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HighProximity
RussiaCOSMOS 2090NORAD 20735 · launched Aug 1990Military payload
3.36kmPredicted miss distance
RussiaCOSMOS 2247NORAD 22648 · launched May 1993Military payload
Final forecastFinal forecast, made 9 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 3.37 km at 1 Nov 21:36 UTC.
Closest approach1 Nov 202621:36 UTC
Relative speed5.34 km/sat the closest approach
Altitude1,418 kmlow Earth orbit
Last confirmed1 Nov21:27 UTC · final forecast
Track COSMOS 2090Track COSMOS 2247All approaches
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RU COSMOS 2090 and RU COSMOS 2247 were predicted to reach a closest approach of 3.36 km at 2026-11-01 21:36 UTC, at a relative speed of 5.34 km/s. Final forecast, made 9 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 3.37 km at 1 Nov 21:36 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 2090Payload
NORAD 20735
CountryCIS
Launched1990-08-08
OrbitLEO · 1,389 × 1,413 km
COSPAR1990-070A
Maneuver capableUnknown
Profile →Globe →
COSMOS 2247Payload
NORAD 22648
CountryCIS
Launched1993-05-11
OrbitLEO · 1,403 × 1,416 km
COSPAR1993-030C
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1418 KMISS 420Starlink 550

At 1418 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 2090 ⟷ COSMOS 2247
2026-11-01 21:363.36 km Final forecast5.34 km/s1,418 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 21:31 UTC3.37 km Best estimate1 Nov 21:36 UTC2 Nov 02:40 UTCBest estimate
1 Nov 18:48 UTC3.36 km Forecast1 Nov 21:36 UTC1 Nov 05:48 UTCRe-check
1 Nov 17:40 UTC3.35 km Forecast1 Nov 21:36 UTC1 Nov 03:43 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.35 km11-03 19:59 UTC
COSMOS 2090COSMOS 2491 DEB
2.64 km11-04 19:36 UTC
COSMOS 2090GLOBALSTAR M037
3.05 km11-03 09:46 UTC
COSMOS 2247SL-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 →