USEDDA-1 300E and USSTARLINK-33877 are predicted to reach a closest approach of 851 m at 2026-10-22 08:32 UTC, at a relative speed of 14.05 km/s. Confirmed by the latest screening, 22 Oct 07:25 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.
At 472 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 · EDDA-1 300E ⟷ STARLINK-33877
2026-10-22 08:32851 m Live forecast14.05 km/s472 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 Nothing is overwritten: a withdrawn forecast keeps its figure, with the newer check beside it, and the best estimate after the pass is a row of its own.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
22 Oct 02:04 UTC851 m Forecast22 Oct 08:32 UTC21 Oct 14:00 UTCRe-check
21 Oct 19:30 UTC189 m Forecast22 Oct 08:32 UTC21 Oct 13:46 UTCRe-check
21 Oct 13:30 UTC4.48 km Reinstated22 Oct 08:32 UTC21 Oct 10:18 UTCRe-check
21 Oct 09:46 UTC14.02 km Withdrawn22 Oct 08:32 UTC21 Oct 05:13 UTCRe-check
21 Oct 08:52 UTC8.88 km Forecast22 Oct 08:32 UTC20 Oct 22:45 UTCRe-check
21 Oct 08:32 UTC9.01 km Forecast22 Oct 08:32 UTC20 Oct 22:45 UTCScreen
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 — “EDDA-1 300E ⟷ STARLINK-33877: 851 m predicted close approach”, https://orbitalradar.com/conjunction/63933-69017 (accessed 2026-10-22).
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