Home›Maneuver Tracker›Close Approaches›PROJECT SUNCATCHER M1 ⟷ AC1-001
MediumProximity
United StatesPROJECT SUNCATCHER M1NORAD 100902 · launched Oct 2026Payload
6.99kmPredicted miss distance
United KingdomAC1-001NORAD 66744 · launched Nov 2025Payload
Final forecastFinal forecast, made minutes before the pass.
Closest approach9 Nov 202612:18 UTC
Drift speed224 m/s806 km/h, seen from AC1-001
Altitude519 kmlow Earth orbit
Last confirmed9 Nov12:15 UTC · final forecast
Track PROJECT SUNCATCHER M1Track AC1-001All approaches
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US PROJECT SUNCATCHER M1 and UK AC1-001 were predicted to reach a closest approach of 6.99 km at 2026-11-09 12:18 UTC, drifting past at about 224 m/s (806 km/h) as seen from AC1-001. Final forecast, made minutes 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
PROJECT SUNCATCHER M1Payload
NORAD 100902
CountryUS
Launched2026-10-01
OrbitLEO · 513 × 515 km
COSPAR2026-227V
Maneuver capableUnknown
Profile →Globe →
AC1-001Payload
NORAD 66744
CountryUK
Launched2025-11-28
OrbitLEO · 508 × 511 km
COSPAR2025-276CG
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 519 KMISS 420Starlink 550

At 519 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 · PROJECT SUNCATCHER M1 ⟷ AC1-001
2026-11-09 12:186.99 km Final forecast0.22 km/s519 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
9 Nov 11:35 UTC6.99 km Forecast9 Nov 12:18 UTC9 Nov 06:45 UTCRe-check
9 Nov 06:32 UTC8.15 km Forecast9 Nov 12:18 UTC9 Nov 00:47 UTCRe-check
9 Nov 00:32 UTC8.40 km Forecast9 Nov 12:18 UTC8 Nov 18:47 UTCRe-check
8 Nov 18:32 UTC8.98 km Forecast9 Nov 12:18 UTC8 Nov 12:45 UTCRe-check
8 Nov 12:32 UTC9.31 km Forecast9 Nov 12:18 UTC8 Nov 08:45 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
501 m11-12 09:05 UTC
PROJECT SUNCATCHER M1ELEAF-01
535 m11-12 11:29 UTC
PROJECT SUNCATCHER M1ELEAF-01
656 m11-12 12:13 UTC
PROJECT SUNCATCHER M1ELEAF-01

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 →