Home›Maneuver Tracker›Close Approaches›OBJECT B ⟷ STARLINK-3624
HighCross-border
On permanent record
Live forecastConfirmed by the latest screening, 13 Nov 00:34 UTC.
Closest approach13 Nov 202610:37 UTC
Relative speed9.04 km/sat the closest approach
Altitude521 kmlow Earth orbit
Separation now—live

CN OBJECT B and US STARLINK-3624 are predicted to reach a closest approach of 4.59 km at 2026-11-13 10:37 UTC, at a relative speed of 9.04 km/s. Confirmed by the latest screening, 13 Nov 00:34 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 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
OBJECT BPayload
NORAD 101284
CountryPRC
Launched2026-11-05
COSPAR2026-249B
Maneuver capableUnknown
NORAD 51773
CountryUS
Launched2022-02-25
COSPAR2022-017F
Maneuver capableUnknown

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 521 KMISS 420Starlink 550

At 521 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 · OBJECT B ⟷ STARLINK-3624
2026-11-13 10:374.59 km Live forecast9.04 km/s521 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
12 Nov 23:01 UTC4.59 km Forecast13 Nov 10:37 UTC12 Nov 14:55 UTCRe-check
12 Nov 19:13 UTC6.63 km Forecast13 Nov 10:37 UTC12 Nov 12:25 UTCRe-check
12 Nov 18:54 UTC5.98 km Forecast13 Nov 10:37 UTC12 Nov 12:25 UTCRe-check
12 Nov 18:49 UTC9.15 km Forecast13 Nov 10:37 UTC12 Nov 12:25 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
651 m11-10 02:36 UTC
OBJECT BCZ-4C DEB
2.06 km11-12 09:58 UTC
PIESAT-2 16STARLINK-3624
2.13 km11-12 05:16 UTC
OBJECT BPAZ

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.