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BEACON

Object

2021 AL1

2021AL1 · 2/3 sources · cross-match · 1 risk div.

Risk scales

TorinoT0
Palermo-7.48

Source: JPL Sentry

JPL window: 2105-2111·ESA years: 2077-2077·Last obs: 2021-01-17

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)—2105-21112077-2077
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—6.641e-87.020e-9
Palermo Scalecumulativethreshold: |Δ| > 0.5—-7.48-8.14
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—30 m30 m *

Detected · 1 fields · 1 risk

  • palermoScaleCumulative [risk · |Δ| > 0.5] · jpl-sentry=-7.48 · esa-neocc=-8.14Aggregation windows differ (informational): JPL 2105-2111 vs ESA 2077-2077. Cumulative threshold still applies.