Home›Maneuver Tracker›Close Approaches›COSMOS 2385 ⟷ SL-14 DEB
HighProximity
RussiaCOSMOS 2385NORAD 27056 · launched Dec 2001Military payload
4.39kmPredicted miss distance
RussiaSL-14 DEBNORAD 44575 · launched Jun 1993Debris
Final forecastFinal forecast, made 10 min before the pass.
Closest approach4 Nov 202615:02 UTC
Relative speed12.91 km/sat the closest approach
Altitude1,419 kmlow Earth orbit
Last confirmed4 Nov14:52 UTC · final forecast
Track COSMOS 2385Track SL-14 DEBAll approaches
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RU COSMOS 2385 and RU SL-14 DEB were predicted to reach a closest approach of 4.39 km at 2026-11-04 15:02 UTC, at a relative speed of 12.91 km/s. Final forecast, made 10 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 2385Payload
NORAD 27056
CountryCIS
Launched2001-12-28
OrbitLEO · 1,416 × 1,425 km
COSPAR2001-058B
Maneuver capableUnknown
Profile →Globe →
SL-14 DEBDebris
NORAD 44575
CountryCIS
Launched1993-06-24
OrbitLEO · 1,408 × 1,480 km
COSPAR1993-038H
Maneuver capableNo
Uncontrolled debris fragment tracked by the public catalogue. About space debris →
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1419 KMISS 420Starlink 550

At 1419 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 2385 ⟷ SL-14 DEB
2026-11-04 15:024.39 km Final forecast12.91 km/s1,419 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
4 Nov 09:33 UTC4.39 km Forecast4 Nov 15:02 UTC4 Nov 05:36 UTCRe-check
3 Nov 20:29 UTC4.36 km Forecast4 Nov 15:02 UTC3 Nov 14:10 UTCRe-check
3 Nov 20:05 UTC4.25 km Forecast4 Nov 15:02 UTC2 Nov 21:17 UTCRe-check
3 Nov 19:46 UTC6.44 km Forecast4 Nov 15:02 UTC2 Nov 21:17 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.90 km10-28 20:05 UTC
COSMOS 2385COSMOS 1691 DEB
4.14 km11-02 03:22 UTC
COSMOS 2385COSMOS 1823 DEB
5.34 km11-01 08:12 UTC
COSMOS 1995COSMOS 2385

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 →