Home›Maneuver Tracker›Close Approaches›YAOGAN-34 03 ⟷ KL-ALPHA B
HighProximity
ChinaYAOGAN-34 03NORAD 54249 · launched Nov 2022Military payload
3.58kmPredicted miss distance
GermanyKL-ALPHA BNORAD 44786 · launched Nov 2019Payload
Final forecastFinal forecast, made 14 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 3.61 km at 2 Nov 23:43 UTC.
Closest approach2 Nov 202623:43 UTC
Relative speed7.70 km/sat the closest approach
Altitude1,079 kmlow Earth orbit
Last confirmed2 Nov23:29 UTC · final forecast
Track YAOGAN-34 03Track KL-ALPHA BAll approaches
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CN YAOGAN-34 03 and DE KL-ALPHA B were predicted to reach a closest approach of 3.58 km at 2026-11-02 23:43 UTC, at a relative speed of 7.70 km/s. Final forecast, made 14 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 3.61 km at 2 Nov 23:43 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
YAOGAN-34 03Payload
NORAD 54249
CountryPRC
Launched2022-11-15
OrbitLEO · 1,049 × 1,129 km
COSPAR2022-154A
Maneuver capableUnknown
Profile →Globe →
KL-ALPHA BPayload
NORAD 44786
CountryGER
Launched2019-11-17
OrbitLEO · 1,029 × 1,071 km
COSPAR2019-077B
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1079 KMISS 420Starlink 550

At 1079 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 · YAOGAN-34 03 ⟷ KL-ALPHA B
2026-11-02 23:433.58 km Final forecast7.70 km/s1,079 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
6 Nov 03:55 UTC3.61 km Best estimate2 Nov 23:43 UTC2 Nov 22:14 UTCBest estimate
2 Nov 21:35 UTC3.58 km Forecast2 Nov 23:43 UTC2 Nov 13:23 UTCRe-check
2 Nov 21:23 UTC5.63 km Forecast2 Nov 23:43 UTC2 Nov 04:32 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
4.20 km11-07 10:07 UTC
YAOGAN-34 03FENGYUN 1C DEB
4.25 km11-06 21:33 UTC
YAOGAN-34 03SCOUT A DEB
5.03 km11-05 12:38 UTC
YAOGAN-34 03THOR ABLESTAR DEB

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 →