📊 Analysis
Statistics & insights on rockets and organizations — technology, history, numbers.
Proton / UR-500 K/D
RetiredRussian Federal Space Agency (ROSCOSMOS)
This four stage version of the Proton was originally designed to send manned circumlunar spacecraft into translunar trajectory.
Key figures
Total launches
39
Successes
24
Failures
15
Success rate
61.5 %
Success streak
14
Maiden flight
Mar 10, 1967
Reusable
No
Shortest launch interval ⓘ
3d 23h
Planned launches
0
Proton / UR-500 family total
430 launches · 384 successes · 46 failures (15 variants)
🧐 Data check
Automatic plausibility checks — anomalies are surfaced transparently here:
- ℹ️The figures above apply only to the “Proton / UR-500 K/D” variant. The Launch Library counts each variant separately — the Proton / UR-500 family totals 430 launches across 15 variants.
Technology
Length
57 m
Diameter
4 m
Launch mass
696 t
Liftoff thrust
8,847 kN
Stages
4
Engines & propellant
| 1st stage | 6× RD-275M | UDMH / Stickstofftetroxid |
| 2nd stage | 3× RD-0210 + 1× RD-0211 | UDMH / Stickstofftetroxid |
| 3rd stage | RD-0213/0214, Briz-M (optional) | UDMH / Stickstofftetroxid |
Engine and propellant data from curated sources: Wikipedia — Proton
Launches per year
of which in our database: 39
Successes Failures Other/planned
History & events
Sources
- Launch Library 2 (The Space Devs)
- Wikipedia