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BEACON

Object

2013 XU21

2013XU21 · 2/3 sources · cross-match

Risk scales

TorinoT0
Palermo-6.90

Source: JPL Sentry

JPL window: 2055-2066·ESA years: 2055-2066·Last obs: 2013-12-14

Sources

Amber = past cut. Risk 0 · fields 0.

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 yearscumulative aggregation window—2055-20662055-2066
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—2.987e-72.640e-7
Palermo Scalecumulativethreshold: |Δ| > 0.5—-6.90-6.94
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—20 m20 m *