PAD200/39 (200L)
SITEBaikonur Cosmodrome, Republic of Kazakhstan →ORBITGeostationary Orbit
TYPECommunications
MISSION OVERVIEW
Geostationary military relay satellite
LAUNCH DETAILS
VEHICLE
ProtonAGENCY
Soviet Space ProgramMISSION
Potok 4
MISSION TYPE
Communications
TARGET ORBIT
Geostationary Orbit
LAUNCH PAD
200/39 (200L)LAUNCH SITE
Baikonur Cosmodrome, Republic of KazakhstanCOUNTRY
RUS
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: e47e7b23-1ab1-402a-958e-a67f44a56e4e
Reported date: Oct 1, 1987 at 17:09 UTC
Last synced: 9 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Proton →
MANUFACTURER
Khrunichev State Research and Production Space Center
VARIANT
K/DM-2
FLIGHTS
110
SUCCESSES
103
SUCCESS RATE
93.6%
FREQUENTLY ASKED QUESTIONS
When is the Proton | Potok 4 launch?
The Proton | Potok 4 is scheduled for Thursday, October 1, 1987 at 5:09 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Potok 4?
The Proton | Potok 4 mission uses the Proton rocket, manufactured by Khrunichev State Research and Production Space Center. The Proton has flown 110 times with a 93.6% success rate.
Where is the Proton | Potok 4 launching from?
The launch takes place from 200/39 (200L) at Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit is Potok 4 going to?
The Potok 4 mission is targeting Geostationary Orbit.
Who is launching Potok 4?
The Proton | Potok 4 is operated by Soviet Space Program.
Can I watch the Proton | Potok 4 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 29, 2026 05:33 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 05:33 UTC
Launch date set: Oct 1, 1987 at 17:09 UTC
NET (No Earlier Than) confirmed by Soviet Space Program
Mar 29, 2026 05:33 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 9 hours ago
●Launch Library 221 hours ago
Launch ID: e47e7b23-1ab1-402a-958e-a67f44a56e4e
●Open-Meteo Weather21 hours ago
Pad weather at 46.04, 63.03
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Mission Profile
Potok 4 was a Proton K/DM-2 mission operated by Soviet Space Program that lifted off from 200/39 (200L), Baikonur Cosmodrome, Republic of Kazakhstan on October 1, 1987. The flight carried its payload on a communications mission to Geostationary Orbit. The launch was a success.