Home›Maneuver Tracker›Close Approaches›ISS (ZARYA) ⟷ STARLINK-2354
HighCross-border
On permanent record
ForecastForecast made 14 Nov 16:33 UTC.
Closest approach14 Nov 202623:45 UTC
Relative speed9.30 km/sat the closest approach
Altitude430 kmlow Earth orbit
Last confirmed14 Nov16:33 UTC · forecast

RU ISS (ZARYA) and US STARLINK-2354 are predicted to reach a closest approach of 5.90 km at 2026-11-14 23:45 UTC, at a relative speed of 9.30 km/s. Forecast made 14 Nov 16:33 UTC. 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
NORAD 25544
CountryCIS
Launched1998-11-20
COSPAR1998-067A
Maneuver capableYes
International Space Station, debris avoidance maneuvers tracked
NORAD 47894
CountryUS
Launched2021-03-14
COSPAR2021-021AL
Maneuver capableUnknown

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 430 KMISS 420Starlink 550

At 430 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 · ISS (ZARYA) ⟷ STARLINK-2354
2026-11-14 23:455.90 km Forecast9.30 km/s430 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
14 Nov 15:13 UTC5.90 km Forecast14 Nov 23:45 UTC14 Nov 12:00 UTCRe-check
14 Nov 14:53 UTC8.43 km Forecast14 Nov 23:45 UTC14 Nov 12:00 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.11 km11-08 01:28 UTC
ISS (ZARYA)CONNECTA IOT-4
4.47 km11-07 20:29 UTC
ISS (ZARYA)TIANMU-1 05
4.62 km11-11 11:20 UTC
ISS (ZARYA)TIANMU-1 03

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 →

✓ Permanent record. This encounter met the notability thresholds and keeps an archived page after the pass.