Home›Maneuver Tracker›Close Approaches›SHIYAN 30-04 ⟷ CZ-6A DEB
HighProximity
ChinaSHIYAN 30-04NORAD 68140 · launched Mar 2026Military payload
2.94kmPredicted miss distance
ChinaCZ-6A DEBNORAD 54340 · launched Nov 2022Debris
Final forecastFinal forecast, made minutes before the pass.
After the passBest estimate, from the orbit data published nearest its time: 2.93 km at 28 Oct 14:35 UTC.
Closest approach28 Oct 202614:35 UTC
Relative speed13.53 km/sat the closest approach
Altitude588 kmlow Earth orbit
Last confirmed28 Oct14:35 UTC · final forecast
Track SHIYAN 30-04Track CZ-6A DEBAll approaches
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CN SHIYAN 30-04 and CN CZ-6A DEB were predicted to reach a closest approach of 2.94 km at 2026-10-28 14:35 UTC, at a relative speed of 13.53 km/s. Final forecast, made minutes before the pass. Best estimate after the pass, from the orbit data published nearest its time: 2.93 km at 28 Oct 14:35 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 mattersOne side of this pass cannot maneuver, so any avoidance decision rests with the other operator. Screening continues as new element sets arrive.

The Two Objects

Dossiers from the satellite directory
SHIYAN 30-04Payload
NORAD 68140
CountryPRC
Launched2026-03-12
OrbitLEO · 590 × 593 km
COSPAR2026-048B
Maneuver capableUnknown
Profile →Globe →
CZ-6A DEBDebris
NORAD 54340
CountryPRC
Launched2022-11-11
OrbitLEO · 560 × 694 km
COSPAR2022-151CK
Maneuver capableNo
Uncontrolled debris fragment tracked by the public catalogue. About space debris →
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 588 KMISS 420Starlink 550

At 588 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 · SHIYAN 30-04 ⟷ CZ-6A DEB
2026-10-28 14:352.94 km Final forecast13.53 km/s588 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
1 Nov 12:16 UTC2.93 km Best estimate28 Oct 14:35 UTC28 Oct 14:24 UTCBest estimate
28 Oct 11:39 UTC2.94 km Forecast28 Oct 14:35 UTC27 Oct 22:20 UTCRe-check
28 Oct 09:28 UTC2.89 km Forecast28 Oct 14:35 UTC27 Oct 17:31 UTCRe-check
28 Oct 09:09 UTC4.39 km Forecast28 Oct 14:35 UTC27 Oct 17:31 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
873 m10-29 04:23 UTC
SHIYAN 30-04COSMOS 2251 DEB
2.29 km11-03 05:40 UTC
SHIYAN 30-04COSMOS 2251 DEB
2.53 km11-02 12:39 UTC
SHIYAN 30-04REPLICATOR-2

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 →