📊 Analysis
Statistics & insights on rockets and organizations — technology, history, numbers.
UR-500
RetiredKhrunichev State Research and Production Space Center
Proton is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965.
Key figures
Total launches
4
Successes
3
Failures
1
Success rate
75.0 %
Success streak
1
Maiden flight
Jul 16, 1965
Reusable
No
Shortest launch interval ⓘ
103d 22h
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 “UR-500” variant. The Launch Library counts each variant separately — the Proton / UR-500 family totals 430 launches across 15 variants.
Technology
Length
46.28 m
Diameter
4.15 m
Launch mass
595 t
Liftoff thrust
8,847 kN
Stages
2
LEO (low Earth orbit)
8,400 kg
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: 4
Successes Failures Other/planned
History & events
Sources
- Launch Library 2 (The Space Devs)
- Wikipedia