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BEACON

Object

2021 WU4

2021WU4 · 2/3 sources · cross-match · 1 risk div.

Risk scales

TorinoT0
Palermo-6.78

Source: JPL Sentry

JPL window: 2056-2118·ESA years: 2103-2125·Last obs: 2021-12-03

Sources

Amber = past cut. Risk 1 · fields 1.

2/3 sources · match
FieldJPL CADnot presentJPL SentryNASA/JPLESA NEOCCESA Aegis
Close-approach datethreshold: date———
Miss distanceauthreshold: 3% rel———
Relative velocitykm/sthreshold: 1% rel (ESA 0.1 km/s)———
Risk yearsaggregation windows differ (informational)—2056-21182103-2125
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—8.670e-82.720e-9
Palermo Scalecumulativethreshold: |Δ| > 0.5—-6.78-8.46
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—36 m40 m *

Detected · 1 fields · 1 risk

  • palermoScaleCumulative [risk · |Δ| > 0.5] · jpl-sentry=-6.78 · esa-neocc=-8.46Aggregation windows differ (informational): JPL 2056-2118 vs ESA 2103-2125. Cumulative threshold still applies.