Soyuz 12

Designation	06836 / 73067A
Launch date - time	27 Sep 1973 - 12:18:16 UT
Launch site	Baikonur, LC1
Launch vehicle	Soyuz 11A511
OKB name - S/nº	Soyuz 7K-T s/n 37
Basic shape	Sphere-cylinder
Dimension (m)	7.5 long, 2.2 dia
Mass (kg)	6720 kg
Flight Crew	Lazarev, Vasili G. (CDR) Makarov, Oleg G. (FE)
Call Sign	Ural (Ural Mountains)
Backup crew	Gubarev A., Grechko G.
Earth orbit on Sep 27.6:
- Perigee / Apogee	181 x 229 km
- Eccentricity	0.004
- Inclination	51.58°
- Period	88.54 min
Landing date - time	29 Sep 1973 - 11:33:48 UT
Landing location	46°N, 70°E 400 km SW of Karaganda
Flight Duration (d:u:min)	01d 23h 15m 32s (1.97 days)
Nbr orbits	31

Backup Crew: Grechko, Gubarev.
Support Crew: Klimuk, Sevastyanov.

Experimental flight for the purpose of further development of manned space craft Soyuz 7K-T modifications.
After the Soyuz 11 disaster, the Soyuz underwent redesign for increased reliability. Two solo test flights of the new design were planned. Crews for the first flight were those already planned for the deferred follow-on missions to the failed DOS 2 and DOS 3 space stations.
Cosmonauts wears again spacesuit during launch and landing; spectroscopical Earth observations.

Launch cancel Panevezio.

Launch cancel Baikonur-Karaganda. Credit: #410

Launch cancel Moscou.

Landing cancel Moscou.

FDC Moscou, signed by Lazarev & Makarov.

Ref.: #1,#2, #7, #8, #16, #125, #206, #210, #410 - update: 17.02.19