Home›Maneuver Tracker›Close Approaches›COSMOS 2594 ⟷ FLOCK 4Q 27
HighCross-border
RussiaCOSMOS 2594NORAD 65270 · launched Aug 2025Military payload
6.07kmPredicted miss distance
United StatesFLOCK 4Q 27NORAD 58282 · launched Nov 2023Payload
Final forecastFinal forecast, made 7 min before the pass.
Closest approach13 Nov 202607:40 UTC
Relative speed15.28 km/sat the closest approach
Altitude291 kmlow Earth orbit
Last confirmed13 Nov07:33 UTC · final forecast
Track COSMOS 2594Track FLOCK 4Q 27All approaches
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RU COSMOS 2594 and US FLOCK 4Q 27 were predicted to reach a closest approach of 6.07 km at 2026-11-13 07:40 UTC, at a relative speed of 15.28 km/s. Final forecast, made 7 min before the pass. This is a cross-border encounter between objects of different nations. 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 2594Payload
NORAD 65270
CountryCIS
Launched2025-08-21
OrbitLEO · 283 × 286 km
COSPAR2025-182D
Maneuver capableUnknown
Profile →Globe →
FLOCK 4Q 27Payload
NORAD 58282
CountryUS
Launched2023-11-11
OrbitLEO · 284 × 293 km
COSPAR2023-174AC
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 291 KMISS 420Starlink 550

At 291 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 2594 ⟷ FLOCK 4Q 27
2026-11-13 07:406.07 km Final forecast15.28 km/s291 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
13 Nov 05:33 UTC6.07 km Forecast13 Nov 07:40 UTC12 Nov 12:14 UTCRe-check
12 Nov 19:13 UTC7.19 km Forecast13 Nov 07:40 UTC12 Nov 06:13 UTCRe-check
12 Nov 11:47 UTC6.44 km Forecast13 Nov 07:40 UTC12 Nov 01:41 UTCRe-check
12 Nov 11:28 UTC9.52 km Forecast13 Nov 07:40 UTC12 Nov 01:41 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.62 km11-15 12:13 UTC
COSMOS 2594STARLINK-1394
5.51 km11-12 12:37 UTC
COSMOS 2594ELECTRON KICK STAGE R/B
6.65 km11-09 23:30 UTC
COSMOS 2594STARLINK-3057

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 →