Home›Maneuver Tracker›Close Approaches›COSMOS 2128 ⟷ BREEZE-KM R/B
MediumProximity
RussiaCOSMOS 2128NORAD 21103 · launched Feb 1991Military payload
6.70kmPredicted miss distance
RussiaBREEZE-KM R/BNORAD 39252 · launched Sep 2013Rocket body
Final forecastFinal forecast, made 20 min before the pass.
Closest approach22 Oct 202603:04 UTC
Relative speed4.57 km/sat the closest approach
Altitude1,456 kmlow Earth orbit
Last confirmed22 Oct02:44 UTC · final forecast
Track COSMOS 2128Track BREEZE-KM R/BAll approaches
Share

RU COSMOS 2128 and RU BREEZE-KM R/B were predicted to reach a closest approach of 6.70 km at 2026-10-22 03:04 UTC, at a relative speed of 4.57 km/s. Final forecast, made 20 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 mattersOne side of this pass cannot maneuver, so any avoidance decision rests with the other operator. Screening continues as new element sets arrive.

The Two Objects

Dossiers from the satellite directory
COSMOS 2128Payload
NORAD 21103
CountryCIS
Launched1991-02-12
OrbitLEO · 1,444 × 1,468 km
COSPAR1991-009D
Maneuver capableUnknown
Profile →Globe →
BREEZE-KM R/BR/B
NORAD 39252
CountryCIS
Launched2013-09-11
OrbitLEO · 1,172 × 1,512 km
COSPAR2013-048D
Maneuver capableNo
Spent rocket stage: uncontrolled, tracked by the public catalogue.
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1456 KMISS 420Starlink 550

At 1456 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 ⟷ BREEZE-KM R/B
2026-10-22 03:046.70 km Final forecast4.57 km/s1,456 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
22 Oct 02:04 UTC6.70 km Forecast22 Oct 03:04 UTC21 Oct 15:14 UTCRe-check
21 Oct 13:30 UTC6.72 km Forecast22 Oct 03:04 UTC21 Oct 07:44 UTCRe-check
21 Oct 09:46 UTC6.71 km Forecast22 Oct 03:04 UTC21 Oct 03:32 UTCRe-check
21 Oct 03:52 UTC6.70 km Forecast22 Oct 03:04 UTC20 Oct 20:28 UTCRe-check
21 Oct 03:32 UTC6.70 km Forecast22 Oct 03:04 UTC20 Oct 07:20 UTCRe-check
21 Oct 03:12 UTC7.01 km Forecast22 Oct 03:04 UTC20 Oct 07:20 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.32 km10-22 19:13 UTC
COSMOS 2128THORAD DELTA 1 DEB
3.01 km10-20 21:19 UTC
COSMOS 2128SL-8 DEB
6.39 km10-21 04:46 UTC
COSMOS 2128SL-14 DEB

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 ⟷ BREEZE-KM R/B: 6.70 km predicted close approach”, https://orbitalradar.com/conjunction/21103-39252 (accessed 2026-10-22).