S-500 Prometey
Long-range air and missile defense systemIn serviceFielded 2021Pending verification
Also known as: S-500 Prometheus, 55R6M Triumfator-M
Missile ForcesRUS
Fact cardConfidence · Source
System
TypeLong-range air and missile defense system
Alternative designationsS-500 Prometheus, 55R6M Triumfator-M
Date of introduction2021
ProliferationOrigin country only
Flight performance
Payload and range
Missile Weapon System: targeting & guidance systemsThe S-500 is expected to have a very quick reaction time. The speed of the targets that it is expected to engage would require a target engagement process in the order of a few seconds – certainly below 10 – to be successful.Med[1]
Missile Weapon System: 77n6-n and 77n6-n1The 77N6 series are new missiles designed specifically for the S-500. The capabilities of the missiles are unclear, but the original requirement issued by the Russian MoD specified an intercept height of 200 km and a flight speed up to 7 km/second.Med[1]
Missile Weapon System: 40n6The 40N6 long-range missile was developed for the S-400 medium-range air-defence system, it has a maximum range of 380 km and up to 15 km against ballistic targets operating at altitudes between 10 m and 35 km, according to TASS.Med[1]
Fire control
Command-and Control (C2) SystemRussian authorities and Almaz-Antei have stated that the S-500 will be a completely new system with little commonality with the S-400 but it will be interfaced with the 30K6E…Med[1]
76T6 and 77T6 RadarsPrecise details of these radars are unavailable. They are thought to be active phased-array systems using gallium nitride (GaN) substrate that operate in the X-band, and are used…Med[1]
91N6AM missile Guidance RadarThe 91N6A(M) ‘Big Bird' multifunctional adaptive radar system (MARS) is understood to be an upgraded 91N6 radar of the S-400.Med[1]
96L6 Tracking RadarThe 96L6-TsP ‘Cheese Board' is an upgrade of the 96L6E battery acquisition radar of the S-400.Med[1]
The S-500 Prometheus (Prometey) 10x10 Mobile Surface-to-Air Missile System (SAM) is an advanced medium- to long-range air-defense system designed by Russia's Almaz-Antey.
Draft entry. Values come from the cited public sources and are awaiting editor verification.
- S-500 Prometheus (Prometey) Russian Mobile Surface-to-Air Missile System (SAM), U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)
Published/updated 2026-03-20 · Tier 1 · checked 2026-10-10
- 2026-10-05 Entry created from the Worldwide Equipment Guide (ODIN)
- 2026-10-07 Added photo (CC BY 4.0)