- Family: Proton / UR-500
- Length: 57 m
- Diameter: 4 m
- Launch Mass: 696 T
The Proton / UR-500 K/D was manufactured by Russian Federal Space Agency (ROSCOSMOS) with the first launch on 1967-03-10. Proton / UR-500 K/D has 24 successful launches and 15 failed launches with a total of 39 launches. This four stage version of the Proton was originally designed to send manned circumlunar spacecraft into translunar trajectory.
