Home›Maneuver Tracker›Close Approaches›RAX (USA 218) ⟷ SHIJIAN 6 05A (SJ-6 05A)
HighCross-border
Final forecastFinal forecast, made 20 min before the pass.
Closest approach12 Nov 202605:38 UTC
Relative speed14.30 km/sat the closest approach
Altitude577 kmlow Earth orbit
Last confirmed12 Nov05:18 UTC · final forecast

US RAX (USA 218) and CN SHIJIAN 6 05A (SJ-6 05A) were predicted to reach a closest approach of 7.49 km at 2026-11-12 05:38 UTC, at a relative speed of 14.30 km/s. Final forecast, made 20 min before the pass. 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 37223
CountryUS
Launched2010-11-20
COSPAR2010-062B
Maneuver capableUnknown
NORAD 49961
CountryPRC
Launched2021-12-10
COSPAR2021-122A
Maneuver capableUnknown

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 577 KMISS 420Starlink 550

At 577 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

4 predicted passes under 10 km
Pair history · RAX (USA 218) ⟷ SHIJIAN 6 05A (SJ-6 05A)
2026-11-12 09:387.64 km Live forecast14.33 km/s553 kmView →
2026-11-12 08:508.74 km Live forecast14.28 km/s577 kmView →
2026-11-12 07:141.13 km Live forecast14.29 km/s577 kmView →
2026-11-12 05:387.49 km Final forecast14.30 km/s577 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
11 Nov 22:38 UTC7.49 km Forecast12 Nov 05:38 UTC11 Nov 14:05 UTCRe-check
11 Nov 22:18 UTC9.38 km Forecast12 Nov 05:38 UTC11 Nov 14:05 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.39 km11-06 05:22 UTC
SHIJIAN 6 05A (SJ-6 05A)NEONSAT-06
3.45 km11-10 07:30 UTC
RAX (USA 218)3CAT-4
4.02 km11-11 09:58 UTC
RAX (USA 218)YAOGAN-30 AD

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 →