Home›Maneuver Tracker›Close Approaches›YAOGAN 1 ⟷ TIANHUI 5B
HighProximity
ChinaYAOGAN 1NORAD 29092 · launched Apr 2006Military payload
3.05kmPredicted miss distance
ChinaTIANHUI 5BNORAD 58201 · launched Oct 2023Payload
Final forecastFinal forecast, made 14 min before the pass.
Closest approach27 Oct 202620:57 UTC
Relative speed1.61 km/sat the closest approach
Altitude596 kmlow Earth orbit
Last confirmed27 Oct20:43 UTC · final forecast
Track YAOGAN 1Track TIANHUI 5BAll approaches
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CN YAOGAN 1 and CN TIANHUI 5B were predicted to reach a closest approach of 3.05 km at 2026-10-27 20:57 UTC, at a relative speed of 1.61 km/s. Final forecast, made 14 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 1Payload
NORAD 29092
CountryPRC
Launched2006-04-26
OrbitLEO · 603 × 606 km
COSPAR2006-015A
Maneuver capableUnknown
Profile →Globe →
TIANHUI 5BPayload
NORAD 58201
CountryPRC
Launched2023-10-31
OrbitLEO · 604 × 607 km
COSPAR2023-168C
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 596 KMISS 420Starlink 550

At 596 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 · YAOGAN 1 ⟷ TIANHUI 5B
2026-10-27 21:466.82 km Final forecast1.61 km/s614 kmView →
2026-10-27 20:573.05 km Final forecast1.61 km/s596 kmShown above
2026-10-27 20:092.93 km Final forecast1.61 km/s614 kmView →
2026-10-27 19:216.39 km Final forecast1.61 km/s596 kmView →

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
27 Oct 13:00 UTC3.05 km Forecast27 Oct 20:57 UTC27 Oct 07:38 UTCRe-check
27 Oct 09:06 UTC3.00 km Forecast27 Oct 20:57 UTC26 Oct 12:16 UTCRe-check
26 Oct 21:24 UTC2.77 km Forecast27 Oct 20:57 UTC26 Oct 07:26 UTCRe-check
26 Oct 21:04 UTC3.17 km Forecast27 Oct 20:57 UTC26 Oct 07:26 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.60 km10-28 01:56 UTC
YAOGAN 1XINZHENGCHENG 02
2.31 km10-28 01:08 UTC
YAOGAN 1XINZHENGCHENG 02
2.74 km10-27 20:57 UTC
YAOGAN 1TIANHUI 5A

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 1 ⟷ TIANHUI 5B: 3.05 km predicted close approach”, https://orbitalradar.com/conjunction/29092-58201 (accessed 2026-10-28).