7K-T Satellite Bus
Data current as of 2026-07-21.
The 7K-T bus accounts for 23 cataloged objects, of which 0 are in orbit and 0 are active. 23 have reentered. Most are built by NPOE. The largest operator on this bus is NPOE. The first launched in 1972, the most recent in 1981.
0
In orbit
0
Active
23
Total launched
23
Reentered
7K-T launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged 7K-T satellites.
| Manufacturer | NPOE |
|---|---|
| Purpose | Crewed spacecraft |
| Launch mass | 2850 kg |
| Dry mass | 2850 kg |
| Length | 7.2 m |
| Diameter | 2.2 m |
| Span | 7.2 m |
| Shape | Sphere + Cone + Cyl |
| Power | Batteries |
| Propulsion | KTDU-35 |
| Equipment | docking system |
Top operators
NPOE 18 TSKBEM 5
Top countries
SU 23
7K-T satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| SOYUZ 40 Soyuz-40 | 12454 | 1981-042A | NPOE | May 14, 1981 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 39 Soyuz-39 | 12366 | 1981-029A | NPOE | Mar 22, 1981 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 38 Soyuz-38 | 11977 | 1980-075A | NPOE | Sep 18, 1980 | 90 min, 51.6° | Reentered | ◉ |
| SOYUZ 37 Soyuz-37 | 11905 | 1980-064A | NPOE | Jul 23, 1980 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 36 Soyuz-36 | 11811 | 1980-041A | NPOE | May 26, 1980 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 35 Soyuz-35 | 11753 | 1980-027A | NPOE | Apr 9, 1980 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 34 Soyuz-34 | 11387 | 1979-049A | NPOE | Jun 6, 1979 | 92 min, 51.6° | Reentered | ◉ |
| SOYUZ 33 Soyuz-33 | 11324 | 1979-029A | NPOE | Apr 10, 1979 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 32 Soyuz-32 | 11281 | 1979-018A | NPOE | Feb 25, 1979 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 31 Soyuz-31 | 11010 | 1978-081A | NPOE | Aug 26, 1978 | 92 min, 51.6° | Reentered | ◉ |
| SOYUZ 29 Soyuz-29 | 10952 | 1978-061A | NPOE | Jun 15, 1978 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 28 Soyuz-28 | 10694 | 1978-023A | NPOE | Mar 2, 1978 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 27 Soyuz-27 | 10560 | 1978-003A | NPOE | Jan 10, 1978 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 26 Soyuz-26 | 10506 | 1977-113A | NPOE | Dec 10, 1977 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 25 Soyuz-25 | 10401 | 1977-099A | NPOE | Oct 9, 1977 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 21 Soyuz-21 | 08934 | 1976-064A | NPOE | Jul 6, 1976 | 90 min, 51.6° | Reentered | ◉ |
| SOYUZ 18 Soyuz-18 | 07818 | 1975-044A | NPOE | May 24, 1975 | 92 min, 51.6° | Reentered | ◉ |
| SOYUZ 17 Soyuz-17 | 07604 | 1975-001A | NPOE | Jan 10, 1975 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 13 Soyuz-13 | 06982 | 1973-103A | TSKBEM | Dec 18, 1973 | 89 min, 51.6° | Reentered | ◉ |
| COSMOS 613 Kosmos-613 | 06957 | 1973-096A | TSKBEM | Nov 30, 1973 | 91 min, 51.6° | Reentered | ◉ |
| SOYUZ 12 Soyuz-12 | 06836 | 1973-067A | TSKBEM | Sep 27, 1973 | 91 min, 51.6° | Reentered | ◉ |
| COSMOS 573 Kosmos-573 | 06694 | 1973-041A | TSKBEM | Jun 15, 1973 | 89 min, 51.6° | Reentered | ◉ |
| COSMOS 496 Kosmos-496 | 06066 | 1972-045A | TSKBEM | Jun 26, 1972 | 89 min, 51.6° | Reentered | ◉ |
Frequently asked questions
How many 7K-T satellites are there?
The catalog lists 23 objects built on the 7K-T bus. 0 are in orbit and 23 have reentered.
How many 7K-T satellites are in orbit?
0 7K-T objects are currently in orbit, of which 0 carry an active status.
Who builds the 7K-T bus?
The 7K-T bus is most commonly built by NPOE.
When did the first 7K-T satellite launch?
The first cataloged 7K-T satellite launched in 1972, and the most recent in 1981.