Home›Maneuver Tracker›Close Approaches›COSMOS 2439 ⟷ COSMOS 795
MediumProximity
RussiaCOSMOS 2439NORAD 32956 · launched May 2008Military payload
7.59kmPredicted miss distance
RussiaCOSMOS 795NORAD 8611 · launched Jan 1976Military payload
Final forecastFinal forecast, made minutes before the pass.
Closest approach21 Oct 202617:14 UTC
Relative speed11.38 km/sat the closest approach
Altitude1,484 kmlow Earth orbit
Last confirmed21 Oct17:10 UTC · final forecast
Track COSMOS 2439Track COSMOS 795All approaches
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RU COSMOS 2439 and RU COSMOS 795 were predicted to reach a closest approach of 7.59 km at 2026-10-21 17:14 UTC, at a relative speed of 11.38 km/s. Final forecast, made minutes before the pass. 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 2439Payload
NORAD 32956
CountryCIS
Launched2008-05-23
OrbitLEO · 1,476 × 1,511 km
COSPAR2008-025D
Maneuver capableUnknown
Profile →Globe →
COSMOS 795Payload
NORAD 8611
CountryCIS
Launched1976-01-28
OrbitLEO · 1,466 × 1,498 km
COSPAR1976-008E
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1484 KMISS 420Starlink 550

At 1484 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 2439 ⟷ COSMOS 795
2026-10-21 17:147.59 km Final forecast11.38 km/s1,484 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
21 Oct 16:30 UTC7.59 km Forecast21 Oct 17:14 UTC21 Oct 07:00 UTCRe-check
21 Oct 16:10 UTC8.61 km Forecast21 Oct 17:14 UTC21 Oct 07:00 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
5.55 km10-22 13:20 UTC
COSMOS 2439COSMOS 1823 DEB
6.98 km10-22 14:16 UTC
COSMOS 2439THOR ABLESTAR DEB
8.87 km10-18 16:08 UTC
COSMOS 2587COSMOS 795

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 2439 ⟷ COSMOS 795: 7.59 km predicted close approach”, https://orbitalradar.com/conjunction/32956-8611 (accessed 2026-10-21).