Home›Maneuver Tracker›Close Approaches›COSMOS 2128 ⟷ COSMOS 767
MediumProximity
RussiaCOSMOS 2128NORAD 21103 · launched Feb 1991Military payload
6.27kmPredicted miss distance
RussiaCOSMOS 767NORAD 8291 · launched Sep 1975Military payload
Final forecastFinal forecast, made 6 min before the pass.
Closest approach2 Nov 202608:33 UTC
Relative speed10.94 km/sat the closest approach
Altitude1,460 kmlow Earth orbit
Last confirmed2 Nov08:27 UTC · final forecast
Track COSMOS 2128Track COSMOS 767All approaches
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RU COSMOS 2128 and RU COSMOS 767 were predicted to reach a closest approach of 6.27 km at 2026-11-02 08:33 UTC, at a relative speed of 10.94 km/s. Final forecast, made 6 min 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 2128Payload
NORAD 21103
CountryCIS
Launched1991-02-12
OrbitLEO · 1,445 × 1,468 km
COSPAR1991-009D
Maneuver capableUnknown
Profile →Globe →
COSMOS 767Payload
NORAD 8291
CountryCIS
Launched1975-09-17
OrbitLEO · 1,455 × 1,487 km
COSPAR1975-086G
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1460 KMISS 420Starlink 550

At 1460 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 2128 ⟷ COSMOS 767
2026-11-02 08:336.27 km Final forecast10.94 km/s1,460 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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 03:27 UTC6.27 km Forecast2 Nov 08:33 UTC1 Nov 09:55 UTCRe-check
1 Nov 21:47 UTC6.26 km Forecast2 Nov 08:33 UTC1 Nov 03:13 UTCRe-check
1 Nov 21:27 UTC6.56 km Forecast2 Nov 08:33 UTC1 Nov 03:13 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.02 km11-03 03:40 UTC
COSMOS 2128NOAA 2 (ITOS-D)
4.01 km10-29 09:28 UTC
COSMOS 2408COSMOS 767
4.49 km10-30 01:33 UTC
COSMOS 2128COSMOS 1389

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 2128 ⟷ COSMOS 767: 6.27 km predicted close approach”, https://orbitalradar.com/conjunction/21103-8291 (accessed 2026-11-03).