Soyuz TM-20
Soyuz TM-20 was the 20th mission and the 17th long-duration expedition to Mir space station. The mission began on October 3, 1994, 22:42:30 UTC, launching Commander Alexander Viktorenko, Flight Engineer Yelena Kondakova and Research Cosmonaut Ulf Merbold into orbit. They docked with Mir two days later. During their stay there, cosmonauts performed two EVAs, carried out various scientific experiments. Station crew was visited by several Progress resupply spacecrafts, and welcomed aboard the Soyuz TM-21 crew. During this mission the first rendezvous maneuver of the Space Shuttle STS-63 with the Mir space station was performed. The mission concluded with a safe landing back on Earth on March 22, 1995, 04:04:05 UTC.
The Soyuz-U2 was a Soviet, later Russian, carrier rocket. It was derived from the Soyuz-U, and a member of the R-7 family of rockets. It featured increased performance compared with the baseline Soyuz-U, due to the use of syntin propellant, as opposed to RP-1 paraffin, used on the Soyuz-U.
Service provider
Government • RUS
The Roscosmos State Corporation for Space Activities, commonly known as Roscosmos, is the governmental body responsible for the space science program of the Russian Federation and general aerospace research. Soyuz has many launch locations the Russian sites are Baikonur, Plesetsk and Vostochny however Ariane also purchases the vehicle and launches it from French Guiana.
Objects from this launch
2 objects
SATCAT inventory for 1994-063
Last checked: 2026-03-15T00:11:05.471+00:00
Last success: 2026-03-15T00:11:05.471+00:00
Last non-empty: 2026-03-15T00:11:05.471+00:00
Latest snapshot: 2026-03-15T00:11:05.471+00:00
Snapshot hash: b07c84ced77622c346f278ffd66461d21ff17d71f56d27e4b38bc8b02d89576f
LL2 payloads: 0SATCAT payloads: 1Delta: +1RB: 1DEB: 0UNK: 0
Open SATCAT inventory
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SATCAT payload objects
SOYUZ-TM 20
Technical details
Orbit type: LANOrbit center: EALaunch site: TYMSCPeriod: 92.42 minRCS: 17.380 m²
Inc: 51.6°
390 km → 396 km
SATCAT non-payload objects
SL-4 R/B
Technical details
Orbit type: IMPOrbit center: EALaunch site: TYMSCPeriod: 87.43 minRCS: 18.697 m²
Inc: 51.6°
147 km → 148 km