Home›Maneuver Tracker›Close Approaches›FAST 1 (USA 222) ⟷ FAST 2 (USA 228)
HighProximity
United StatesFAST 1 (USA 222)NORAD 37227 · launched Nov 2010Military payload
2.54kmPredicted miss distance
United StatesFAST 2 (USA 228)NORAD 37380 · launched Nov 2010Military payload
Final forecastFinal forecast, made 16 min before the pass.
Closest approach30 Oct 202611:27 UTC
Relative speed1.25 km/sat the closest approach
Altitude614 kmlow Earth orbit
Last confirmed30 Oct11:11 UTC · final forecast
Track FAST 1 (USA 222)Track FAST 2 (USA 228)All approaches
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US FAST 1 (USA 222) and US FAST 2 (USA 228) were predicted to reach a closest approach of 2.54 km at 2026-10-30 11:27 UTC, at a relative speed of 1.25 km/s. Final forecast, made 16 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
FAST 1 (USA 222)Payload
NORAD 37227
CountryUS
Launched2010-11-20
OrbitLEO · 601 × 624 km
COSPAR2010-062F
Maneuver capableUnknown
Profile →Globe →
FAST 2 (USA 228)Payload
NORAD 37380
CountryUS
Launched2010-11-20
OrbitLEO · 602 × 626 km
COSPAR2010-062M
Maneuver capableUnknown
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 614 KMISS 420Starlink 550

At 614 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

2 predicted passes under 10 km
Pair history · FAST 1 (USA 222) ⟷ FAST 2 (USA 228)
2026-10-30 12:167.54 km Final forecast1.25 km/s612 kmView →
2026-10-30 11:272.54 km Final forecast1.25 km/s614 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
30 Oct 09:31 UTC2.54 km Forecast30 Oct 11:27 UTC29 Oct 10:48 UTCRe-check
29 Oct 21:31 UTC2.55 km Forecast30 Oct 11:27 UTC29 Oct 02:43 UTCRe-check
29 Oct 11:51 UTC2.55 km Forecast30 Oct 11:27 UTC28 Oct 10:33 UTCRe-check
29 Oct 11:31 UTC2.65 km Forecast30 Oct 11:27 UTC28 Oct 10:33 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
82 m10-29 20:19 UTC
FAST 2 (USA 228)FALCON EYE 2
1.69 km10-28 01:05 UTC
FAST 2 (USA 228)KUIPER-00562
2.77 km10-24 16:04 UTC
FAST 2 (USA 228)SCOUT B-1 R/B

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 — “FAST 1 (USA 222) ⟷ FAST 2 (USA 228): 2.54 km predicted close approach”, https://orbitalradar.com/conjunction/37227-37380 (accessed 2026-10-30).