Home›Maneuver Tracker›Close Approaches›TIANYI 52 ⟷ OBJECT B
HighProximity
ChinaTIANYI 52NORAD 100742 · launched Sep 2026Payload
1.07kmPredicted miss distance
ChinaOBJECT BNORAD 62726 · launched Jan 2025Payload
Live forecastConfirmed by the latest screening, 25 Oct 16:54 UTC.
Closest approach26 Oct 202609:56 UTC
Relative speed14.76 km/sat the closest approach
Altitude493 kmlow Earth orbit
Separation now—live
Track TIANYI 52Track OBJECT BAll approaches
Share

CN TIANYI 52 and CN OBJECT B are predicted to reach a closest approach of 1.07 km at 2026-10-26 09:56 UTC, at a relative speed of 14.76 km/s. Confirmed by the latest screening, 25 Oct 16:54 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
TIANYI 52Payload
NORAD 100742
CountryPRC
Launched2026-09-17
OrbitLEO · 491 × 497 km
COSPAR2026-215B
Maneuver capableUnknown
Profile →Globe →
OBJECT BPayload
NORAD 62726
CountryPRC
Launched2025-01-17
OrbitLEO · 493 × 505 km
COSPAR2025-012B
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 493 KMISS 420Starlink 550

At 493 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 · TIANYI 52 ⟷ OBJECT B
2026-10-26 09:561.07 km Live forecast14.76 km/s493 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
25 Oct 16:13 UTC1.07 km Forecast26 Oct 09:56 UTC24 Oct 03:35 UTCRe-check
25 Oct 15:52 UTC2.30 km Forecast26 Oct 09:56 UTC24 Oct 03:35 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.60 km10-24 21:51 UTC
YAOGAN-36 05AOBJECT B
3.05 km10-26 02:01 UTC
TIANYI 52ORBASTRO-TR5
3.60 km10-25 19:45 UTC
TIANYI 52IMPULSE-3 MIRA

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 — “TIANYI 52 ⟷ OBJECT B: 1.07 km predicted close approach”, https://orbitalradar.com/conjunction/100742-62726 (accessed 2026-10-25).