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Soviet Space ProgramSoyuz U1/5, Baikonur Cosmodrome, Republic of Kazakhstan
Soyuz 25
Launched
October 9, 1977 · 02:40 UTC
Summary
Soyuz 25 launched on a Soviet Space Program Soyuz U from 1/5, Baikonur Cosmodrome, Republic of Kazakhstan on October 9, 1977 at 02:40 UTC. It was Soviet Space Program's 1,162nd launch, 82nd this year and humanity's 2,019th orbital launch attempt. It was the 80th Soyuz U flight and the 33rd this year. The payload was bound for low Earth orbit (LEO). Soyuz-25, one of 2 catalogued objects, reached a 201 × 248 km orbit inclined 51.6°. 2 crew members flew: Vladimir Kovalyonok and Valery Ryumin. The spacecraft was Soyuz 25 (Soyuz 7K-T 11F615A8 #42). 2 objects from this launch are catalogued, one of them a payload.
- Watch
- Booster
- No booster details on record.
- Mission
- Human Exploration · Low Earth Orbit (LEO)
- Milestone
- 80th Soyuz U flight · 33rd this yearSoviet Space Program's 1,162nd launch82nd this yearhumanity's 2,019th orbital launch attempt104th orbital launch attempt this year
Crew
Vladimir KovalyonokCommander · RFSA · age 34 · first flight
Valery RyuminFlight Engineer · RFSA · age 38 · first flight
Spacecraft
Soyuz 25 (Soyuz 7K-T 11F615A8 #42)
Soyuz 25 was a Soyuz spacecraft which launched on 9 October 1977 02:40 UTC. It transported two cosmonauts to Salyut 6. Soyuz 25 was the first flight to the new Salyut 6 Space Station, but the craft failed to dock. The crew was Vladimir Kovalyonok and Valery Ryumin.
- Destination: Salyut 6
- Mission length: 2 days
The Soyuz spacecraft safely landed in Kazakhstan.
Flight preview
Orbit: as tracked
Soyuz-25 · NORAD 10401 · 1977-099 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1977-099A
- Epoch
- 1977-10-09 06:55:39 UTC
- Mean motion
- 16.20895767 rev/day
- Eccentricity
- 0.003552
- Inclination
- 51.6371°
- Ascending node
- 66.6915°
- Arg. of perigee
- 73.3508°
- Mean anomaly
- 286.8747°
- Element set
- 999
- Rev at epoch
- 3
- 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
- Soyuz-25 · NORAD 10401 · landed October 11, 1977
Soyuz-U No. 103 Blok-I · re-entered October 11, 1977
Data from J. McDowell, planet4589.org
About this launch
Soyuz 25 was meant to be the first crewed flight to the new Salyut 6 space station. The mission began on October 9, 1977, 02:40:35 UTC, launching Commander Vladimir Kovalyonok and Flight Engineer Valery Rumin into orbit. However, they failed to dock with the station despite five attempts, and had to abort the mission. The mission concluded with a safe landing back on Earth on October 11, 1977, 03:25:20 UTC.
Pad
1/5, Baikonur Cosmodrome, Republic of Kazakhstan
161st launch from 1/5, 3rd this year · 502nd from Baikonur Cosmodrome, Republic of Kazakhstan
Local pad time at liftoff: Oct 9, 7:40 AM GMT+5, in daylight
487 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
106 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did Soyuz 25 launch?
Soyuz 25 launched on October 9, 1977 at 02:40 UTC.
Where can I watch Soyuz 25?
Coverage: Soyuz 25. Baikonur cosmodrome. Launch. Watch the replay
What rocket launched Soyuz 25?
Soyuz U, flown by Soviet Space Program. Soyuz U spec sheet
Where did Soyuz 25 launch from?
1/5, Baikonur Cosmodrome, Republic of Kazakhstan. Liftoff was Oct 9, 7:40 AM GMT+5 local time at the pad.
What orbit did Soyuz 25 reach?
Soyuz-25, one of 2 catalogued objects, reached a 201 × 248 km orbit inclined 51.6°.
Which program is Soyuz 25 part of?
Salyut and Soyuz. About Salyut