO). Kosmos-918, one of 2 catalogued objects, reached a 134 × 250 km orbit inclined 65.1°. 2 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
- 31st Tsiklon-2 flight · 2nd this yearSoviet Space Program's 1,119th launch39th this yearhumanity's 1,966th orbital launch attempt51st orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-918 · NORAD 10065 · 1977-050 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1977-050A
- Epoch
- 1977-06-17 10:13:13 UTC
- Mean motion
- 16.32785797 rev/day
- Eccentricity
- 0.0088337
- Inclination
- 65.11°
- Ascending node
- 50.8841°
- Arg. of perigee
- 14.4343°
- Mean anomaly
- 358.4595°
- Element set
- 999
- Rev at epoch
- 2
- 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
2 catalogued: 1 payload, 1 rocket stage; none still in orbit
- Kosmos-918 · NORAD 10065 · deorbited June 17, 1977
Tsiklon-2 46-501 Stage 2 · re-entered June 18, 1977
Data from J. McDowell, planet4589.org
About this launch
Second generation ASAT satellite
Pad

90, Baikonur Cosmodrome, Republic of Kazakhstan
13th launch from 90, 2nd this year · 486th from Baikonur Cosmodrome, Republic of Kazakhstan
74 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
24 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did IS-A 6 launch?
IS-A 6 launched on June 17, 1977. The time is known to the hour, not the minute.
Where can I watch IS-A 6?
No webcast is on record for this launch.
What rocket launched IS-A 6?
Tsiklon-2, flown by Soviet Space Program. Tsiklon-2 spec sheet
Where did IS-A 6 launch from?
90, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did IS-A 6 reach?
Kosmos-918, one of 2 catalogued objects, reached a 134 × 250 km orbit inclined 65.1°.
How many satellites did IS-A 6 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
