Home›Maneuver Tracker›Close Approaches›COSMOS 2273 ⟷ SL-14 R/B
HighProximity
RussiaCOSMOS 2273NORAD 23004 · launched Feb 1994Military payload
4.81kmPredicted miss distance
RussiaSL-14 R/BNORAD 24731 · launched Feb 1997Rocket body
Final forecastFinal forecast, made 15 min before the pass.
Closest approach5 Nov 202605:47 UTC
Relative speed3.23 km/sat the closest approach
Altitude1,405 kmlow Earth orbit
Last confirmed5 Nov05:31 UTC · final forecast
Track COSMOS 2273Track SL-14 R/BAll approaches
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RU COSMOS 2273 and RU SL-14 R/B were predicted to reach a closest approach of 4.81 km at 2026-11-05 05:47 UTC, at a relative speed of 3.23 km/s. Final forecast, made 15 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 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 2273Payload
NORAD 23004
CountryCIS
Launched1994-02-12
OrbitLEO · 1,408 × 1,414 km
COSPAR1994-011F
Maneuver capableUnknown
Profile →Globe →
SL-14 R/BR/B
NORAD 24731
CountryCIS
Launched1997-02-14
OrbitLEO · 1,409 × 1,476 km
COSPAR1997-006G
Maneuver capableNo
Spent rocket stage: uncontrolled, tracked by the public catalogue.
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1405 KMISS 420Starlink 550

At 1405 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 2273 ⟷ SL-14 R/B
2026-11-05 05:474.81 km Final forecast3.23 km/s1,405 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
4 Nov 20:03 UTC4.81 km Forecast5 Nov 05:47 UTC4 Nov 08:54 UTCRe-check
4 Nov 19:44 UTC4.89 km Forecast5 Nov 05:47 UTC4 Nov 08:54 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.24 km11-06 00:45 UTC
COSMOS 2273OPS 6630 (2)
2.88 km11-04 11:27 UTC
COSMOS 2065SL-14 R/B
3.47 km11-04 02:56 UTC
COSMOS 2273GLOBALSTAR M091

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 →