Home›Maneuver Tracker›Close Approaches›SDA-NG-T1TL-414 ⟷ THOR ABLESTAR DEB
HighProximity
United StatesSDA-NG-T1TL-414NORAD 100996 · launched Oct 2026Payload
2.05kmPredicted miss distance
United StatesTHOR ABLESTAR DEBNORAD 414 · launched Jun 1961Debris
Live forecastConfirmed by the latest screening, 23 Oct 19:10 UTC.
Closest approach24 Oct 202610:50 UTC
Relative speed4.56 km/sat the closest approach
Altitude943 kmlow Earth orbit
Separation now—live
Track SDA-NG-T1TL-414Track THOR ABLESTAR DEBAll approaches
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US SDA-NG-T1TL-414 and US THOR ABLESTAR DEB are predicted to reach a closest approach of 2.05 km at 2026-10-24 10:50 UTC, at a relative speed of 4.56 km/s. Confirmed by the latest screening, 23 Oct 19:10 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
SDA-NG-T1TL-414Payload
NORAD 100996
CountryUS
Launched2026-10-10
OrbitLEO · 937 × 948 km
COSPAR2026-231P
Maneuver capableUnknown
Profile →Globe →
THOR ABLESTAR DEBDebris
NORAD 414
CountryUS
Launched1961-06-29
OrbitLEO · 940 × 1,004 km
COSPAR1961-015EP
Maneuver capableNo
Uncontrolled debris fragment tracked by the public catalogue. About space debris →
Profile →Globe →

Where This Happens

Altitude context
DEBRIS BELT 700–1000 KM2006001,0001,5002,000 kmTHIS PASS · 943 KMISS 420Starlink 550

At 943 km this pass sits inside the most congested band in low Earth orbit, home to the debris left by the 2007 ASAT test and the 2009 collision. 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 · SDA-NG-T1TL-414 ⟷ THOR ABLESTAR DEB
2026-10-24 10:502.05 km Live forecast4.56 km/s943 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
23 Oct 18:29 UTC2.05 km Forecast24 Oct 10:50 UTC23 Oct 03:21 UTCRe-check
23 Oct 11:14 UTC1.43 km Forecast24 Oct 10:50 UTC23 Oct 00:22 UTCRe-check
23 Oct 10:56 UTC4.10 km Forecast24 Oct 10:50 UTC23 Oct 00:22 UTCScreen

These Objects Elsewhere

Other screened approaches · 7 days
1.55 km10-24 02:27 UTC
SDA-NG-T1TL-414SL-8 R/B
2.29 km10-24 08:39 UTC
SDA-NG-T1TL-414COSMOS 1375 DEB
2.75 km10-24 14:19 UTC
SDA-NG-T1TL-412THOR ABLESTAR DEB

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 — “SDA-NG-T1TL-414 ⟷ THOR ABLESTAR DEB: 2.05 km predicted close approach”, https://orbitalradar.com/conjunction/100996-414 (accessed 2026-10-23).