Home›Maneuver Tracker›Close Approaches›YAOGAN 27 ⟷ ONEWEB-0008
HighProximity
ChinaYAOGAN 27NORAD 40878 · launched Aug 2015Military payload
4.62kmPredicted miss distance
United KingdomONEWEB-0008NORAD 44059 · launched Feb 2019Payload
Final forecastFinal forecast, made 10 min before the pass.
Closest approach10 Nov 202608:22 UTC
Relative speed10.68 km/sat the closest approach
Altitude1,204 kmlow Earth orbit
Last confirmed10 Nov08:11 UTC · final forecast
Track YAOGAN 27Track ONEWEB-0008All approaches
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CN YAOGAN 27 and UK ONEWEB-0008 were predicted to reach a closest approach of 4.62 km at 2026-11-10 08:22 UTC, at a relative speed of 10.68 km/s. Final forecast, made 10 min before the pass. 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 27Payload
NORAD 40878
CountryPRC
Launched2015-08-27
OrbitLEO · 1,194 × 1,206 km
COSPAR2015-040A
Maneuver capableUnknown
Profile →Globe →
ONEWEB-0008Payload
NORAD 44059
CountryUK
Launched2019-02-27
OrbitLEO · 1,196 × 1,199 km
COSPAR2019-010C
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 1204 KMISS 420Starlink 550

At 1204 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 27 ⟷ ONEWEB-0008
2026-11-10 08:224.62 km Final forecast10.68 km/s1,204 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
10 Nov 03:51 UTC4.62 km Forecast10 Nov 08:22 UTC10 Nov 00:20 UTCRe-check
9 Nov 21:51 UTC4.61 km Forecast10 Nov 08:22 UTC9 Nov 15:02 UTCRe-check
9 Nov 18:34 UTC4.80 km Forecast10 Nov 08:22 UTC9 Nov 15:02 UTCRe-check
9 Nov 18:14 UTC4.71 km Forecast10 Nov 08:22 UTC9 Nov 07:17 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.56 km11-14 06:15 UTC
YAOGAN 27ONEWEB-0185
4.60 km11-14 04:44 UTC
YAOGAN 27THORAD DELTA 1 DEB
5.98 km11-07 07:27 UTC
YAOGAN 27ONEWEB-0312

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 →