Soviet Space ProgramProton-K81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan
Proton-4
Launched
November 16, 1968
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
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

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
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
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).
![[AUTO] Proton - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fproton_image_20190207032625.jpeg&w=1600)