Home›Maneuver Tracker›Close Approaches›HULIANWANG DIGUI 225 ⟷ COSMOS 1275 DEB
HighCross-border
On permanent record
ChinaHULIANWANG DIGUI 225NORAD 101187 · launched Oct 2026Payload
2.74kmPredicted miss distance
RussiaCOSMOS 1275 DEBNORAD 12707 · launched Jun 1981Military debris
Live forecastConfirmed by the latest screening, 11 Nov 15:38 UTC.
Closest approach12 Nov 202608:37 UTC
Relative speed4.76 km/sat the closest approach
Altitude1,078 kmlow Earth orbit
Separation now—live
Track HULIANWANG DIGUI 225Track COSMOS 1275 DEBAll approaches
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CN HULIANWANG DIGUI 225 and RU COSMOS 1275 DEB are predicted to reach a closest approach of 2.74 km at 2026-11-12 08:37 UTC, at a relative speed of 4.76 km/s. Confirmed by the latest screening, 11 Nov 15:38 UTC. This is a cross-border encounter between objects of different nations. 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
HULIANWANG DIGUI 225Payload
NORAD 101187
CountryPRC
Launched2026-10-25
OrbitLEO · 1,071 × 1,073 km
COSPAR2026-243C
Maneuver capableUnknown
Profile →Globe →
COSMOS 1275 DEBDebris
NORAD 12707
CountryCIS
Launched1981-06-04
OrbitLEO · 939 × 1,134 km
COSPAR1981-053BB
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 · 1078 KMISS 420Starlink 550

At 1078 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 · HULIANWANG DIGUI 225 ⟷ COSMOS 1275 DEB
2026-11-12 08:372.74 km Live forecast4.76 km/s1,078 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
11 Nov 11:57 UTC2.74 km Forecast12 Nov 08:37 UTC10 Nov 21:35 UTCRe-check
11 Nov 11:37 UTC3.25 km Forecast12 Nov 08:37 UTC10 Nov 21:35 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.89 km11-05 13:57 UTC
HULIANWANG DIGUI 225QIANFAN-185
3.16 km11-06 06:36 UTC
HULIANWANG DIGUI 225THORAD AGENA D DEB
3.78 km11-12 09:57 UTC
HULIANWANG DIGUI 225QIANFAN-181

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 →

✓ Permanent record. This encounter met the notability thresholds and keeps an archived page after the pass.