|Mission Name:||Soyuz 13|
|Call Sign:||Кавказ (Kavkaz - "Caucasus")|
|Number of Crew Members:||2|
|Launch:||December 18, 1973|
|Landing:||December 26, 1973|
200km SW of Karaganda
|Duration:||7 days, 20 hours, 55 minutes|
|Number of Orbits:||127|
Soyuz 13 was a second test flight of the redesigned Soyuz capsule that first flew as Soyuz 12. This particular spacecraft was further specially modified to carry a large camera for astrophysical observations.
Once again, the new Soyuz variant performed extremely well when on-board systems were tested.