Home›Maneuver Tracker›Close Approaches›SJ-30A ⟷ ICEYE-X47
HighProximity
ChinaSJ-30ANORAD 66545 · launched Nov 2025Military payload
4.14kmPredicted miss distance
EuropeICEYE-X47NORAD 62389 · launched Dec 2024Payload
Final forecastFinal forecast, made 17 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 4.33 km at 31 Oct 15:54 UTC.
Closest approach31 Oct 202615:54 UTC
Relative speed7.89 km/sat the closest approach
Altitude524 kmlow Earth orbit
Last confirmed31 Oct15:36 UTC · final forecast
Track SJ-30ATrack ICEYE-X47All approaches
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CN SJ-30A and FIN ICEYE-X47 were predicted to reach a closest approach of 4.14 km at 2026-10-31 15:54 UTC, at a relative speed of 7.89 km/s. Final forecast, made 17 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 4.33 km at 31 Oct 15:54 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
SJ-30APayload
NORAD 66545
CountryPRC
Launched2025-11-19
OrbitLEO · 515 × 525 km
COSPAR2025-266A
Maneuver capableUnknown
Profile →Globe →
ICEYE-X47Payload
NORAD 62389
CountryFIN
Launched2024-12-21
OrbitLEO · 521 × 525 km
COSPAR2024-247N
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 524 KMISS 420Starlink 550

At 524 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 · SJ-30A ⟷ ICEYE-X47
2026-10-31 15:544.14 km Final forecast7.89 km/s524 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 04:24 UTC4.33 km Best estimate31 Oct 15:54 UTC31 Oct 22:27 UTCBest estimate
31 Oct 09:16 UTC4.14 km Forecast31 Oct 15:54 UTC31 Oct 00:00 UTCRe-check
31 Oct 08:58 UTC9.44 km Forecast31 Oct 15:54 UTC30 Oct 13:13 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.28 km11-04 04:20 UTC
SJ-30AGUANGCHUAN 01
1.47 km11-04 05:18 UTC
SJ-30AOSSIED
2.29 km11-04 15:36 UTC
SJ-30AOBJECT D

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 →