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HighProximity
RussiaCOSMOS 2061NORAD 20527 · launched Mar 1990Military payload
2.66kmPredicted miss distance
RussiaCOSMOS 2100NORAD 20804 · launched Sep 1990Military payload
Final forecastFinal forecast, made minutes before the pass.
Closest approach12 Nov 202607:22 UTC
Drift speed245 m/s881 km/h, seen from COSMOS 2100
Altitude995 kmlow Earth orbit
Last confirmed12 Nov07:18 UTC · final forecast
Track COSMOS 2061Track COSMOS 2100All approaches
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RU COSMOS 2061 and RU COSMOS 2100 were predicted to reach a closest approach of 2.66 km at 2026-11-12 07:22 UTC, drifting past at about 245 m/s (881 km/h) as seen from COSMOS 2100. Final forecast, made minutes 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 2061Payload
NORAD 20527
CountryCIS
Launched1990-03-20
OrbitLEO · 969 × 1,013 km
COSPAR1990-023A
Maneuver capableUnknown
Profile →Globe →
COSMOS 2100Payload
NORAD 20804
CountryCIS
Launched1990-09-14
OrbitLEO · 957 × 1,010 km
COSPAR1990-083A
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 995 KMISS 420Starlink 550

At 995 km this pass sits inside the most congested band in low Earth orbit, home to the debris left by the 2007 ASAT test and the 2009 collision. 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 2061 ⟷ COSMOS 2100
2026-11-12 07:222.66 km Final forecast0.24 km/s995 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
11 Nov 22:18 UTC2.66 km Forecast12 Nov 07:22 UTC11 Nov 08:30 UTCRe-check
11 Nov 10:26 UTC2.65 km Forecast12 Nov 07:22 UTC11 Nov 02:04 UTCRe-check
11 Nov 07:26 UTC2.71 km Forecast12 Nov 07:22 UTC10 Nov 07:51 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
495 m11-13 01:46 UTC
COSMOS 2061COSMOS 971
2.40 km11-08 12:50 UTC
COSMOS 2100COSMOS 1579
3.67 km11-06 02:39 UTC
COSMOS 2061COSMOS 1513

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 →