 | This November 2022 needs additional citations for verification. (November 2022) |
| UR-100 SS-11 Sego | |
|---|---|
 | |
| Type | ICBM |
| Service history | |
| In service | 21 July 1967 (document №705-235)–1974 |
| Used by | Soviet Union |
| Production history | |
| Manufacturer | design by OKB-52 of V.N.Chelomey, production by Khrunichev Machine-Building Plant, Omsk aviation facility №166 "Polyot", Orenburg aviation facility №47 "Strela" |
| Specifications | |
| Mass | 41.4-42.3 tonnes |
| Length | 16,930 mm |
| Diameter | 2,000 mm |
| Warhead | 1 |
| Blast yield | 1 Mt by NII-1011, Chelyabinsk-70 |
| Engine | two-stage liquid fuel |
Operational range | 10,600 km |
Guidance system | inertial |
| Accuracy | 1000–1400 metres CEP |
The UR-100 (Russian: УР-100) was an intercontinental ballistic missile (ICBM) developed and deployed by the Soviet Union from 1966 to 1996. UR (УР) in its designation stood for Universal Rocket (Russian: Универсальная Ракета). It was known during the Cold War by the NATO reporting name SS-11 Sego and internally by the GRAU index 8K84. The Strela and Rokot carrier rockets were based on it.
The similar designation UR-100MR (Russian: УР-100МР) actually refers to an entirely different missile, the MR-UR-100 Sotka (SS-17 Spanker).