Satellite imagery shows Russia pulled rare S-400 launchers from storage to strike Ukraine

TLDR

• An OSINT researcher found S-400 51P6A launchers at Kapustin Yar fell from about 30 in 2022 to 14 by 2025.²
• The roughly 16 missing launchers fit Ukrainian reports that Russia refits S-400 missiles as ballistic ground-attack weapons.³
• Ukrainian Security Service footage appears to confirm the missing launchers were reassigned to fire ballistic missiles.¹²

Satellite imagery analysis of a Russian missile test range is helping explain where Russia found extra launchers for a makeshift ballistic missile it has been firing at Ukraine. An open-source researcher known as AS-22 examined satellite images of the Kapustin Yar range and found that around 30 51P6A launch vehicles for the S-400 air defence system were visible there in 2022, but only 14 remained by 2025.²

Why it matters: that gap of roughly 16 missing launchers lines up with a pattern Ukrainian intelligence has already flagged separately, in which Russia strips old S-400 air-defence missiles down and refits them as ground-attack weapons, called the RM-48U or PM-48U, giving it more ballistic-strike capacity without building new launchers from scratch.³

Driving the news:

• Ukraine's Security Service released footage summarising its September 2026 combat operations, and the clips appear to show the same 51P6A launchers Defense Express had already linked to the Kapustin Yar range in earlier reporting.²
• Defense Express says the clearest way to spot a 51P6A among ordinary S-400 launchers is its chassis: the 51P6A rides on a Belarusian-made MZKT-7930 "Astrolog" platform, while standard S-400 launchers typically use the Russian-built BAZ-64022.²
• The 51P6A launchers near Ukraine have reportedly been moving alone, without the radar vehicles that normally accompany an S-400 air-defence battery, consistent with their use as ground-attack platforms rather than in an air-defence role.²
• Ukraine's Defence Intelligence agency had estimated by late August that Russia had converted up to 17 S-400 launchers specifically for RM-48U strikes.³
• Defence Minister Yevhenii Khmara told reporters at a briefing that Ukraine's Defence Forces destroyed three and damaged five Iskander and S-400 launchers used for ballistic missile strikes during September and early October.¹³
• Khmara said the strikes have already forced Russia to cancel or alter planned ballistic missile attacks, while the ministry works with partners to speed up deliveries of interceptor missiles.³

The big picture: the RM-48U repurposes hardware Russia already had on hand, built around the solid-fuel motor from the S-400's own 48N6DM surface-to-air missile and guided by a jamming-resistant Kometa satellite navigation antenna, giving it a range of up to 400 kilometres and flight speeds of Mach 4 to 6.³ Earlier Ukrainian strikes on three S-400 launchers in Russia's Bryansk region, with photos confirming at least one fully destroyed, show the campaign against these converted launchers predates this latest Kapustin Yar disclosure.³