Home›Maneuver Tracker›Close Approaches›COSMOS 2535 ⟷ PERSEUS M2
HighProximity
RussiaCOSMOS 2535NORAD 44421 · launched Jul 2019Military payload
3.13kmPredicted miss distance
RussiaPERSEUS M2NORAD 40037 · launched Jun 2014Payload
Live forecastConfirmed by the latest screening, 25 Oct 22:44 UTC.
Closest approach26 Oct 202619:20 UTC
Relative speed8.57 km/sat the closest approach
Altitude578 kmlow Earth orbit
Separation now—live
Track COSMOS 2535Track PERSEUS M2All approaches
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RU COSMOS 2535 and RU PERSEUS M2 are predicted to reach a closest approach of 3.13 km at 2026-10-26 19:20 UTC, at a relative speed of 8.57 km/s. Confirmed by the latest screening, 25 Oct 22:44 UTC. Miss distance and time of closest approach are computed by propagating the latest published orbital elements for both objects, and each pass is re-checked every 20 minutes as new element sets are published. See the Satellite Maneuver Tracker for the live picture and space situational awareness for context.

Why it mattersBoth objects are catalogued as payloads. Screening continues as new element sets arrive; operators act on their own conjunction data.

The Two Objects

Dossiers from the satellite directory
COSMOS 2535Payload
NORAD 44421
CountryCIS
Launched2019-07-10
OrbitLEO · 585 × 598 km
COSPAR2019-039A
Maneuver capableUnknown
Profile →Globe →
PERSEUS M2Payload
NORAD 40037
CountryCIS
Launched2014-06-19
OrbitLEO · 573 × 587 km
COSPAR2014-033AD
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 578 KMISS 420Starlink 550

At 578 km this pass sits in low Earth orbit. Objects here stay up for decades: there is too little atmospheric drag to clean the band naturally. Why crowded bands matter →

History Between This Pair

1 predicted pass under 10 km
Pair history · COSMOS 2535 ⟷ PERSEUS M2
2026-10-26 19:203.13 km Live forecast8.57 km/s578 kmShown above

Repeat encounters are common for objects in near-intersecting orbital planes. Each pass is re-screened as fresh element sets arrive; "Final forecast" means the screening still predicted it within 45 minutes of its time, "Not re-confirmed" means later screening stopped finding it.

Forecast Record

Every figure published for the pass shown above, newest first. Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.
Computed · figure · predicted time · orbit data · by
25 Oct 20:44 UTC3.13 km Forecast26 Oct 19:20 UTC24 Oct 07:33 UTCRe-check
25 Oct 20:34 UTC7.93 km Forecast26 Oct 19:20 UTC24 Oct 07:33 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.77 km10-23 04:40 UTC
COSMOS 2242PERSEUS M2
3.12 km10-26 00:29 UTC
COSMOS 2535COSMOS 2251 DEB
3.94 km10-20 19:17 UTC
COSMOS 2535LEMUR-2 DELOITTE-2

How These Numbers Are Computed

Miss distance and TCA come from propagating the latest published orbital elements for both objects and searching for the minimum separation over the screening window. Element sets carry kilometre-scale uncertainty, so figures here describe a close pass, not a collision prediction; a change in either object's published elements re-computes the pass automatically. What is a conjunction? → How conjunction assessment works →

Cite this encounter: Orbital Radar — “COSMOS 2535 ⟷ PERSEUS M2: 3.13 km predicted close approach”, https://orbitalradar.com/conjunction/40037-44421 (accessed 2026-10-25).