Home›Maneuver Tracker›Close Approaches›COSMOS 2071 ⟷ COSMOS 529
HighProximity
RussiaCOSMOS 2071NORAD 20556 · launched Apr 1990Military payload
3.50kmPredicted miss distance
RussiaCOSMOS 529NORAD 6264 · launched Nov 1972Military payload
Final forecastFinal forecast, made 13 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 3.53 km at 29 Oct 19:04 UTC.
Closest approach29 Oct 202619:04 UTC
Relative speed11.48 km/sat the closest approach
Altitude1,454 kmlow Earth orbit
Last confirmed29 Oct18:51 UTC · final forecast
Track COSMOS 2071Track COSMOS 529All approaches
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RU COSMOS 2071 and RU COSMOS 529 were predicted to reach a closest approach of 3.50 km at 2026-10-29 19:04 UTC, at a relative speed of 11.48 km/s. Final forecast, made 13 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 3.53 km at 29 Oct 19:04 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 2071Payload
NORAD 20556
CountryCIS
Launched1990-04-06
OrbitLEO · 1,458 × 1,463 km
COSPAR1990-029H
Maneuver capableUnknown
Profile →Globe →
COSMOS 529Payload
NORAD 6264
CountryCIS
Launched1972-11-01
OrbitLEO · 1,401 × 1,468 km
COSPAR1972-087B
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1454 KMISS 420Starlink 550

At 1454 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 2071 ⟷ COSMOS 529
2026-10-29 19:043.50 km Final forecast11.48 km/s1,454 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
2 Nov 15:15 UTC3.53 km Best estimate29 Oct 19:04 UTC29 Oct 16:54 UTCBest estimate
29 Oct 09:31 UTC3.50 km Forecast29 Oct 19:04 UTC28 Oct 15:40 UTCRe-check
29 Oct 09:12 UTC8.76 km Forecast29 Oct 19:04 UTC28 Oct 15:40 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
928 m10-28 20:33 UTC
COSMOS 2071DELTA 1 DEB
2.49 km10-27 13:02 UTC
COSMOS 2071EXPLORER 36 (GEOS 2)
3.85 km10-28 01:36 UTC
COSMOS 2071COSMOS 448

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 2071 ⟷ COSMOS 529: 3.50 km predicted close approach”, https://orbitalradar.com/conjunction/20556-6264 (accessed 2026-11-03).