Home›Maneuver Tracker›Close Approaches›COSMOS 2115 ⟷ COSMOS 1914
HighProximity
RussiaCOSMOS 2115NORAD 21029 · launched Dec 1990Military payload
4.20kmPredicted miss distance
RussiaCOSMOS 1914NORAD 18793 · launched Jan 1988Military payload
Final forecastFinal forecast, made 10 min before the pass.
Closest approach21 Oct 202623:34 UTC
Drift speed130 m/s468 km/h, seen from COSMOS 1914
Altitude1,416 kmlow Earth orbit
Last confirmed21 Oct23:24 UTC · final forecast
Track COSMOS 2115Track COSMOS 1914All approaches
Share

RU COSMOS 2115 and RU COSMOS 1914 were predicted to reach a closest approach of 4.20 km at 2026-10-21 23:34 UTC, drifting past at about 130 m/s (468 km/h) as seen from COSMOS 1914. Final forecast, made 10 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 2115Payload
NORAD 21029
CountryCIS
Launched1990-12-22
OrbitLEO · 1,406 × 1,411 km
COSPAR1990-114B
Maneuver capableUnknown
Profile →Globe →
COSMOS 1914Payload
NORAD 18793
CountryCIS
Launched1988-01-15
OrbitLEO · 1,382 × 1,410 km
COSPAR1988-002F
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1416 KMISS 420Starlink 550

At 1416 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 2115 ⟷ COSMOS 1914
2026-10-21 23:344.20 km Final forecast0.13 km/s1,416 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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 13:30 UTC4.20 km Forecast21 Oct 23:34 UTC21 Oct 07:52 UTCRe-check
21 Oct 09:46 UTC4.20 km Forecast21 Oct 23:34 UTC21 Oct 00:13 UTCRe-check
21 Oct 03:52 UTC4.19 km Forecast21 Oct 23:34 UTC20 Oct 22:05 UTCRe-check
20 Oct 23:52 UTC4.20 km Forecast21 Oct 23:34 UTC20 Oct 01:32 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.39 km10-21 16:01 UTC
COSMOS 2115THORAD DELTA 1 DEB
3.61 km10-20 19:09 UTC
COSMOS 2167COSMOS 1914
5.58 km10-23 14:18 UTC
COSMOS 2115SL-14 R/B

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 2115 ⟷ COSMOS 1914: 4.20 km predicted close approach”, https://orbitalradar.com/conjunction/18793-21029 (accessed 2026-10-23).