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BEACON

Object

2021 AC4

2021AC4 · 1/3 sources

Risk scales

TorinoT0
Palermo-9.48

Source: JPL Sentry

JPL window: 2120-2120·Last obs: 2021-01-12

Sources

Amber = past cut. Risk 0 · fields 0.

1/3 sources
FieldJPL CADnot presentJPL SentryNASA/JPLESA NEOCCnot present
Close-approach datethreshold: date———
Miss distanceauthreshold: 3% rel———
Relative velocitykm/sthreshold: 1% rel (ESA 0.1 km/s)———
Risk yearscumulative aggregation window—2120-2120—
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—6.062e-8—
Palermo Scalecumulativethreshold: |Δ| > 0.5—-9.48—
Torino Scalemaxthreshold: exact—T0—
Estimated diameter* from absolute magnitude—6 m—