Home›Maneuver Tracker›Close Approaches›FASTSAT-HSV01 (USA 220) ⟷ KUIPER-00100
HighProximity
United StatesFASTSAT-HSV01 (USA 220)NORAD 37225 · launched Nov 2010Military payload
3.52kmPredicted miss distance
United StatesKUIPER-00100NORAD 65139 · launched Aug 2025Payload
Final forecastFinal forecast, made 17 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 3.62 km at 22 Oct 23:54 UTC.
Closest approach22 Oct 202623:54 UTC
Relative speed2.86 km/sat the closest approach
Altitude629 kmlow Earth orbit
Last confirmed22 Oct23:36 UTC · final forecast
Track FASTSAT-HSV01 (USA 220)Track KUIPER-00100All approaches
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US FASTSAT-HSV01 (USA 220) and US KUIPER-00100 were predicted to reach a closest approach of 3.52 km at 2026-10-22 23:54 UTC, at a relative speed of 2.86 km/s. Final forecast, made 17 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 3.62 km at 22 Oct 23:54 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
FASTSAT-HSV01 (USA 220)Payload
NORAD 37225
CountryUS
Launched2010-11-20
OrbitLEO · 609 × 635 km
COSPAR2010-062D
Maneuver capableUnknown
Profile →Globe →
KUIPER-00100Payload
NORAD 65139
CountryUS
Launched2025-08-11
OrbitLEO · 629 × 630 km
COSPAR2025-171H
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 629 KMISS 420Starlink 550

At 629 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 · FASTSAT-HSV01 (USA 220) ⟷ KUIPER-00100
2026-10-22 23:543.52 km Final forecast2.86 km/s629 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 00:09 UTC3.62 km Best estimate22 Oct 23:54 UTC23 Oct 04:38 UTCBest estimate
22 Oct 22:16 UTC3.52 km Forecast22 Oct 23:54 UTC22 Oct 12:26 UTCRe-check
22 Oct 11:50 UTC3.89 km Forecast22 Oct 23:54 UTC22 Oct 05:59 UTCRe-check
22 Oct 08:04 UTC3.30 km Forecast22 Oct 23:54 UTC21 Oct 21:53 UTCRe-check
22 Oct 02:04 UTC3.32 km Forecast22 Oct 23:54 UTC21 Oct 13:47 UTCRe-check
22 Oct 00:24 UTC3.29 km Forecast22 Oct 23:54 UTC21 Oct 13:29 UTCRe-check
22 Oct 00:04 UTC3.70 km Forecast22 Oct 23:54 UTC21 Oct 13:29 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.91 km10-20 03:14 UTC
FASTSAT-HSV01 (USA 220)TIGRISAT
2.85 km10-22 08:00 UTC
FASTSAT-HSV01 (USA 220)FRG-10D1
3.53 km10-26 10:59 UTC
FASTSAT-HSV01 (USA 220)KUIPER-00050

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 — “FASTSAT-HSV01 (USA 220) ⟷ KUIPER-00100: 3.52 km predicted close approach”, https://orbitalradar.com/conjunction/37225-65139 (accessed 2026-10-26).