Home›Maneuver Tracker›Close Approaches›TANAGER-2 ⟷ ION SCV-026
HighProximity
United StatesTANAGER-2NORAD 100886 · launched Oct 2026Payload
3.14kmPredicted miss distance
ItalyION SCV-026NORAD 100917 · launched Oct 2026Payload
Final forecastFinal forecast, made 12 min before the pass.
After the passBest estimate, from the orbit data published nearest its time: within 40 minutes of the predicted time the two stayed at least 2.79 km apart.
Closest approach31 Oct 202616:08 UTC
Drift speed5.4 m/s19 km/h, seen from ION SCV-026
Altitude519 kmlow Earth orbit
Last confirmed31 Oct15:56 UTC · final forecast
Track TANAGER-2Track ION SCV-026All approaches
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US TANAGER-2 and IT ION SCV-026 were predicted to reach a closest approach of 3.14 km at 2026-10-31 16:08 UTC, drifting past at about 5.4 m/s (19 km/h) as seen from ION SCV-026. Final forecast, made 12 min before the pass. Best estimate after the pass, from the orbit data published nearest its time: within 40 minutes of the predicted time the two stayed at least 2.79 km apart. 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
TANAGER-2Payload
NORAD 100886
CountryUS
Launched2026-10-01
OrbitLEO · 506 × 509 km
COSPAR2026-227D
Maneuver capableUnknown
Profile →Globe →
ION SCV-026Payload
NORAD 100917
CountryIT
Launched2026-10-01
OrbitLEO · 510 × 514 km
COSPAR2026-227AL
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

3 predicted passes under 10 km
Pair history · TANAGER-2 ⟷ ION SCV-026
2026-10-31 16:567.94 km Final forecast0.01 km/s503 kmView →
2026-10-31 16:083.14 km Final forecast0.00 km/s519 kmShown above
2026-10-31 14:551.56 km Withdrawn0.00 km/s510 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
4 Nov 04:44 UTC2.79 km Best estimate31 Oct 16:49 UTC31 Oct 23:40 UTCBest estimate
31 Oct 15:16 UTC3.14 km Forecast31 Oct 16:08 UTC31 Oct 11:36 UTCRe-check
31 Oct 09:16 UTC2.74 km Forecast31 Oct 16:12 UTC31 Oct 04:45 UTCRe-check
30 Oct 15:52 UTC3.83 km Forecast31 Oct 15:54 UTC30 Oct 05:05 UTCRe-check
30 Oct 15:32 UTC9.29 km Forecast31 Oct 15:32 UTC30 Oct 05:05 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
3.15 km11-01 09:58 UTC
TANAGER-2MIKROGLOB-2
3.21 km10-31 07:23 UTC
TANAGER-2OPTISAT
3.30 km11-03 22:35 UTC
TANAGER-2CAS500-2

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 →