Home›Maneuver Tracker›Close Approaches›COSMOS 2463 ⟷ COSMOS 1275 DEB
HighProximity
RussiaCOSMOS 2463NORAD 36519 · launched Apr 2010Military payload
1.20kmPredicted miss distance
RussiaCOSMOS 1275 DEBNORAD 42228 · launched Jun 1981Military debris
Final forecastFinal forecast, made minutes before the pass.
Closest approach2 Nov 202611:57 UTC
Relative speed8.27 km/sat the closest approach
Altitude960 kmlow Earth orbit
Last confirmed2 Nov11:55 UTC · final forecast
Track COSMOS 2463Track COSMOS 1275 DEBAll approaches
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RU COSMOS 2463 and RU COSMOS 1275 DEB were predicted to reach a closest approach of 1.20 km at 2026-11-02 11:57 UTC, at a relative speed of 8.27 km/s. 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 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 2463Payload
NORAD 36519
CountryCIS
Launched2010-04-27
OrbitLEO · 966 × 1,021 km
COSPAR2010-017A
Maneuver capableUnknown
Profile →Globe →
COSMOS 1275 DEBDebris
NORAD 42228
CountryCIS
Launched1981-06-04
OrbitLEO · 925 × 983 km
COSPAR1981-053UU
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 · 960 KMISS 420Starlink 550

At 960 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 2463 ⟷ COSMOS 1275 DEB
2026-11-02 11:571.20 km Final forecast8.27 km/s960 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
2 Nov 09:14 UTC1.20 km Forecast2 Nov 11:57 UTC1 Nov 19:50 UTCRe-check
2 Nov 03:27 UTC1.27 km Forecast2 Nov 11:57 UTC1 Nov 08:22 UTCRe-check
1 Nov 19:27 UTC1.27 km Forecast2 Nov 11:57 UTC1 Nov 02:52 UTCRe-check
1 Nov 19:07 UTC2.57 km Forecast2 Nov 11:57 UTC1 Nov 02:52 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.86 km10-29 01:11 UTC
COSMOS 2378COSMOS 2463
5.24 km10-28 07:37 UTC
COSMOS 2463THORAD AGENA D DEB
5.50 km11-02 19:42 UTC
COSMOS 2463COSMOS 970 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 →

Cite this encounter: Orbital Radar — “COSMOS 2463 ⟷ COSMOS 1275 DEB: 1.20 km predicted close approach”, https://orbitalradar.com/conjunction/36519-42228 (accessed 2026-11-02).