Home›Maneuver Tracker›Close Approaches›YAOGAN 10 ⟷ OSCAR 36 (UOSAT 12)
HighProximity
ChinaYAOGAN 10NORAD 36834 · launched Aug 2010Military payload
3.32kmPredicted miss distance
United KingdomOSCAR 36 (UOSAT 12)NORAD 25693 · launched Apr 1999Payload
Final forecastFinal forecast, made 11 min before the pass.
Closest approach31 Oct 202609:27 UTC
Relative speed5.80 km/sat the closest approach
Altitude620 kmlow Earth orbit
Last confirmed31 Oct09:16 UTC · final forecast
Track YAOGAN 10Track OSCAR 36 (UOSAT 12)All approaches
Share

CN YAOGAN 10 and UK OSCAR 36 (UOSAT 12) were predicted to reach a closest approach of 3.32 km at 2026-10-31 09:27 UTC, at a relative speed of 5.80 km/s. Final forecast, made 11 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 10Payload
NORAD 36834
CountryPRC
Launched2010-08-09
OrbitLEO · 610 × 613 km
COSPAR2010-038A
Maneuver capableUnknown
Profile →Globe →
OSCAR 36 (UOSAT 12)Payload
NORAD 25693
CountryUK
Launched1999-04-21
OrbitLEO · 606 × 625 km
COSPAR1999-021A
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 620 KMISS 420Starlink 550

At 620 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 10 ⟷ OSCAR 36 (UOSAT 12)
2026-10-31 09:273.32 km Final forecast5.80 km/s620 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
31 Oct 09:16 UTC3.32 km Forecast31 Oct 09:27 UTC31 Oct 05:07 UTCRe-check
30 Oct 21:09 UTC3.41 km Forecast31 Oct 09:27 UTC30 Oct 14:40 UTCRe-check
30 Oct 09:51 UTC3.38 km Forecast31 Oct 09:27 UTC29 Oct 23:50 UTCRe-check
30 Oct 09:31 UTC6.16 km Forecast31 Oct 09:27 UTC29 Oct 23:50 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
862 m10-31 08:43 UTC
YAOGAN 10GEESAT 5-06
2.46 km10-26 20:07 UTC
YAOGAN 10WORLDVIEW 3
2.90 km10-31 14:03 UTC
YAOGAN 10CZ-6A 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 →

Cite this encounter: Orbital Radar — “YAOGAN 10 ⟷ OSCAR 36 (UOSAT 12): 3.32 km predicted close approach”, https://orbitalradar.com/conjunction/25693-36834 (accessed 2026-11-02).