Soyuz 39

USSR

International Flight nº: 79

Earth orbit Flight nº: 76

USSR launch Flight nº: 48

Interkosmos-8 flight

Launch & orbit data:

Designation	12366 / 81029A
Launch date - time	22 Mar 1981 - 14:58:55 UT
Launch site	Baikonur, LC31
Launch vehicle	Soyuz 11A511U
OKB name - S/N°	Soyuz 7K-T s/n 55
Basic shape	Sphere-cylinder + 2 wings
Dimension (m)	7.5 long, 2.3 to 2.72 dia
Mass (kg)	6800? kg
Flight Crew (EP-11)	Dzhanibekov, Vladimir A. (CDR) Gurragcha, Jugderdemidiyn (CR)
Call Sign	Pamir (Pamir M.)
Backup crew	Lyakhov V., Ganzorig M.
Earth orbit on Mar 22.8:
- Perigee / Apogee	195 x 261 km
- Eccentricity	0.005
- Inclination	51.68°
- Period	89.00 min

Docking & landing data:

Docking date - time	23 Mar 1981 - 16:28 UT
Target spacecraft/port	Salyut 6/Fwd
Undocking date - time	30 Mar 1981 - 08:15 UT
Landing date - time	30 Mar 1981 - 11:40:58 UT
Landing location	46° N, 69° E
Flight Duration (d:hr:min)	07d 20h 42m 03s (7.87 days)
Nbr orbits	124

Flight Crew

Nr.	Surname	Given name	Job	Duration
1	Dzhanibekov	Vladimir Aleksandrovich	Commander	7d 20h 42m
2	Gurragcha	Jugderdemidin	Research cosm. - Mongolia	7d 20h 42m

Backup Crew: Ganzorig & Lyakhov.

Soyuz 39 crew: Dzhanibekov and Mongool cosmonaut Gurragcha (right)

Mission details

Launch from Baikonur; landing 170 km southeast of Dzheskasgan; eighth Intercosmos-mission; docking on Salyut 6; experiments of earth science.
Manned two crew. Transported to the Salyut-6 orbital station the eighth international crew under the INTERCOSMOS programme, comprising V A Dzhanibekov (USSR) and Z. Gurragchi (Mongolian People's Republic) to conduct scientific investigations and experiments.
Soyuz 39 docked with Soyuz-T 4 - Salyut 6 (2nd airlock) on 1981 Mar 23.69. (Progress 12 had vacated 2nd airlock on 1981 Mar 19.76). Undocked March 30, 1981 11:42 GMT.

Astrophilately covers:

Launch cancel Baikonur, send registrated and signed by crew: Dzhanibekov and Gurragcha (Mongolia).

Cosmic Mail: Cover on board of Salyut 6, with new smal five-side Salyut boardcancel and Russian docking cancel 230381, signed by Dzhanibekov, Gurragcha, Kovalyonok and Savinykh.

Cosmic Mail: Cover on board of Salyut 6, with five-side Salyut boardcancel and Mongolian boardcancel 81.03.26, signed by Dzhanibekov and Gurragcha. Credit: #409

Cosmic Mail: Cover on board of Salyut 6, with five-side Salyut boardcancel and Mongolian boardcancel 81.03.28, signed by Dzhanibekov and Gurragcha.

Cosmic Mail: Cover on board of Salyut 6, with five-side Salyut boardcancel, Baikonur cancels 22-381 and 30-381.

Cover with Mongolian boardcancel 81.03.26 and docking boardcancel 230381.

Ref.: #1, #2, #4, #7, #8, #16, #125, #206, #210, #305, #409 - update: 03.09.25

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