Official name SL-4 R/B
Alternative name Blok-I (Soyuz-U)
Cospar ID 1981-066B
Norad ID 12589
Launch date 1981-07-15
Launch site TTMTR
Launch vehicle Soyuz-U
RCS size UNKNOWN
Decay date 1981-07-19
Shape Cyl
Mass (kg) 2378.59
Diameter (m) 2.66
Height (m) 6.7
Span (m^2) 6.7