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Soviet Space ProgramTsiklon-290/20, Baikonur Cosmodrome, Republic of Kazakhstan

I2P 4

Launched

October 23, 1970

Launch Successful

Image: Ukrainian Space Agency

Summary

I2P 4 launched on a Soviet Space Program Tsiklon-2 from 90/20, Baikonur Cosmodrome, Republic of Kazakhstan on October 23, 1970. It was Soviet Space Program's 522nd launch, 69th this year and humanity's 1,144th orbital launch attempt. It was the 5th Tsiklon-2 flight and the 3rd this year. The payload was bound for low Earth orbit (LEO). Kosmos-374, one of 97 catalogued objects, reached a 537 × 1,060 km orbit inclined 63.0°. 97 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
5th Tsiklon-2 flight · 3rd this yearSoviet Space Program's 522nd launch69th this yearhumanity's 1,144th orbital launch attempt98th orbital launch attempt this year

Flight preview

Orbit: as tracked

63.0°Inclination
537 × 1060 kmPerigee × apogeefrom mean elements
100.7 minPeriodfrom mean elements
129.3°Ascending node
20447 d agoElement epoch1970-10-23 07:51 UTC · stale

Kosmos-374 · NORAD 4594 · 1970-089 · Space-Track · tracking 1 of 97 objects

Show the numbers for orbit elements
Object
COSMOS 374
Object ID
1970-089A
Epoch
1970-10-23 07:51:15 UTC
Mean motion
14.30146897 rev/day
Eccentricity
0.036487
Inclination
62.9595°
Ascending node
129.295°
Arg. of perigee
62.8917°
Mean anomaly
300.8879°
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

97 catalogued: 1 payload, 96 debris; 19 still in orbit

  • Kosmos-374 · NORAD 4594 · broke up October 23, 1970

Data from J. McDowell, planet4589.org

About this launch

The I2P satellites were the first soviet coorbital ASAT system.

Pad

Map of 90/20

90/20, Baikonur Cosmodrome, Republic of Kazakhstan

5th launch from 90/20, 1st this year · 305th from Baikonur Cosmodrome, Republic of Kazakhstan

23 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan

303 days after the previous launch from this pad

Questions

When did I2P 4 launch?

I2P 4 launched on October 23, 1970. The time is known to the hour, not the minute.

Where can I watch I2P 4?

No webcast is on record for this launch.

What rocket launched I2P 4?

Tsiklon-2, flown by Soviet Space Program. Tsiklon-2 spec sheet

Where did I2P 4 launch from?

90/20, Baikonur Cosmodrome, Republic of Kazakhstan.

What orbit did I2P 4 reach?

Kosmos-374, one of 97 catalogued objects, reached a 537 × 1,060 km orbit inclined 63.0°.

How many satellites did I2P 4 launch?

1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).