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Soviet Space ProgramProton-K81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan

Proton-4

Launched

November 16, 1968

Launch Successful

Summary

Proton-4 launched on a Soviet Space Program Proton-K from 81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan on November 16, 1968. It was Soviet Space Program's 362nd launch, 73rd this year and humanity's 902nd orbital launch attempt. It was the 1st Proton-K flight. The payload was bound for low Earth orbit (LEO). Proton-4, one of 2 catalogued objects, reached a 250 × 474 km orbit inclined 51.5°. 2 objects from this launch are catalogued, one of them a payload.

Watch
No webcast on record.
Vehicle
Proton-K · Soviet Space Program
Booster
No booster details on record.
Mission
Earth Science · Low Earth Orbit (LEO)
Milestone
1st Proton-K flightSoviet Space Program's 362nd launch73rd this yearhumanity's 902nd orbital launch attempt114th orbital launch attempt this year

Flight preview

Orbit: as tracked

51.5°Inclination
250 × 474 kmPerigee × apogeefrom mean elements
91.6 minPeriodfrom mean elements
239.5°Ascending node
21152 d agoElement epoch1968-11-16 13:00 UTC · stale

Proton-4 · NORAD 3544 · 1968-103 · Space-Track · tracking 1 of 2 objects

Show the numbers for orbit elements
Object
TBA - TO BE ASSIGNED
Object ID
1968-103A
Epoch
1968-11-16 13:00:30 UTC
Mean motion
15.7144261 rev/day
Eccentricity
0.0165816
Inclination
51.5487°
Ascending node
239.5078°
Arg. of perigee
85.0059°
Mean anomaly
276.985°
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

2 catalogued: 1 payload, 1 rocket stage; none still in orbit

  • Proton-4 · NORAD 3544 · re-entered July 24, 1969

Proton-K 236-01 Stage 3 · re-entered January 25, 1969

Data from J. McDowell, planet4589.org

About this launch

Satellite designed to study the interaction of elementary particles with energies in excess of 1012 eV up to 1015 eV.

Pad

Map of 81/24 (81P)

81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan

3rd launch from 81/24 (81P), 2nd this year · 243rd from Baikonur Cosmodrome, Republic of Kazakhstan

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

207 days after the previous launch from this pad

Questions

When did Proton-4 launch?

Proton-4 launched on November 16, 1968. The time is known to the hour, not the minute.

Where can I watch Proton-4?

No webcast is on record for this launch.

What rocket launched Proton-4?

Proton-K, flown by Soviet Space Program. Proton-K spec sheet

Where did Proton-4 launch from?

81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan.

What orbit did Proton-4 reach?

Proton-4, one of 2 catalogued objects, reached a 250 × 474 km orbit inclined 51.5°.

How many satellites did Proton-4 launch?

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