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Russia Almaz-Antey
S-500 Prometheus
Russia's next-generation strategic air- and missile-defense system, designed to intercept ballistic and hypersonic threats as well as low-orbit satellites. It entered limited service with Russian forces and figures are largely government-claimed estimates.
In service since 2021 · 1 operator countries
Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02
600
km range
200,000
m altitude
10
targets
800
km radar
Pricing: Unit cost not publicly disclosed; figures are Russian government estimates
Procurement snapshot
Availability & export
Russian state channel
Rosoboronexport monopoly; Western sanctions exposure and payment/logistics risk for many buyers.
Channel: Rosoboronexport (state)
Fielded & proven
Limited · 1 operator
In service since 2021. Status: active.
Lifecycle cost (est.)
No public unit price to model from.
Interoperability
No standardised NATO calibre / datalink detected in public specs.
Derived guidance from public data — export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Performance
Speed, range, altitude and engagement capability.
- Max speed (Mach)
Maximum speed as a multiple of the speed of sound. Mach 2+ is typical for air-superiority fighters.
- 16 Mach Top 1% of air-defense systems
- Engagement range
Maximum distance at which an air-defense system can intercept targets. Higher covers more airspace.
- 600 km Top 4% of air-defense systems
- Engagement altitude
Maximum target altitude the system can reach.
- 200,000 m Top 1% of air-defense systems
- Simultaneous targets
Number of targets the system can engage at once. Higher resists saturation attacks.
- 10 Stronger than 65% of air-defense systems
Firepower
Armament, payload and guidance.
- Main armament
Primary weapon: main gun, cannon or missile type.
- 77N6-N/77N6-N1 exo-atmospheric interceptors
- Warhead type
Blast-fragmentation, shaped charge (HEAT), penetrator, thermobaric or nuclear-capable.
- Hit-to-kill / fragmentation
- Guidance
How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire.
- Active radar homing, Inertial + datalink
Sensors & avionics
Radar, sensor suite and datalinks.
- Radar
Primary radar. AESA (active electronically scanned array) is the current state of the art.
- 91N6A(M) acquisition radar
- Radar range
Published detection range against a typical fighter-sized target. Higher sees first.
- 800 km Top 5% of air-defense systems
- Datalink
Network connectivity: Link 16, MADL, national datalinks. Enables cooperative engagement.
- Integrated aerospace defense command network
Program
Cost, production scale and operators.
- Operator countries
Number of countries operating the system. More operators means broader support ecosystem.
- 1 Stronger than 19% of air-defense systems
Specifications compiled from public Almaz-Antey and reference sources ↗. Published defense figures are approximations — treat comparisons as directional. Last verified 2026-07-02.
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What is the engagement range of the Almaz-Antey S-500 Prometheus? +
The Almaz-Antey S-500 Prometheus has a maximum engagement range of 600 km.
What is the main armament of the Almaz-Antey S-500 Prometheus? +
The Almaz-Antey S-500 Prometheus's primary weapon is the 77N6-N/77N6-N1 exo-atmospheric interceptors.
What is the Almaz-Antey S-500 Prometheus used for? +
The Almaz-Antey S-500 Prometheus is a air defense system typically used for air defense.
How many countries operate the Almaz-Antey S-500 Prometheus? +
The Almaz-Antey S-500 Prometheus is operated by 1 countries.
How much does the Almaz-Antey S-500 Prometheus cost? +
Almaz-Antey S-500 Prometheus: Unit cost not publicly disclosed; figures are Russian government estimates. Defense program costs are rarely fully public and vary by contract and configuration.
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