Home›Maneuver Tracker›Close Approaches›SJ-30C ⟷ GOMX-5
HighProximity
ChinaSJ-30CNORAD 66547 · launched Nov 2025Military payload
2.35kmPredicted miss distance
EuropeGOMX-5NORAD 100946 · launched Oct 2026Payload
Final forecastFinal forecast, made 17 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 2.48 km at 22 Oct 21:10 UTC.
Closest approach22 Oct 202621:10 UTC
Relative speed9.22 km/sat the closest approach
Altitude523 kmlow Earth orbit
Last confirmed22 Oct20:53 UTC · final forecast
Track SJ-30CTrack GOMX-5All approaches
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CN SJ-30C and DEN GOMX-5 were predicted to reach a closest approach of 2.35 km at 2026-10-22 21:10 UTC, at a relative speed of 9.22 km/s. Final forecast, made 17 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 2.48 km at 22 Oct 21:10 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-30CPayload
NORAD 66547
CountryPRC
Launched2025-11-19
OrbitLEO · 515 × 524 km
COSPAR2025-266C
Maneuver capableUnknown
Profile →Globe →
GOMX-5Payload
NORAD 100946
CountryDEN
Launched2026-10-01
OrbitLEO · 507 × 516 km
COSPAR2026-227BR
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 523 KMISS 420Starlink 550

At 523 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-30C ⟷ GOMX-5
2026-10-22 21:102.35 km Final forecast9.22 km/s523 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
24 Oct 21:29 UTC2.48 km Best estimate22 Oct 21:10 UTC22 Oct 23:20 UTCBest estimate
22 Oct 11:50 UTC2.35 km Forecast22 Oct 21:10 UTC22 Oct 05:56 UTCRe-check
22 Oct 08:04 UTC2.45 km Forecast22 Oct 21:10 UTC21 Oct 21:55 UTCRe-check
22 Oct 02:04 UTC2.24 km Forecast22 Oct 21:10 UTC21 Oct 14:00 UTCRe-check
21 Oct 21:44 UTC3.46 km Forecast22 Oct 21:10 UTC21 Oct 07:40 UTCRe-check
21 Oct 21:24 UTC5.27 km Forecast22 Oct 21:10 UTC21 Oct 07:40 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
5.40 km10-20 23:16 UTC
SJ-30COBJECT A
5.57 km10-25 11:49 UTC
SJ-30CS-NET B
5.77 km10-23 06:52 UTC
SJ-30CBLACKJACK ACES-3

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 — “SJ-30C ⟷ GOMX-5: 2.35 km predicted close approach”, https://orbitalradar.com/conjunction/100946-66547 (accessed 2026-10-26).