Home›Maneuver Tracker›Close Approaches›COSMOS 2144 ⟷ GLOBALSTAR M083
HighProximity
RussiaCOSMOS 2144NORAD 21300 · launched May 1991Military payload
4.74kmPredicted miss distance
GLOBGLOBALSTAR M083NORAD 37739 · launched Jul 2011Payload
Final forecastFinal forecast, made 15 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 4.77 km at 25 Oct 18:08 UTC.
Closest approach25 Oct 202618:08 UTC
Relative speed9.61 km/sat the closest approach
Altitude1,421 kmlow Earth orbit
Last confirmed25 Oct17:53 UTC · final forecast
Track COSMOS 2144Track GLOBALSTAR M083All approaches
Share

RU COSMOS 2144 and GLOB GLOBALSTAR M083 were predicted to reach a closest approach of 4.74 km at 2026-10-25 18:08 UTC, at a relative speed of 9.61 km/s. Final forecast, made 15 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 4.77 km at 25 Oct 18:08 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 2144Payload
NORAD 21300
CountryCIS
Launched1991-05-16
OrbitLEO · 1,409 × 1,417 km
COSPAR1991-033B
Maneuver capableUnknown
Profile →Globe →
GLOBALSTAR M083Payload
NORAD 37739
CountryGLOB
Launched2011-07-13
OrbitLEO · 1,413 × 1,414 km
COSPAR2011-033A
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1421 KMISS 420Starlink 550

At 1421 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

2 predicted passes under 10 km
Pair history · COSMOS 2144 ⟷ GLOBALSTAR M083
2026-10-25 19:055.39 km Final forecast9.62 km/s1,406 kmView →
2026-10-25 18:084.74 km Final forecast9.61 km/s1,421 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
28 Oct 07:03 UTC4.77 km Best estimate25 Oct 18:08 UTC25 Oct 19:32 UTCBest estimate
25 Oct 11:47 UTC4.74 km Forecast25 Oct 18:08 UTC24 Oct 02:52 UTCRe-check
25 Oct 11:28 UTC9.00 km Forecast25 Oct 18:08 UTC24 Oct 02:52 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
765 m10-25 19:36 UTC
COSMOS 2144GLOBALSTAR M091
1.58 km10-23 19:17 UTC
COSMOS 2144GONETS D1 4
2.33 km10-28 02:07 UTC
COSMOS 2144COSMOS 1618

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 2144 ⟷ GLOBALSTAR M083: 4.74 km predicted close approach”, https://orbitalradar.com/conjunction/21300-37739 (accessed 2026-10-29).