Home›Maneuver Tracker›Close Approaches›IMPULSE-4 MIRA ⟷ ELECTRON KICK STAGE R/B
HighProximity
United StatesIMPULSE-4 MIRANORAD 101115 · launched Oct 2026Payload
4.44kmPredicted miss distance
United StatesELECTRON KICK STAGE R/BNORAD 53354 · launched Aug 2022Rocket body
Final forecastFinal forecast, made 16 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: 3.25 km at 6 Nov 14:46 UTC.
Closest approach6 Nov 202614:46 UTC
Relative speed11.51 km/sat the closest approach
Altitude590 kmlow Earth orbit
Last confirmed6 Nov14:30 UTC · final forecast
Track IMPULSE-4 MIRATrack ELECTRON KICK STAGE R/BAll approaches
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US IMPULSE-4 MIRA and US ELECTRON KICK STAGE R/B were predicted to reach a closest approach of 4.44 km at 2026-11-06 14:46 UTC, at a relative speed of 11.51 km/s. Final forecast, made 16 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: 3.25 km at 6 Nov 14:46 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 mattersOne side of this pass cannot maneuver, so any avoidance decision rests with the other operator. Screening continues as new element sets arrive.

The Two Objects

Dossiers from the satellite directory
IMPULSE-4 MIRAPayload
NORAD 101115
CountryUS
Launched2026-10-20
OrbitLEO · 584 × 593 km
COSPAR2026-237E
Maneuver capableUnknown
Profile →Globe →
ELECTRON KICK STAGE R/BR/B
NORAD 53354
CountryUS
Launched2022-08-04
OrbitLEO · 583 × 592 km
COSPAR2022-091C
Maneuver capableNo
Spent rocket stage: uncontrolled, tracked by the public catalogue.
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 590 KMISS 420Starlink 550

At 590 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

3 predicted passes under 10 km
Pair history · IMPULSE-4 MIRA ⟷ ELECTRON KICK STAGE R/B
2026-11-06 17:116.70 km Final forecast · after: 8.21 km11.50 km/s586 kmView →
2026-11-06 15:342.37 km Final forecast · after: 1.31 km11.51 km/s586 kmView →
2026-11-06 14:464.44 km Final forecast · after: 3.25 km11.51 km/s590 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
10 Nov 12:13 UTC3.25 km Best estimate6 Nov 14:46 UTC6 Nov 18:11 UTCBest estimate
6 Nov 10:20 UTC4.44 km Forecast6 Nov 14:46 UTC5 Nov 22:54 UTCRe-check
6 Nov 10:00 UTC5.46 km Forecast6 Nov 14:46 UTC5 Nov 22:54 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
2.87 km11-07 06:22 UTC
IMPULSE-4 MIRAYAM-16
3.45 km11-11 02:47 UTC
IMPULSE-4 MIRAION SCV-012
3.75 km11-12 21:04 UTC
IMPULSE-4 MIRAHJ-1B

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 →