Home›Maneuver Tracker›Close Approaches›COSMOS 2066 ⟷ COSMOS 1476
HighProximity
RussiaCOSMOS 2066NORAD 20551 · launched Apr 1990Military payload
4.99kmPredicted miss distance
RussiaCOSMOS 1476NORAD 14174 · launched Jul 1983Military payload
Final forecastFinal forecast, made 16 min before the pass.
Closest approach21 Oct 202612:42 UTC
Relative speed8.38 km/sat the closest approach
Altitude1,454 kmlow Earth orbit
Last confirmed21 Oct12:26 UTC · final forecast
Track COSMOS 2066Track COSMOS 1476All approaches
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RU COSMOS 2066 and RU COSMOS 1476 were predicted to reach a closest approach of 4.99 km at 2026-10-21 12:42 UTC, at a relative speed of 8.38 km/s. Final forecast, made 16 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 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 2066Payload
NORAD 20551
CountryCIS
Launched1990-04-06
OrbitLEO · 1,385 × 1,463 km
COSPAR1990-029C
Maneuver capableUnknown
Profile →Globe →
COSMOS 1476Payload
NORAD 14174
CountryCIS
Launched1983-07-06
OrbitLEO · 1,445 × 1,463 km
COSPAR1983-069D
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1454 KMISS 420Starlink 550

At 1454 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 2066 ⟷ COSMOS 1476
2026-10-21 12:424.99 km Final forecast8.38 km/s1,454 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
21 Oct 09:46 UTC4.99 km Forecast21 Oct 12:42 UTC21 Oct 03:29 UTCRe-check
21 Oct 03:52 UTC4.98 km Forecast21 Oct 12:42 UTC20 Oct 23:18 UTCRe-check
20 Oct 15:02 UTC4.95 km Forecast21 Oct 12:42 UTC20 Oct 07:28 UTCRe-check
20 Oct 14:44 UTC5.30 km Forecast21 Oct 12:42 UTC20 Oct 07:28 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.41 km10-17 19:08 UTC
COSMOS 2066COSMOS 2071
4.99 km10-22 04:06 UTC
COSMOS 2066DELTA 1 DEB
6.66 km10-24 05:30 UTC
COSMOS 2066COSMOS 1563

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 2066 ⟷ COSMOS 1476: 4.99 km predicted close approach”, https://orbitalradar.com/conjunction/14174-20551 (accessed 2026-10-23).