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HighProximity
RussiaCOSMOS 1994NORAD 19785 · launched Feb 1989Military payload
4.06kmPredicted miss distance
RussiaBREEZE-KM R/BNORAD 39486 · launched Dec 2013Rocket body
Final forecastFinal forecast, made 13 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 4.10 km at 5 Nov 13:40 UTC.
Closest approach5 Nov 202613:40 UTC
Relative speed5.92 km/sat the closest approach
Altitude1,413 kmlow Earth orbit
Last confirmed5 Nov13:27 UTC · final forecast
Track COSMOS 1994Track BREEZE-KM R/BAll approaches
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RU COSMOS 1994 and RU BREEZE-KM R/B were predicted to reach a closest approach of 4.06 km at 2026-11-05 13:40 UTC, at a relative speed of 5.92 km/s. Final forecast, made 13 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 4.10 km at 5 Nov 13:40 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 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 1994Payload
NORAD 19785
CountryCIS
Launched1989-02-10
OrbitLEO · 1,395 × 1,415 km
COSPAR1989-009A
Maneuver capableUnknown
Profile →Globe →
BREEZE-KM R/BR/B
NORAD 39486
CountryCIS
Launched2013-12-25
OrbitLEO · 1,149 × 1,509 km
COSPAR2013-076D
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 · 1413 KMISS 420Starlink 550

At 1413 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 1994 ⟷ BREEZE-KM R/B
2026-11-05 13:404.06 km Final forecast5.92 km/s1,413 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
9 Nov 11:12 UTC4.10 km Best estimate5 Nov 13:40 UTC5 Nov 21:51 UTCBest estimate
5 Nov 09:11 UTC4.06 km Forecast5 Nov 13:40 UTC4 Nov 21:16 UTCRe-check
4 Nov 17:58 UTC4.10 km Forecast5 Nov 13:40 UTC4 Nov 10:03 UTCRe-check
4 Nov 14:12 UTC4.16 km Forecast5 Nov 13:40 UTC4 Nov 04:02 UTCRe-check
4 Nov 13:52 UTC5.14 km Forecast5 Nov 13:40 UTC4 Nov 04:02 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.05 km11-10 10:34 UTC
COSMOS 1994DELTA 1 DEB
3.53 km11-06 08:22 UTC
COSMOS 2270BREEZE-KM R/B
4.39 km11-03 13:11 UTC
COSMOS 1994DELTA 1 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 →