Home›Maneuver Tracker›Close Approaches›REASON-1 ⟷ OBJECT CJ
HighProximity
United StatesREASON-1NORAD 100903 · launched Oct 2026Payload
2.25kmPredicted miss distance
TBDOBJECT CJNORAD 101096 · launched Oct 2026Payload
Final forecastFinal forecast, made 17 min before the pass.
Closest approach1 Nov 202602:33 UTC
Drift speed2.6 m/s9 km/h, seen from OBJECT CJ
Altitude506 kmlow Earth orbit
Last confirmed1 Nov02:16 UTC · final forecast
Track REASON-1Track OBJECT CJAll approaches
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US REASON-1 and TBD OBJECT CJ were predicted to reach a closest approach of 2.25 km at 2026-11-01 02:33 UTC, drifting past at about 2.6 m/s (9 km/h) as seen from OBJECT CJ. Final forecast, made 17 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
REASON-1Payload
NORAD 100903
CountryUS
Launched2026-10-01
OrbitLEO · 513 × 515 km
COSPAR2026-227W
Maneuver capableUnknown
Profile →Globe →
OBJECT CJPayload
NORAD 101096
CountryTBD
Launched2026-10-01
OrbitLEO · 510 × 517 km
COSPAR2026-227CJ
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 506 KMISS 420Starlink 550

At 506 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 · REASON-1 ⟷ OBJECT CJ
2026-11-01 06:234.09 km Final forecast0.01 km/s523 kmView →
2026-11-01 04:351.67 km Final forecast0.00 km/s522 kmView →
2026-11-01 02:332.25 km Final forecast0.01 km/s506 kmShown above
2026-11-01 00:588.42 km Final forecast0.01 km/s506 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
31 Oct 21:16 UTC2.25 km Forecast1 Nov 02:33 UTC31 Oct 08:39 UTCRe-check
31 Oct 09:16 UTC2.74 km Forecast1 Nov 02:33 UTC30 Oct 23:09 UTCRe-check
31 Oct 02:42 UTC3.17 km Forecast1 Nov 02:33 UTC30 Oct 12:04 UTCRe-check
31 Oct 02:22 UTC4.79 km Forecast1 Nov 02:22 UTC30 Oct 12:04 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.96 km10-28 02:05 UTC
REASON-1STARLINK-3866
2.01 km10-28 20:23 UTC
REASON-1VICTUS HAZE PUMA
3.33 km10-28 00:19 UTC
REASON-1GARAI-A

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 — “REASON-1 ⟷ OBJECT CJ: 2.25 km predicted close approach”, https://orbitalradar.com/conjunction/100903-101096 (accessed 2026-11-01).