Kosmos 2612 Maneuvers Within 500 Meters of Ukraine-Linked Satellite

A Russian military satellite, Kosmos 2612, closed to within 500 meters of a commercial US-operated imaging satellite over the weekend, according to orbital-tracking company LeoLabs, cited by Ars Technica. The target, ICEYE-X36, is a radar satellite that LeoLabs says the Russian craft had been stalking since shortly after its April launch, and the close pass marks what LeoLabs calls the first known unsanctioned rendezvous between two active satellites in low-Earth orbit.

What did Kosmos 2612 actually do?

LeoLabs, which runs a global radar network capable of tracking objects as small as 2 centimeters in low-Earth orbit, says Kosmos 2612 "conducted a deliberate series of maneuvers toward ICEYE-X36" in recent days. The company's account, relayed by Ars Technica, describes a four-part sequence: a controlled approach, changes in relative position once nearby, close-proximity loitering, and a controlled departure. LeoLabs called the pattern "consistent with sophisticated rendezvous and proximity operations," a term used for deliberate close-in satellite maneuvers rather than the high-speed, incidental passes that happen routinely in orbit.

How close did the two satellites get?

By Friday, Kosmos 2612 was holding station 2 to 3 kilometers from ICEYE-X36 before shifting to positions ahead of and behind the satellite, according to LeoLabs. Over the weekend the gap narrowed further, to within 500 meters (1,640 feet), and "likely quite a bit closer than that," LeoLabs vice president of technical solutions Adam Marsh told Ars Technica. At points, LeoLabs said the proximity made it difficult for its radars to distinguish the two spacecraft independently.

Is ICEYE-X36 actually used by Ukraine?

ICEYE-X36 is one of the radar-imaging satellites in the Finland-based company ICEYE's commercial constellation, built in the US and operated as a US spacecraft, per Ars Technica's reporting. The outlet's headline and framing tie the satellite to Ukraine's use of commercial radar imagery, though the Ars Technica story itself does not detail specific Ukrainian military tasking of ICEYE-X36 beyond identifying it as the target of the Russian maneuvers. U.S. military officials and independent analysts have tracked Kosmos 2612 since its launch on a Soyuz rocket from a spaceport in northern Russia, and at least four of the six satellites launched alongside it adjusted their orbits within weeks to align with ICEYE-X36's path, LeoLabs said.

Why are trackers calling this unusual?

Satellites pass near one another in orbit often, typically by chance and at high closing speeds, and Russia has previously parked satellites close to sensitive US government spy craft. What sets this episode apart, per LeoLabs, is the target: a commercial satellite, not a classified military asset, and the duration of the encounter — Kosmos 2612 lingered near ICEYE-X36 rather than passing through.

"There are parallels that have happened in geosynchronous orbit, but they're not even close to the same as this," Marsh told Ars Technica.

Astrophysicist Jonathan McDowell, who tracks global launch and satellite activity, wrote on X that the event appears to be the first low-Earth-orbit rendezvous between two active satellites where the owner of one did not consent, according to the quote carried in Ars Technica's reporting.

What is the timeline of Kosmos 2612's approach?

• April 2026: Kosmos 2612 launches on a Soyuz rocket from a spaceport in northern Russia alongside five other satellites.
• Weeks after launch: At least four of the six satellites from that launch adjust orbits to line up with ICEYE-X36, according to LeoLabs.
• Last week of monitoring: Kosmos 2612 begins rapidly closing the distance toward ICEYE-X36 after a period of stable separation.
• By Friday: Kosmos 2612 holds station 2 to 3 kilometers away, shifting ahead of and behind the ICEYE satellite.
• Over the weekend: The gap narrows to within 500 meters, with LeoLabs saying the actual distance was likely tighter.
• Following days: Kosmos 2612 begins a controlled departure, according to LeoLabs.

What happens to the satellites now?

As of the Ars Technica report, LeoLabs said Kosmos 2612 had started moving away from ICEYE-X36 after the close pass, describing the exit as a "controlled departure" consistent with the deliberate nature of the approach. Neither LeoLabs nor Ars Technica's reporting indicates that ICEYE-X36 sustained damage or that its operations were disrupted. LeoLabs continues tracking both spacecraft using its radar network, and the company's public characterization of the event as "strategically important" signals that it expects continued scrutiny of Kosmos 2612's future movements near other commercial or government satellites in low-Earth orbit.